igoS.J 



Records of the Indian Museum. 



257 



but the}^ agree with the t^^pical nilotica from Egypt 

 b}^ the large size of their eggs. 



(c) The specimens collected in the river Umgeni, Natal, were 

 wrongly referred b}^ Prof. Weber to Car. wyckii, 

 Hicks. ; the}^ ought to be considered as a distinct 

 variet}^ natalensis nov. 



{d) The specimens obtained from Port Canning and from 

 Dhappa, lyOwer Bengal, though closely related to the 

 var. gracilipes from Celebes, are, at least for the 

 present, to be regarded as a distinct and new variety 

 hengalensis nov. 



(e) The specimens from the river near Palopo, Luwu, Celebes, 

 from the river near Mbawa, Flores, and from the 

 other localities mentioned by me, /.c, 1892, p. 386, 

 are not to be referred to Car. wyckii (Hicks.), but 

 ought to be considered as a proper variety, for which 

 the name of hrachydactyla nov. is proposed. 



(/) According to Dr. Caiman {I.e., p. 190), the co- types of 

 Prof. Hickson's species from Celebes should have 

 the carpus exactly as in the types of longirostris ; 

 they are therefore different from the var. hrachy- 

 dactyla and ought to be considered as a distinct variety 

 wyckii (Hicks.). 



(g) All the varieties living on the islands of the Indian Archi- 

 pelago and in Bengal are certainly distinct from those 

 occurring in Africa. 



The typical Car. nilotica (Roux) inhabits Egypt (the Nile, 

 freshwater ponds and canals) ; its at present known varieties are 

 the following : — 



1. var. longirostris , H. M. Edw\ 



2. var. natalensis , n. 



3. var. paucipara, M. Weber. 



4. var. hengalensis , n. 



5. var. wyckii, Hicks. 



6. var. minahassa, de M. 



7. var. hrachydactyla, n. 



8. var. gracilipes, de M. 



River Macta, Or an. 



Natal. 



Natal. 



Bengal. 



Lake Tondano, Minahassa, 



Celebes, at a height of 2,000 



feet above sea-level. 

 Minahassa, Celebes. 

 Celebes, Saleyer, Flores. 

 Celebes, Saleyer. 



Key to the varieties of Caridina nilotica {Roux). 



I, Number indicating the proportion ■" . 



between length and breadth of . . , 



the carpus of ist pair of legs 

 usually 2 or more than 2 ; rarely 

 falling to I "8, or quite excep- 

 tionally to I "66 (var. hengalensis). 



