Upon the head the yellow colour is most prevalent. The under fur 

 is thick and of a pale browii colour. The hair is about the šame 

 length or rather shorter than in the domestic cat, and much harsher 

 to the touch. The hind feet are black beneath from the heel to the 

 toes, and there is a streak of black about an inch and a half in 

 length, passing upwards from the front paw on the outer side. The 

 hair of the taU is long and bushy ; the legs thick and moderately 

 long; the general form is sleuder; the head small in proportion to 

 the body, and considerably arched above. The region of the ante- 

 rior angle of the eye is black, with a yellomsh -vvhite spot immedi- 

 ately above it. The eyes are very small; the ears short, broad, and 

 obtiisely pointed, thickly covered with hair, which on the outside is 

 of a simUar colour to that on the top of the head, excepting at the 

 tip, where it is margined with black. Inside the ears the hair is of 

 a paler hue. The under parts of the body are of the šame general 

 hue as the sides. The tail is of the šame general colour as the body, 

 but the hairs become gradually less annulated towards the tip, their 

 basai portions being brown and the apices black ; the under side is 

 of a somewhat paler hue than the upper. The lips and nose are 

 black. 



Mr. Martin remarked, that there was some reason for supposing two 

 species were confounded under the šame name, for he was aware of 

 the existence of a cat ■with a shorter tail, agreeing very closely with 

 Azara's description of the Yagourondi. Without, however, being in 

 possession of more ample materials he did not likę to characterize 

 the present specimen as a new species, but in the event of its ulti- 

 mately being considered distinct, he proposed that it should be called 

 Felis Darivinii. 



Mr. James Reid read some notes on several ąuadrupeds, also from 

 the collection of Mr. Dar^'in, including a new species of Opossum, 

 ■vvhich he characterized as Didelphis hortensis*. He also noticed a 

 very young specimen of the Viscache, Lagostomus trichodactylus of 

 Brooks. This example, not much larger than our common Rat, dif- 

 fers from the adult in ^-anting the ridge of stifF black hairs over the 

 eyes so conspicuous in old specimens, and in wauting also the 

 grooves on the teeth. 



Mr. Gould exhibited from Mr. Darwin's collection of Birds, a 

 series of Grovnd Finches, so peculiar in foim that he was induced to 

 regard them as constituting an entirely new group, containing 14 

 species, and appearing to be strictly confined to the Galapagos 

 Islands. Mr. Gould believed the whole of these Birds to be un- 

 described, and remarked that their principai peculiarity consisted in 

 the bill presenting several distinct modifications of form, while the 

 general contour of the species closely assimilated. He proposed to 

 characterize them under the separate generic appellations of Geo- 

 spiza, Camarhynchus, Cactortiis, and Certkidea. 



* The characters of species newly described which have not yet beea 

 fumished by the respective authors, andare the refore necessarily omitted, 

 ■will be inserted, if subsequently sent in, at the termination of the volurae. 



