38 



fatal hjEmoirhage ensued from cutting away the displaced parts : 

 he fuUy agreed in the propriety of removing them by ligature. 



Mr. Bennett called the attention of the Committee to one of the 

 Spider-Monheya, {Jteles, Geoft".,) at present livjng in the Society's 

 Garden, which he regarded as a new species. He named and cha- 

 racterized it as the 



Ateles frontalis. At. ater, maculdjrontali semilunari albd. 

 Statura At. atri, F. Cuv. 



By the white patch on the forehead and the radiation of the hair 

 from the back ot the neck, thismonkey approaches \.he At.hybridus, 

 described in the 'Dictionnaire Classique d'Histoire Naturelle,' by 

 M. Isidore GeofFioySaint Hilaire. In the latter, houever, the co- 

 lours of the body are varied and generally light, the dar kęst tint 

 %vhich is mentioned as occurring on the specimen described being 

 the pure brown of the hcad and anterior limbs. In the Society's 

 individual, on the contrary, the whole of the Iiairs, with the excep- 

 tion of the frontai pateli, are jet black: the naked parts of the skin 

 are also black, except a flesh-coloured space on the face inciuding 

 the eyes, nose, and lips. It has been suspected that as the lighter- 

 coloured species of ///e/es advance in age they arquire the black 

 which is so generally prevalent in the group; but this change of 

 colour yet remains to be proved. 



Some notes by INIr. Yarrell of an eiiatnination of ihe body of tlie 

 lesser American Flying-Sguirrel, (^Pteromys volucella, Cuv.,) were 

 read, The individual examined liad lived in the Society's Collec- 

 tion for up\vards of a year. 



The pectoral museles, and also the museles of all the limbs were 

 well marked and of large size ; the clavicles perfect ; and the general 

 character of the bones similar to that of the Sguirrels. The heart 

 was comparatively large, and the lungs nerefomied of two unequally 

 sized lobes on each side, bearing evident niarks of inflammation ; 

 the chest \vas capacious, the diaphragm being situated very low 

 down, and dividing the body into tvvo nearly equal cavities. The 

 liver was composed of six lobes, varying in size, deeply divided, 

 and placed three on each side ; the gall-bladder was small, elon- 

 gated, and collapsed. The stomach in form and position rescmbled 

 that of the Sguinel ; it was triangular, the «y?fxforming the pyloric 

 portion; the breadth lxVtii of an inch, and I inch in depth. The 

 length of the small intestines was 19į- inches ; the ccccnm 1 inch; 

 the colon and rectum 7 inches; the ccecum also resembled that of our 

 Squirrel in form, but the membrane connecting its inner surface 

 being raore free, the ccscum was less curved upon itself. The kid- 

 neys measured each -r^o^ths of an inch in length by iV'hs in breadth ; 

 they were inflamed ; and both ureters \vere also diseased and en- 

 larged. The subject was a female, and the uterine cornua measured 

 each 1 inch in length. The whole length of the intestinal canal was 

 28 inches J the length of the animal from the nose to the origin of 

 the tail 4i inches. 



