Classijlcalion of the Family ('iclilida;. 'i'S 



rather more nchraceous tlian back. Eyes surrounded by well- 

 marked white rinrrs. Chin and interraniia prominently 

 white. Ears of medium length, the proectote not or scarcely 

 blackened at the edge terminally, extreme edges white ; 

 nietentote whitish. Nuchal patch large, projectod backwards 

 mesially, prominently contrasted deep rich hazel. Hands and 

 feet white above, with an inconspicuous edging of ciiuiamon 

 externally. Tail apparently like back above, whitish below, 

 but a good example is not present on any one of these skins. 



Skull not unlike that of S. mnrgarUce, with similarly 

 broadened postorbital processes, narrow palatal bridge, with 

 tendency to a posterior median spine; palatal foramina 

 broadened mesially and ending behind opposite the middle of 

 the anterior premolar. BulUe rather large for the group. 



Dimensions of the type (measured on skin) : — 



Head and body (approximate) 420 mm. ; hind foot 77 ; 

 ear 53. 



Skull: greatest length 76; condylo-incisive lengtli 67; 

 zygomatic breadth 34- ; nasals (oblique) 31 ; interorbital 

 breadth 18; front of incisor to back of m^ 38 ; palatal fora- 

 miiuT, length 20, breadth at middle 6*2, behind 4'5 ; 

 j)alatal bridge 6*5; cheek-tooth series (alveoli) 14*7. 



Ilab. Purificacion, Magdalena Valley, S.W. of Bogota. 



'J'ype. Adult female. B.M. no. 19. 10. 15. 3. Received 

 in exchange from Frere Apollinaris Maria. Three specimens. 



This cotton-tail is one of a considerable number of species 

 known from Colombia and Venezuela which are all rather 

 closely allied, but it differs from all by its conspicuously paler 

 coloration. Superficially it most resembles S. 7nargaritce, but 

 is, of course, geographically distant from that animal. 



The three specimens are all absolutely alike. 



III. — T/ie Classijication of the Fishes of (he Famili/ 

 Cichlidfe. — I. T/<e Tanganyika Genera. By C Tate 

 Kegan, M.A., F.R.S. 



(PuLlished by permissiou of the Trustees of the British Museum.) 



In his ' Catalogue of African Freshwater Fishes ' (iii. |). 131, 

 1915) Boulengcr has written of the Cichlidiv : " The classifica- 

 tion of the very numerous African members of this family 

 presents the greatest difficulties, and the division into genera, 

 as here followed, is unsatisfactory and open to criticism, the 

 Ann. <& Mo<). X. Hist. Ser. U. Vol. v. 3 



