124 THE TANGANYIKA PROBLEM. 
exhausted the fresh-water fauna of Nyassa, at any rate 
so far as a knowledge of the different types composing it 
is concerned. When the fauna of Nyassa is considered 
in comparison with the fauna of the other great lakes of the 
world, it is perhaps chiefly characterised by its limitations. 
For it will be seen from the subjoined lists that it consists 
almost exclusively of fishes and mollusca. The fishes of 
Nyassa include representatives of seven families, and the 
contained genera and species which have hitherto been 
recorded are represented in the following table : — 
ClCHLID/E. 
I. Paratilapia robust a Gthr. 
2. 
9 9 
afra Gthr. 
3 - 
9 9 
modesta Gthr. 
4 - 
5 9 
livingstonii Gthr. 
5 - 
99 
intermedia Gthr. 
6. 
9 9 
dimidiata Gthr. 
7 - 
9 9 
longiceps Gthr. 
8. 
99 
nototaenia Blgr. 
9. Corematodns shiranus Blgr. 
10. Petrochromis nyassa Blgr. 
11. Tilapia shirana Blgr. 
12. 
9 9 
mossambica Ptrs. 
I 3 - 
99 
kirkii Gthr. 
14. 
9 9 
squamipinnis Gthr. 
! 5 - 
99 
rendalli Blgr. 
16. 
9 9 
lateristriga Gthr. 
i 7 - 
9 9 
subocularis Gthr. 
18. 
99 
johnstoni Gthr. 
19 - 
99 
lethrinus Gthr. 
20. 
9 9 
tetrastigma Gthr. 
21. 
99 
callipterus Gthr. 
22. 
99 
williamsi Gthr. 
23 - 
,, 
ait’-ata Blgr. 
24. Docimodus johnstoni Blgr. 
25. Cyrtocara moorii Blgr. 
26. Hemitilapia oxyrhynchus Blgr. 
Mastacembelid.e. 
27. Mastacembelus shiranus Gthr. 
SlLURIDiE. 
28. Bagrus meridionalis Gthr. 
29. Anoplopterus platyehir Gthr. 
30. Synodontis zambesensis Gthr. 
CyPRINIDj®. 
31. Labeo tnesops Gthr. 
32. Barbus trimaculatus I’trs. 
33. Bari litis guentheri Blgr. 
34. Engraulicypris pit ignis Gthr. 
i 35. Pelotrophtis microlepis Gthr. 
j 36. ,, microcepkalus Gthr. 
CHARACINID/E. 
j 37. Alestes iniberi Ptrs. 
Cypri nodgnti i>.k. 
38. Haplochilus johnstoni Gthr. 
Mormyrid.e. 
39. Monnyrus discorhynchus Ptrs. 
40. ,, catostoma Gthr. 
41. Monnyrops zambanenje Ptrs. 
Curiously enough, beyond copepods, eye lops and other 
minute forms, there are no Crustacea in Nyassa besides 
