213 



verse wrinkling of the larva still remained; the second segment 

 behind the head showed a very considerable swelling upon the sides, 

 not extending upon any other segment, which was the rudiments of 

 future wings. The ventral surface of the two segments behind the 

 legs was much sunken, and the pellicle thin, soft, and colorless, quite 

 in contrast with the adjacent more hardened pellicle — evidently to 

 give space for the anticipated intrusion of the wings, feet, and antennae 

 of the pupa ; but one continuous pellicle seemed to cover the Avhole 

 animal, in one part wholly pupal, in another larval, while in others it 

 retained in part the characters of each, which would seem to imply 

 that the change had been going on by a simultaneous process of ab- 

 sorption and building up of the particles of the same skin. 



Prof. J. P. Cooke gave an account of a new spectroscope 

 recently made for him by Mr. Alvan Clark, of Cambridge. 



The Secretary read the following letters received since the 

 last announcement, viz. : — 



From the President of the University of Vermont, March 5th, 1863 ; 

 the Superintendent of the Geological Survey of India, Calcutta, April 

 10th, 1862, acknowledging the receipt of the Society's jjubhcations ; 

 the same, April 5th and 10th, and July 15th, 1862, pi^esenting publi- 

 cations of the Survey. 



Mr. G. H. Emerson, of Cambridge, was elected a Resident 

 Member. 



DONATIONS TO THE MUSEUM. 



January 7. A collection of MoUusca, from Beaufort, N. C, by Dr. S. Knee- 

 land. Nest of a Carpenter Bee, Xylocopa, -with its living inhabitants, 3c?, 1? 

 imagos, and a Fungus from the Rappahannock River, Va., by Lieut. Col. 

 Underwood. Helix suppressa, from Baltimore, by Mr. W. C. Cleveland. 



January 21. Jaws of a Shark, from Rockport, Mass., by Mr. Addison Gott. 

 Galena from Warwarsing, Ulster County, N. Y., by Mr. H. Kelly. Beluga, or 

 White Whale, which died at the Aquarial Gardens, by Mr. P. T. Barnum. 



February 4. Specimens of wool of Alpaca, Llama, and Vicuna, by Mr. 

 Samuel WeUs, Jr. 



February 18. Three specimens of Lagopus alius, and one of Cyanurus 

 cristatus, from Quebec, C. E. ; specimens of copper pyrites, talcose slate con- 

 taining copper, and variegated copper ore, from Leeds, C. E., by Dr. C. T. 

 Jackson. 



March 4. Tracing of a part of two townships, twenty miles west of Mar- 

 quette, on Lake Superior, at the headwaters of the Carp and Escanaubia 

 Rivers, exhibiting the location of every beaver dam in the section represented, 

 the largest being 457 feet in length, by Mr. J. S. Fay. Specimens of Cyatho- 

 phyllum, from Glen Haven, N. Y., by Mr. N. R. Wadleigh. Specimens of dif- 



