[ 537 ] 



VI. Fourth Contribution to the Ichthyology of Lake Tanganyika^.— Report on the 

 Collection of Fishes made hy Br. W. A. Cunnington during the Third Tanganyika 

 Expedition, 1904-1905. By G. A. Boulenger, F.E.S., V.P.Z.S. 



Eeceiyed February 6, read March 6, 1906. 



[Plates XXX.-XLI.] 



IHE last expedition organised out of the funds remaining in the hands of the 

 Tanganyika Exploration Committee was entrusted to Dr. W. A. Cunnington, 

 who left London in March 1904, and returned home in June 1905. The total 

 length of time spent on and around Tanganyika was about 8 months, and collections 

 were made at a great number of localities, marked on the sketch-map on the 

 next page, some of which appear here under a spelling somewhat diiferent from 

 that adopted by Mr. Moore and followed in the previous reports dealing with 

 his results. 



Speaking of the fishes alone, I may say that Dr. Cunnington has been highly 

 successful in his efforts, and has fully justified the expectations entertained by the 

 Committee who entrusted him with the mission of forming as complete a collection 

 as possible of the animals and plants inhabiting the great lake. The series brought 

 home by him is larger than any of those from that lake with which it has hitherto 

 been my privilege to deal. The preservation of the specimens is excellent and 

 their value is enhanced by a careful labelling of every one of them, in most cases 

 accompanied by either sketches or notes concerning the life-coloration, on which 

 I have largely drawn in preparing the present account. I have in every case 

 reproduced the native names (mostly of the Ujiji fishermen) consigned in these 

 notes, although in many cases such names appear to be applied regardless of the real 

 specific characters. 



Dr. Cunnington has also been so fortunate as to considerably extend the list of 

 Cichlid fishes in which the parents protect their offspring by giving them shelter 

 in the mouth and pharynx. This mode of nursing is illustrated, in the present 

 collection, by examples of seven species, viz. : — Paratilapia pfefferi, Pelmatochromis 

 polylepis, Pelmatochromis pleurospilus, Enantiopus longianalis, Simochromis diagramma, 

 Tilapia dardennii, and Eretmodus cyanostictus. Mr. Moore had previously made us 



' For the third contribution, cf. Tr. Z. S. xvi. 1901, p. 137. 



VOL, XVII. — PART VI. No. 1. — Octoher, 1906. 4 c 



