i68 Records of the Indian Miiscmii. [Vol. XXII, 



Barbiis hcxastichits^ McClelland. Nemachiltts boiia (Ham. Buch.). 



Rasbora rasbora (Hani. Buch.). Badis badis (Ham. Buch.). 



Bariltus bendelisis var. chedra Rliynchobdella dhai!ashoyii,sp.n. 



(Ham. Buch.). Ophioccpi'ithts punc/ahis, Bloch. 



I will now discuss .separately the fishes of the four areas enu- 

 merated above. 



The fish-fauna of tlie I.oktak Lake is, unlike that of the Inle 

 Lake, ' not at all specialized. Of the dozen spei;ies obtained from it 

 none are endemic, and all these have also been found in the 

 streams of the valley-. The only new species from the lake is a 

 small loach of the genus Lcpidoccphalichthys which was equally abun- 

 dant all over the valley. The major part of our collection was 

 made in the sluggish streams of the flat countr3\ Here four new 

 species were discovered, one of the genus Lepidoccphalichthys also 

 found in the Loktak Lake, and others belonging to the genera 

 Mastacembelus,Danio and Glyptothorax. Except the Mastaccmbelus, 

 which may grow to a foot or more in length, the new forms are 

 all very small and apt to be overlooked while collecting. Of the 

 remaining species Barbus plmlunio is said to have been introduced 

 in the "Residency ponds from outside the valley. We obtained a 

 large series of specimens but only from these ponds. The eel 

 (Monoptcrus albus) was found buried in mud at the edge of the 

 lake and in rice-fields and was not obtained from any of the 

 streams. 



Most of the new species I collected are from the hill streams 

 of the southern watershed which flow into the Manipur Valley 

 from the adjacent Naga Hills Their restricted distribution is not 

 surprising since they are only found in localised areas in these 

 streams. The new forms chiefly belong to two genera. Neniachilus 

 and BariUus. 



Of the species listed under the heading " Northern watershed, 

 Naga Hills." Ophiocephalus pimctatus, Rasbora rasbora, Badis badis 

 and Rhynchobdclla dhanasJiorii were netted by me at Dimapur in the 

 plains just north of the Naga Hills. The discovery of a species of 

 Rhynchobdclla so far inland is interesting. A parallel instance may 

 be given of a marine genus Moringna, which has been recorded 

 from the Abor country by Dr. B. L. Chaudhuri.'^ Most of the spe- 

 cies obtained in the Naga Hills were collected in the Mithapani and 

 Senapati Streams near Kairong on the main northern watershed of 

 the range. The rest were captured in small streams at various 

 points on the road between the Manipur Valley and Dimapur. 



As a result of our investigations 56 species are now known to 

 inhabit the Manipur Valley and the Naga Hills. Of these 27 be- 

 long to the family Cyprinidae, 12 to the Cobitidae and 10 to the 

 Siluridae. The remaining seven species are distributed among 

 the families Symbranchidae, Mastacembelidae, Ophiocephalidae, 



' /?<?(-. /nd. Mns., Xl\', pp. ,53—64 (191S). 



2 Chaudhuri. /v'cr. /mi. Mns., VIII. p. 255 (1913)- 



