1921.] S. L- HORA : Fish oj Manipur. 171 



between it and Kanglatombi among the Naga Hills. The Imphal 

 River, the chief river of the valley, rises near Kanglatombi and 

 flowing southwards through the valle}' ultimately joins the Chind- 

 win, a tributary of the Irrawadi. The streams of the northern 

 watershed on the other hand form part of the Brahmaputra 

 System. 



Seventeen species of fish belonging to six families and 12 

 genera are represented from the northern watershed. All the 

 families are widely distributed in the waters of the Oriental and 

 Ethiopian Regions. 



Of the 12 genera, 11 are distributed in the fresh waters of the 

 adjacent country, while the germs Rhynchohdella, which has hither- 

 to only been found in the deltas of all the large rivers of India 

 and Burma, is now for the first time recorded from far inland. 



Of the 17 species, 4 are only known from the Naga Hills. 

 Of the rest. 9 are distributed all over India and Burma and 

 the remaining 4 do not extend to Burma but occur along the 

 base of the Himalayas. Barbiis clavatas, which is redescribed in 

 this paper, has so far been known from a single specimen ob- 

 tained from a river at the base of the Sikkim mountains. 



On the whole the fauna of the northern watershed, so far as 

 the fish are concerned, is chiefly Assamese and only differs from 

 that of the Brahmaputra Valley in so far as it contains hill-stream 

 species. 



Forty-two species of fish collected from the southern water- 

 shed belong to six families and 21 genera. All the families are 

 widely distributed in the Oriental and Ethiopean Regions. Of the 

 21 genera, 20 are widely distributed in India and Burma, while 

 the genus Monopterus is confined to south-eastern Asia and has 

 not so far been recorded from the Assam Valley. Of the 42 species, 

 18 are widely distributed in India and Burma ; 11 are known only 

 from Manipur ; the remainder with the exception of 3 are 

 exclusively Burmese. Of these 7 were recorded and described 

 from the Sitang River by Blyth,' two have been described from 

 the S. Shan States (one by Boulenger'^ and the other by Annan- 

 dale^), and the remaining species by Vinciguerra* from Meetan. 

 The only Assamese species are Garra yiipiculus, which was des- 

 cribed from the Mishmi Hills north-east of the Brahmaputra Valley, 

 and Garra nasutits of the Khasi and the Mishmi Hills. Annandale,^ 

 while deahng with the Batrachians of the Abor country, adduced 

 evidence to show that the fauna of the Khasi, Mishmi and other 

 adjacent hill tracts is similar and differs from that found on the 

 other side of the Brahmaputra River. My results confirm the 

 above statement. 



' Blyth, Joutn. As. Soc. Bengal, XXIX, pp. 1.18 — 174 (1S601 

 •2 Buulengcr, Ann. Mag. Nat. Hist., (6) XII. p. 201 (1893). 

 3 Annandale. Rec. Imi. Mas., XI\', p. 54, text-tig. 2, pi. 2. fig. 7; pi. iv, 

 fiS5. j6, 17 (igiSj. " [(1889). 



* X'inciguerra. An)t M-ts. Star. JVaf. Geno'oa, XXIX, p. 2.)6, pi. vii, fiij. 4 

 6 Annandale, Rec. hid. Mits.. \'III. p. .^6 (1912'. 



