IQIQ-] B. L. Chaudhuri : Fish from Burma. 275 



The single spines of the dorsal and of the pelvic fins are 

 round, smooth and hyaline, but that of the pectoral fin is flat and 

 striated. 



The species superficially resembles Amblyceps marginatus 

 Giinther, collected by Mr. Pratt in mountain streams running 

 into the MIn River in the province of Sze-chuen in China, but 

 it differs in possessing a shorter head, in being of a lesser depth, in 

 having the upper jaw longer instead of shorter than the lower jaw, 

 in having a longer adipose dorsal and shorter barbels, in having 

 corrugated folds of skin on the ventral side, and also in the posi- 

 tion of the fins and in proportions. The colouration is also differ- 

 ent; in particular the new species does not possess the broad 

 whitish border round the margins of all the fins. It resembles 

 A. marginatus in having a subtruncated caudal, and a short pelvic 

 fin not reaching the anal. The widely distributed Indian species 

 Amblyceps mangois (H.B.) — hitherto the sole representative of the 

 genus in the continent of India — -differs from the new species in 

 having a prominent lower jaw, a divided caudal fin, longer barbels 

 with non-dilated roots, a smooth ventral surface, a shorter and 

 higher adipose fin and in the number of fin-rays as well as in pro- 

 portions. 



The type specimen is 81 mm. in length without the caudal fin 

 and is entered in the register of the Zoological Survey of India 

 under No. 9736/1. It was collected by Dr. Murray-Stuart of the 

 Geological Survey of India from a mountain stream in the Putao 

 Plains on the northern Frontier of Upper Burma in the month of 

 February, 1918. 



Amblyceps mangois (Hamilton Buchanan). 



1822. Pimelodiis mangois, Hamilton Buclianan, F/5/7. Ganges, pp. 159 and 



379- . . 



1842. Pimelodns anisiinis, M'Clelland, Calcutta Journ. Nat. Hist. Art 



Sci., II, p. 583- 

 1842. Pimelodns indicns. Id., ibid., p. 584. 



1853. Pimelodns mangois, Bleeker, Verli. Batavia Gen., XXV, p. 58.^ 

 1858. Amblyceps caecntiens, Blyth, Proc. Asiat. Sac. Bengal, XXVII, 



p. 282. 

 i860. Amblyceps tennispenis. Id., ibid., XXIX, p. 153. 

 1864. Amblyceps caecntiens, Giinther, Cat. Fish. Brit. Mns., V, p. igo. 

 1864. Amblyceps tennispinis. Id., ibid. 

 1864. Amblyceps mangois, Id., ibid. 



1869. Amblyceps mangois. Day, Proc. Zool. .Soc, p. 524. 

 1 87 1. Akysis kitrzii, l)ay, ibid., p. 704. 



1877. The Mangoi, Hamilton Buchanan. Stat. Act. Bengal, XX, p. 60. 

 1877. Amblyceps mangois. Day, Fish. Ind.. p. 490, p'- cii, fig. 6, and pi. 



cxvii, fig. I. 



1889. Amblyceps mangois. Id., Faun. Brit. Ind. Fish., I, p. 123, fig. 52. 



1890. Amblyceps mangois, Vinciguerra, Ann. Mus. civ. Stor. Nat. Geneva 



(ser. 2), IX, p. 196. 

 1893. Amblyceps mangois. Boulengcr, Ann. Mag. Nat. Hist., (ser. 6), XII, 



p. 200. 

 1913. Amblyceps mangois, Chaudhuri, Rec. Ind. Mus., \'III. p. 252. 



Two figures, one in outline from above and the other a side 

 view in colour, are in existence on plate ix of Hamilton Buchanan's 



