352 Contributions to the 



On page 344, the form spoken of as " Biddidphia radia- 

 tus " should read " Eupodiscns radiatusP The statement 

 that my fatlier corrected Biddidphia radiatus was caused 

 by the name being misprinted in the edition of Smith 

 wliich I used. He corrected " Eupodiscns radiatus, Bail.," 

 saying that it was not his species, "or else very badly fig- 

 ured." Mr. Stodder is inclined to think that the species 

 here figured is a new one, and that the name B. hemitropa 

 should be retained. The form approaches so closely to 

 one figured by Mr. Roper, (Mic. Journ., Vol. VII., Plate 

 2d) as to leave considerable doubt in regard to their sepa- 

 ration, but in no instance, in the forms from the Para, have 

 I seen any trace of spines, as represented by Roper and 

 Smith. 



On page 339, the form referred to as Dicladia Capreolus 

 should be numbered 73 instead of 74. 



Art. VI. — Contributions to the Comparative Myology of 

 the Chimpanzee. By Burt G. Wilder. 



[Presented to the Society, April 17th, 1861.] 



Through the kindness of Prof. Jeffries Wyman, I was en- 

 abled last winter to dissect one side of a young male Chim- 

 panzee, Troglodytes niger, about two feet in height ; as it 

 had been kept in alcohol for two or three years, it could be 

 examined more at leisure than a fresh specimen. The dis- 

 section was very carefully made, and with special reference 

 to the differences in the muscular system from that of 

 man. Believing the mere facts in Anatomy or any sci- 

 ence to be in themselves worthless till so grouped and 

 studied as to exhibit the uses or functions which they 

 represent, I have constantly endeavored to detect the 

 meaning of the differences in size, number, and arrange- 



AUGU8T, 1861. 



