170 



PSrCHE. 



[May 1SS4. 



PSYCHE. 



CAMBRIDGE, MASS., MAY 1S84. 



Communications^ exchnnges and editors^ copies 

 should he addressed to Editors of Psyche, Cam, 

 bridi^Cy Mass. Communications for pnblication in 

 Psyche must he property authenticated , and no anony- 

 mous articles -will he published. 



Editors and contributors are only responsible for the 

 statements made in their o-jjn communications. 



Works on subjects not related to entomology ivill not 

 be reviewed in Psyche. 



For rates of subscription and of advertising, see ad- 

 vertising columns. 



PROCEEDINGS OF SOCIETIES. 



CAMBRIDGE ENTOMOLOGICAL -CLUB. 



{Continued from p. tbo.) 



Mr. G. Dimmo(|l; showed the two halves of 

 a split wing of Attacus recropia, in which 

 the two layers of -the wing had been sep- 

 arated by the following mode. The wing 

 from a specimen that had never been dried is 

 put first into seventy per cent, alcohol, then 

 into absolute alcohol, and from the latter, 

 after a few days' immersion, into turpentine. 

 After remaining a day or two in turpentine, 

 the specimen is plunged suddenly into hot 

 water, when the conversion of the turpentine 

 into vapor between the two layers of the 

 wings so far separates the.se layers that they 

 can be easily parted and mounted in the 

 usual way as microscopical preparations on a 

 slide. This is an easy way of demonstrating 

 the sac-like nature of the wings of insects. 



Dr. II. A. Hagen showed preparations to 

 illustrate organs, of undetermined function, 

 found on the larvic o(ffom/>/ii<l<tr, lihv.tliiliilnc. 

 ncsc/iniddc, but not as yet found on agriouidiie, 

 which he believes to be traces of segmental 

 organs. The organs in question are little 

 cavities or invaginations of the epidermis be- 

 tween the seginents. one on each side of the 

 median ventral line, on one, two. or three 



abdominal segments according to the family 

 to which the larva belongs. Dr. Hagen gave 

 a brief notice of these organs in the Zoolog- 

 ischcr anzeiger, 5 April 1S80, jahrg. 3, p. 

 161. 



Mr. G. Dimmock showed a number of mi- 

 croscopical preparations to illustrate different 

 points of insect anatomy. 



II Jax. 18S4. — The gSth meeting, the tenth 

 annual meeting, and the seventh since the in- 

 corporation of the Club, was held at the Secre- 

 tary's house, 54 Sacratiiento St., Cambridge. 

 II Jan. 1SS4. This meeting terminated the 

 first decennial of the Club's existence, the first 

 meeting having been heldgjan. 1S74. In tin- 

 absence of the President. Mr. C. C. Eaton was 

 chosen Chairman. Si.\ persons were pres- 

 ent. 



The Secretary announced the withdrawal 

 from the Club of Mr. Edward Burgess, of 

 Boston, Mass. 



The following persons were elected to ac- 

 tive membership : Charles C. Beale, of Faulk- 

 ner, Mass.; Willard Loomis Devereaux, of 

 Clyde, N. Y. ; Thaddeus William Harris 

 (grandson of the well-known entomological 

 author who bore the same name), of Cam- 

 bridge, Mass.; and John George Jack, of 

 Chateauguay Basin, P. C^, Canada. 



The following officers were elected for the 

 ensuing year: President, Samuel Hubbard 

 Scudder ; Secretary, George Dimmock ; Treas- 

 urer, Benjamin Pickman Mann; Librarian. 

 ClifTord Chase Eaton ; members at large of 

 the Executive Committee, Roland llayward 

 and Thaddeus William Harris. B. P. Mann 

 waselected managingeditorand G. Dimmock 

 associate editor of Psyche for the ensuini; 

 year. 



The annual reports of the Secretary, of the 

 Treasurer, and of the Librarian were read and 

 approved. [See further on.] 



The address of the Retiring President, Mr. 

 B. P. Mann, upon "The bibliography of en- 

 tomology" was read by the Secretary. [This 

 address is printed in full in Psyche, April 

 1SS4, V. 4. p. 1 55-! 59-] 



