210 TELEOSTEI. PHT.8OSTOMI. 



entire; pectoral spine strong and serrated internally; caudal 

 lobed. Colour body diaphanous, having along either side two 

 stripes spotted with black. 



Judging from the mandibular barbels and general structure of 

 this fish, it would appear to be a Gagata, whilst it is observed 

 " there is no slit under the throat." 



Hab. Eiver Teesta : attaining 3 inches in length. 



225. (4.) Gagata tengana. 



Pimelodus tengana, Ham. Such. Fish. Ganges, pp. 176, 377, pi. xxxix, 



fig. 58. 

 Gagata tengana, Day, Fish. India, p. 493 (see synon.). 



B. vi. D. 1/7 | 0. P. 1/8. V. 6. A. 14 (4/10). C. 15. 



Length of head 4, of caudal fin 4, and height of body 4 in the 

 total length. Eyes of moderate size, situated nearer to the snout 

 than to the posterior end of the opercle. Back rather prominent. 

 Width of the head equal to its height, or to its length excluding 

 the snout. Mouth small, upper jaw slightly the longer. Median 

 longitudinal groove on the head lanceolate and extending to the 

 base of the occipital process, which is twice as long as it is wide at 

 the base, and reaches the basal bone of the dorsal fin. Barbels 

 the nasal reach the hind edge of the orbit, and all the remainder 

 are shorter than the head. Fins the first dorsal cut obliquely, 

 its spine smooth. Pectoral spine serrated internally. Colour 

 body diaphanous, having a gloss of gold on the sides. On the back 

 are many black dots which are collected into a blotch above the 

 pectoral fin, and another blotch exists on the crown of the head. 

 Dorsal and caudal fins dotted, edges nearly black. 



This fish, which is found in Assam, agrees with O. cenia except 

 that the nasal barbels are described and shown as being much 

 longer, and the colour differs. 



Hab. Brahmaputra river ; attaining to about 3 inches in length. 



32. Genus NANGEA, Day. 



Branchiostegals five or six. Grill-openings rather wide, and not 

 adherent or only slightly adherent to 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, which is transverse. Nostrils close to- 

 gether, the anterior rounded, the posterior with a barbel. Barbels 

 eight one pair nasal (which may be rudimentary), one maxillary 

 and two mandibular pairs, the inner of which last are anterior to 

 the external pair. Villiform teeth in jaws ; palate edentulous. 

 First dorsal fin with one spine and six to eight rays ; adipose of 

 moderate length. A pectoral spine. Ventral with six rays situ- 

 ated farther back than the dorsal. Anal with a moderate number 



