cclxxiv 



as long as high. Fin rays not plaited infeiiorly. Dorsal spine half as 

 long as the head. Blackish, fins yellowish. Dorsal, caudal, and anal 

 handed with hlaek. Jumna, near where it emerges from the Sewulilcs, 

 said to be found in the Deccan. Attains 6 inches in length. 



130. Olj/ptodernum modestiim, Day. D. ^/O, A. 9. The breadth 

 of the head equals its length. Maxillary barbels nearly as long as the 

 head. Lips not fringed. Occipital process slightly longer than broad 

 at its base. Caudal peduncle two-thirds as high as long. Fin raj's not 

 plaited inl'eriorly. Dorsal spine half as long as the head. Uniform brown. 

 U|iper portions of Jumna and rivers near Simla. It attains 3 inches 

 in length. 



Genus — AuBLYCEPS, Blylh. 



BranMostegals twelve. GiU-o})ening wide; gill-membranes not con- 

 Jltient wilh the skin of the isthmus. No thoracic adhesive surface. Head 

 covered with sift siin. Eyes small, subcutaneous. Mouth broad, anterior. 

 Barbels eight. Teeth in jaws villiform : palate edentulous. First dorsal 

 fin enveloped in skin, and having one spine and six rays : pectoral with a 

 short concealed spine : ventrals inserted behind the vertical from the pos- 

 terior margin of the dorsal, and having six rays : anal rather short : caudal 

 forked. Lateral line absent. Air-vessel almost wholli/ enclosed in a bony 

 capsule. 



131. Ambli/ceps mangois, Ham. Buch. Soock-se, £il-li, and Su-daal 

 Panj. D. ^/O, A. 11-12. Head as wide as long. Maxillary barbels 

 reach the end of the pectoral spine. Occipital process rudimentary. 

 Caudal peduncle as deep as long. Olive brown, with a dark line com- 

 mencing opposite the opercles, and dividing into two, one jiroceeding to 

 the centre of the caudal, the inferior to the base of the anal. Jumna, 

 from its source to Ghazipur on the Ganges, likewise the Kangra valley 

 and hills. It attains 4 inches iu length. 



133. Amblijccps caculicns, Blyth. D. J/0, A. 9. Caudal said to 

 be more sharply ibrked than iu the preceding species. No bauds. Burma. 



Genus — Exostoma, Blyth. 



Gill-openings narrow. Eyes small. Head depiressed, covered supe- 

 riorly with soft skin. No thoracic adhesive a2)paratus. ]\[outh inferior, tvith 

 the lips refected around it, and mostly covered ivith glands. Barbels 

 eight or six: ivhen the latter, either one mandibular, or the 'maxillary pair 

 are absent. Teeth in the jaws in a single or double row : palate edentu- 

 lous. Dorsal Jin with a slender or rudimentary spine and six rays ; 

 adipose fin long: pectorals horizontal: ventrals with six rays: caudal cut 

 square, emarginate or forked. Air-vessel in two lateral lobes, both of which 

 are enclosed in bone. 



133. Exostoma Blythii, Day. D. i/0, A. 7. Head as wide as long. 

 Six barbels, the maxilla lieiug destitute of any, but terminating in a 

 fleshy ai)])endage. Yellowish brown. Rivers below Darjeeling, to above 

 3 inches iu length. 



134.. Exostoma laiiatum, ]\IcClelland. D. J/0, A. 6. Eight bar- 

 bels, the maxillary extend to the pectoral fin. Lips broad, having a 

 median and lateral lobe on either side with a barbel between. Colour 

 uniform. !Mishni Mountain, East Assam. 



