97 



July 14, 1835. 

 Williain Yarrell, Esq., in the Chair. 



Mr. Ogilby exhibited several rare and undescribed species of 

 Mammalia and Birds, brought from the Gambia, on which he made 

 the following observations : 



" Through the kindness of Mr. Rendall, who has lately arrived 

 from the Gambia, where bis brother is lieutenant-govemor of Fort 

 St. Mary and the other British possessions in that neiglibourhood, I 

 am enabled to present the Society with the following account of a 

 few new or rare species of Mammals and Birds ; forming, hoAvever, 

 but a very small portion of the valuable coUection which Mr. Ren- 

 dall has brought home ■vvith hira. The coUection, it is true, contains 

 very few Mammals ; these, however, are either altogether new to 

 science or of very rare occurrence, and show how little we know of 

 the zoology of the west coast of Africa. 



Genus Colobus, III. 



Colobus fuliginosus. This new and interesting species of a very 

 obscure and imperfectly kno\vn genus, measures 2 feet 5 inches from 

 the upper lip to the extremity of the tail, which organ is itself 2 feet 

 8 inches long. Ali the upper parts of the body are of a light smoky 

 blue colour, very similar to that of the common Mangabey, (Cercopi- 

 thecus fuliginosus, GeofF.), rather darker on the shoiilders than else- 

 where, and copiously tinged ^vith red on the occiput : the colour of the 

 back descends some way down on the external face of the fore anns and 

 thighs, and also a short distance, but more obscurely, on the upper 

 surface of the tail. With these exceptions, all the ręst of the extre- 

 mities, the arms, fore arms, thighs, legs, hands, feet and tail, are of 

 a uniforra light or brick red, and a more intense shade of the šame 

 colour extend3 up the fore ' part of the shoulders, and spreads over 

 the breast, throat and whiskers, which latter are long, directed down- 

 wards on the cheeks, and backwards into long pointed tufts behind 

 the ears, ^hich are small, round, naked, and fumished vi^ith a di- 

 stinct heUx, in all respects Jilce that of the human subject. The belly 

 and flanks are of a dirty yellowish white, and a circle of black stiff 

 hair passes over the eyes. The face, paims of the hands and soles of 

 the feet are naked and of a violet colour ; the callosities are of mo- 

 derate size ; the thumbs of the anterior extremities are wanting, but 

 their situation is marked by a small nailless tubercle ; the middle and 

 ring fingers, both on the fore and hind hands, are of equal length, as 

 are likewise the index and little fingers ; and it is to be observed. 



No. XXXI. Proceedings of the Zoologic^l Society. 



