298 PROCEEDINGS OP METROPOLITAN SOCIETIES. 



ened bill of the latter, with an analogous (but less denned) green 

 patch on the sides of the head. The specimen exhibited had also a 

 few obscure Teal-like spots upon the breast. It appeared to be a 

 young bird of the preceding year. The tracheal labyrinth was much 

 smaller than in its European analogue. Mr. Gould remarked the 

 interest attached to the circumstance of American birds straying 

 across the Atlantic, and afterwards described a few new species of 

 birds from South America. He then produced two large skins of 

 the Bornean Ourang-outang, one that of a nearly full-grown male, 

 the exhibition of which excited very considerable interest ; and Pro- 

 fessor Owen remarked that the extraordinary dimensions (seven feet 

 high) ascribed by Dr. Abel to an adult animal of this . species, must 

 indicate that the measurement had been taken not from head to foot, 

 but from the extremity of the fingers to that of the toes, in which 

 case, from the great length of the arms, it was probably accurate. 



April 24th. — Mr. Waterhouse exhibited the skins of two Mam- 

 malia from India : the first a species of Mangouste, nearly allied to 

 the Herpestes brachyurus, (Gray), from the same locality, but larger 

 and of darker colour, with the tail longer, for which he proposed the 

 name of H. fuscus ; the other a small Gerbilla, which he charac- 

 terized under the designation Cuvierii. A long paper from Mr. 

 Martin was read next, on the anatomy of the Spotted Cavy, of which 

 illustrative preparations and drawings were placed on the table. The 

 affinities of this animal with the Coypu and other genera of Rodentia 

 were indicated, as deducible from its internal structure. 



May 9th. — A large collection of quadruped skins, from the inte- 

 rior of Fernando Po, was laid before the meeting, which had recently 

 been presented to the Society by G. Knapp, Esq. Among them, 

 were no less than seven undescribed species, which Mr. Waterhouse 

 characterized as fully as their mutilated condition would permit of. 

 Of the genus Colobus, a remarkable group of African Monkies, des- 

 titute of a thumb to the fore-hands, were examples of two ; one of 

 them a large animal, with uniformly black and very long hair, to 

 which the name of C. satanas was applied ; the second was named 

 after Pennant, and differed from the " Bay Monkey" of that author's 

 History of Quadrupeds in having the cheeks and throat white, the 

 back rusty-black, the sides of the body bright rust colour, and the 

 under parts dirty yellow. There were likewise two Monkies referable 

 to the genus Cercopiihecus. For the first Mr. Waterhouse proposed 

 the name of C. martini ; this species very nearly resembles the C. 

 nic titans, but differs in being of a somewhat paler colour, and in hav- 



