Comtes - Hindawi
2
186 t)S YCItE. PSYCHE. CAMBRIDGE, MASS., MARCH 1881. Communications, exchanges and editors’ co2ies should be addressed to :E)I’rORS OF PSYCHE, Cam. bridge, 2[ass. Communications for publication in PSYCH. must be jroterly authenticated, and anony. mous articles will be published. F.ditors and contributors only responsible for the statements made in their own communications. Works subjects not related to entomology will not be reviewed in PsYcn. tZor rates of subscription and of advertising, advertising columns. PROCEEDINGS OF SOCIETIES. CAMBRIDGE E:NTOMOLOGICAL CLUB. 10 DEC. I88O.--72nd meeting. Mr. S: H. Scudder called attention to a recent paper by Dr. F. Eugen Geinitz ("Die Blattineen aus der Dyas von Weissig") being a new and extensive description of a very complete fos- sil cockroach. Especial attention was called to the want of symmetry in the venation of the wings. Mr. Scudder then exhibited a drawing of a new (undescribed) cockroach recently found at Mazon Creek, Ill., which was even more complete than the one studied by Geinitz. This specimen also shows con- spicuous difference in the venation of the wings of both pairs. Mr. Scudder also called attention to another paper by Dr. Geinitz, which was, he said, the first considerable paper that had hitherto appeared, so far as he knew, on fossil insects of the Lyas of Germany Dr. E: L. Mark gave a synopsis of the results already arrived at by Dr. Manson (of Amoy), Lewis (of Calcutta), and others concerning the history of the parasite of the human blood known as teilaria sangu[s-orainis, and the probability of a certain mosquito (Culex) being the intermediary host which harbors the worm in certain stages of its develop- ment. The figures accompanying the papers by Drs. Manson and Lewis were exhibited. Mr. W: Trelease referred to Mr. H: C. McCook’s report printed on p. I83 of Prof. Comstock’s Report upon Cotton Insects." Mr. Trelease could not quite agree with Mr. McCook in attributing so insignificant an importance to the ants. He (Trelease) had repeatedly lost in a single night the contents of boxes holding a dozen or more larvae of 4letia from the invasion of the ants in ques- tion. Mr. T. is now quite sure that the moths (Aleta) seek the extra-floral glands on the peduncle of the sweet potato plant [joraoea batalas] for food. He did n’ot state the fact in his report to Prof. Comstock be- cause at that time he was not quite sure that such was the case. HOMOLOGIES O TI-IE CREMASTER. In the Comtes Rendus for 16 Aug. I88O, Ktinckel homologizes the whole cremaster of the butterfly chrysalis with the anal prolegs of the caterpillar; the cremaster is formed, he says, by the soldering of a pair of appen- dages, bearing at tip, each independently of the other, a series of hooks; and these two parts can be seen, in a changing chrysalis, to be hidden under the skin of the anal legs of the caterpillar. Riley however has clearly shown (Amer. eztom., July I88O, v. 3, P. I62- I67) that the body of the cremaster of the chrysalis corresponds to the anal plate (or tewninal segmert) of the caterpillar, and that the anal prolegs of the latter are trans- formed to what he terms the sustentors, rid- ges on the under surface of the cremaster which terminate anteriorly in little knobs, and play such an important part in the pupa- tion of nymphalidous butterflies. Kiinckel has evidently been led astray in part by the mere resemblance between the hooks of the pupa cremaster and those of the larval prolegs; and what becomes of the anal plate of the caterpillar he fails to tell us. Both these au- thors have written independently. S: H. S.
Transcript of Comtes - Hindawi
186 t)SYCItE.
PSYCHE.
CAMBRIDGE, MASS., MARCH 1881.
Communications, exchanges and editors’ co2iesshould be addressed to :E)I’rORS OF PSYCHE, Cam.
bridge, 2[ass. Communications for publication in
PSYCH. must be jroterly authenticated, and anony.mous articles will be published.
F.ditors and contributors only responsible forthe statements made in their own communications.
Works subjects not related to entomology will not
be reviewed in PsYcn.
tZor rates of subscription and of advertising,advertising columns.
PROCEEDINGS OF SOCIETIES.
CAMBRIDGE E:NTOMOLOGICAL CLUB.
10 DEC. I88O.--72nd meeting. Mr. S: H.Scudder called attention to a recent paper byDr. F. Eugen Geinitz ("Die Blattineen ausder Dyas von Weissig") being a new andextensive description of a very complete fos-sil cockroach. Especial attention was calledto the want of symmetry in the venation ofthe wings. Mr. Scudder then exhibited adrawing of a new (undescribed) cockroachrecently found at Mazon Creek, Ill., whichwas even more complete than the one studiedby Geinitz. This specimen also shows con-spicuous difference in the venation of thewings of both pairs.Mr. Scudder also called attention to another
paper by Dr. Geinitz, which was, he said,the first considerable paper that had hithertoappeared, so far as he knew, on fossil insectsof the Lyas of Germany Dr. E: L.Mark gave a synopsis of the results alreadyarrived at by Dr. Manson (of Amoy), Lewis(of Calcutta), and others concerning thehistory of the parasite of the human bloodknown as teilaria sangu[s-orainis, and theprobability of a certain mosquito (Culex)
being the intermediary host which harborsthe worm in certain stages of its develop-ment. The figures accompanying the papersby Drs. Manson and Lewis were exhibited.Mr. W: Trelease referred to Mr. H: C.McCook’s report printed on p. I83 of Prof.Comstock’s Report upon Cotton Insects."Mr. Trelease could not quite agree with Mr.McCook in attributing so insignificant an
importance to the ants. He (Trelease) hadrepeatedly lost in a single night the contentsof boxes holding a dozen or more larvae of4letia from the invasion of the ants in ques-tion. Mr. T. is now quite sure that themoths (Aleta) seek the extra-floral glandson the peduncle of the sweet potato plant[joraoea batalas] for food. He did n’ot statethe fact in his report to Prof. Comstock be-cause at that time he was not quite sure thatsuch was the case.
HOMOLOGIES O TI-IE CREMASTER.
In the Comtes Rendus for 16 Aug. I88O,Ktinckel homologizes the whole cremaster ofthe butterfly chrysalis with the anal prolegsof the caterpillar; the cremaster is formed,he says, by the soldering of a pair of appen-dages, bearing at tip, each independently ofthe other, a series of hooks; and these twoparts can be seen, in a changing chrysalis,to be hidden under the skin of the anal legsof the caterpillar. Riley however has clearlyshown (Amer. eztom., July I88O, v. 3, P. I62-I67) that the body of the cremaster of thechrysalis corresponds to the anal plate (ortewninal segmert) of the caterpillar, andthat the anal prolegs of the latter are trans-formed to what he terms the sustentors, rid-ges on the under surface of the cremasterwhich terminate anteriorly in little knobs,and play such an important part in the pupa-tion of nymphalidous butterflies. Kiinckel hasevidently been led astray in part by the mereresemblance between the hooks of the pupacremaster and those of the larval prolegs;and what becomes of the anal plate of thecaterpillar he fails to tell us. Both these au-thors have written independently. S: H. S.
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