On new Fishes from Lake Tanganyika. 363 



Skull: greatest length 33-5 ; condylo-incisive length 31*6; 

 zygomatic breadtli IG'4; nasals 13 2; interorbital breadth 

 4"5 ; palatal foramina 7"lx2'l; upper molar series 7*3; 

 breadth of m^ 2*5. 



Hab. Mt. Baginzi, Bahr-el-Ghazal. Alt. 3500'. 



Type. Adult female. B.M. no. 17.10.4.17. Original 

 number 29. Collected March 1916, and presented by Major 

 Cuthbert Christy, U.A.M.C. Two specimens, 



Mijlomys cuninghamei of British East Africa and M. liites- 

 cens of Uganda have the belly hairs broadly plumbeous 

 basally. M. alberti of the Upper Welle is conspicuously 

 larger than M. christyi, the skull 38-5 mm. in length. 

 " Pelomys '■* roosevelti, Heller, which is clearly a Mylomys, 

 I do not know, but its molars are said to be 8*5 mm. in 

 lenji-th. 



XLY. — Descriptions of new Fishes from Lake Tanganyika 

 forming Part of the Collection made by the late Dr. L. 

 Stappersfor the Belgian Government. By G. A. Boulengee, 

 F.R.S. 



(Published by permission of the Trustees of the British Museum.) 



A REPORT on the large collection of Fishes made by Dr. L. 

 Stappers * in Lake Tanganyika and other parts of the 

 Belgian Congo was in preparation when the war broke out, 

 and only the greater part of the diagnoses of the new species 

 have so far been published in Brussels f. I now propose, 

 after this long delay, to give short descriptions of the 

 remainder, so as to render the whole series available for 

 reference. 



Alestes vittatus. 



Depth of body 3^ to 3f times in total length, length of 

 head 4 to 4^ times. Head twice as long as broad, a little 

 longer than deep ; snout as long as eye, which is 3 times in 



* On his return to Europe, hastened by the outbreak of the war, 

 Dr. Stappers joined the Medical Service of the Belgian Army ; he died 

 in hospital at Calais on Dec. 30, 1916. The death of this promising 

 youDf^ zoologist is a great loss to Science. 



t liev. Zool. Afr. iii. 1914, pp. 442-447, and iv. 1915, pp. 162-170. 

 The Acanthopterygii and Opisthomi are included in the British Museum 

 Catalogue of African Fishes. 



24* 



