192 Mr. C. T. Regan on 



G. Mhgurnus avguilUcaudatus, Cantor. 



7. Nemachilus pleurofcenia, sp. n. 



Depth of body 5 times in the total length, length of head 4 

 times. Snout nearly as long as the postorbital part of head. 

 Diameter of eye 4^ times in the length of head and nearly 

 equal to the interorbital width. Nostrils well separated, the 

 anterior tubular. Rostral barbels shorter than the one at 

 the angle of the mouth, which is ^ the length of head. 

 Scales minute ; thorax naked ; lateral line present anteriorly, 

 disappearing before origin of dorsal. D. Ill 8, its origin 

 equidistant from anterior nostril and base of caudal, above or 

 slightly in advance of the origin of ventral. A. Ill 5. 

 Pectoral extending f. of the distance from its base to origin of 

 ventral. Ventral with 9 rays. Caudal bilobed. Caudal 

 peduncle 1£-1^ times as long as deep. Back with some 

 dark spots or markings ; a blackish longitudinal stripe along 

 the middle of the side; fins immaculate. 



Two specimens, 4G and 51 mm. in total length. 



8. Nemachilus nigromaculatus, sp. n. 



Depth of body 4-4£ times in the total length, length of 

 head 3* times. Snout shorter than the postorbital part of 

 head. Diameter of eye 4f-5^ times in the length of head, 

 interorbital width 3-3j times. Nostrils well separated, the 

 anterior tubular. Rostral barbels shorter than the one at tiie 

 angle of the mouth, which is less than \ the length of head. 

 Scales very small, not imbricated ; thorax and abdomen 

 naked ; lateral line absent. D. Ill 8, its origin equidistant 

 from middle of eye and base of caudal, a little in advance of 

 the origin of ventral. A. Ill 5. Pectoral extending \-^ of 

 the distance from its base to origin of ventral. Ventral with 

 8 rays. Caudal truncate. Caudal peduncle as deep as or 

 deeper than long. Back and sides spotted or marbled with 

 blackish ; fins immaculate. 



Two specimens, 61 and 77 mm. in total length. 



9. Silurus men to, sp. n. 



Depth of body 5j-5£ times in the total length, length of 

 head 4-4 § times. Breadth of head lf-lf times in its length, 

 diameter of eye 7^-9^ times, interorbital width 3-3^ times, 

 length of snout 3§-4 times. Lower jaw projecting, the 

 mouth superior ; vomerine teeth in two separate patches; 4 

 barbels, the maxillary ones extending to the base of pectoral 



