On new Fishes from Lake Tanganyika. 363 
Skull: greatest length 33°5 ; condylo-incisive length 31°6 ; 
wygomatic breadth 16°4; nasals 13:2; interorbital breadth 
4:5; palatal foramina 7:1 x 2:1; 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, R.A.M.C. Two specimens. 
Mylomys cuninghamei of British East Africa and M, lutes- 
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 
length. 
._ XLV.—Descriptions of new Fishes from Lake Tanganyika 
forming Part of the Collection made by the late Dr. L. 
Stappers for the Belgian Government. By G. A. BouLencER, 
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 +. 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 34 to 32 times in total length, length of 
head 4 to 44 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 
young zoologist is a great loss to Science. 
+ Rev. 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, onl r 
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