207 



dorsal fin; when laid flat it reaches as far as the posterior end of 

 the ventrals, it has 12 strong denticulations internally, 26 smaller 

 ones, directed backwards, externally. All the caudal rays elongate, 

 outer rays not produced. Skin smooth. Colour brownish, irre- 

 gularly banded, barbels annulated with black. 



Hab. Sylhet district, growing to at least 1-5 inches in length. 



221. (4.) Erethistes elongatus. 



Hara elongata, Day, P. Z. S. 1871, p. 704. 



Erethistes elongata, Day, Fish. India, p. 453, pi. cii fig. 5. 



D. 1/6 | 0. P. 1/6. Y. 6. A. 10 (3/7). C. 17. 



Length of head 6|, of caudal 4, height of body 7 in the total 

 length^ Eyes small, situated in the posterior half of the head. 

 Occipital process three times as long as it is wide at its base. The 

 scapular and cubito-humeral processes well developed, the last 

 having an oval ossicle posterior to it. Fins dorsal spine stout, 

 as long as the head, anteriorly strongly denticulated, the teeth 

 being directed downwards, also slightly serrated posteriorly. 

 Pectoral spine one fourth longer than that of the dorsal and 

 serrated on both edges, most strongly internally. Yentral ex- 

 tending two thirds of the distance to the anal ; caudal deeply 

 forked, its outer rays being prolonged. Skin covered with 

 tubular pores. Colour brownish, banded with darker; fins yellow 

 with black bands. 



Hab. Naga Hills, whence a single specimen was procured. 



31. Genus GAGATA, Bleeker. 

 Syn. Batasio, pt., Blyth ; Callomystcuv, Giinther. 



Branchiostegals five to seven. Gill-openings rather narrow, the 

 gill-membranes being confluent with the skin of the isthmus. 

 Thorax smooth. Upper surface of the head with sharp longitu- 

 dinal ridges, and covered by thin skin. Eyes subcutaneous. 

 Snout overhanging the mouth. Nostrils close together, the 

 anterior rounded, the posterior provided with a valve and usually 

 with a barbel. Barbels eight, one pair nasal (sometimes rudi- 

 mentary), one maxillary, and two mandibular pairs arising on a 

 transverse line behind the chin, and usually with stiff bases. 

 Yilliform teeth in jaws ; palate edentulous. First dorsal with one 

 spine and six or seven rays ; adipose of moderate length. Pectoral 

 spine strong. Yeutral with six rays and situated farther back 

 than the dorsal fin. Anal with a moderate (11-16) number of 

 rays. Caudal forked. Air-bladder in two rounded portions, each 

 of which is enclosed in an osseous cup. 



Geographical Distribution. Itivers of Hind, India (except Madras), 

 and Burma. 



