On the Angwantibo of Old Calabar. 177 



tions of the body and limbs, which I shall afterwards notice 

 in describing this specimen ; and while at present unable 

 to procure various works for reference, or a specimen of the 

 Potto itself for examination, and therefore in want of more 

 information on the subject. I am inclined to consider this 

 specimen of the Angwantibo as being a mature individual, 

 and probably forming another species of the same genus, and 

 one that, so far as I am aware, has not before been described, 

 I therefore, from the locality where it was found, give it pro- 

 visionally the name of the Stenops, or Perodicticus Cala- 

 bar ensis. 



The Potto, or Perodicticus (2eo/ro?/z,isfoundat Sierra Leone, 

 a region of the African coast, at some distance from Old Calabar. 

 It is also known by a different name, being the Aposo or Aposou 

 of the Gold Coast. The letters of the missionaries (from which 

 extracts were given at the commencement of this communica- 

 tion) seem to indicate the possible existence of more than one 

 species, probably of allied animals — the Divan of the Krumen, 

 and this, the smaller Angwantibo of the natives of Old Cala- 

 bar. Whether the Divan and the Aposou are the same, or 

 different species, I am unable to determine : they probably 

 bear a considerable resemblance to one another. From the 

 great variety in size, however, of the animals referred to in 

 these letters, I am at present inclined to believe there 

 may probably be two, if not three, distinct species, — the 

 Aposou, the Dwan, and the Angwantibo, — the Dwan being 

 perhaps the largest in size. 



Description of the Angwantibo (from specimen in spirits:)— 

 Perodicticus Calabarensis (Mihi) — above, yellowish-brown ; 

 the roots of hair dark gray ; below, paler, in some parts 

 nearly white; hair wool-like; length from muzzle to point 

 of tail, 10J inches ; tail very short, (about ^th of an inch in 

 length). 



Proximal phalanges of both hands and feet (not including 

 the pollex) united together by the integuments ; the two distal 

 phalanges being free.* 



* A hand of the Potto, figured in "Cuvier's Animal Kingdom^-— London, 



