Fislips fi'iim Yunnan Fu. 103 



or beyond, the mental ones nearly 5 as long-. I). 4, its distance 

 from the tip of snout ^ its distance fVoni the caudal. A. TI- 

 TS, continued on to the caudal. P. I 12, the spine stout, 

 anteriorly somewhat roughened or slightly serrated, poste- 

 riorly with a series of 6-9 fairly strong- teeth, its length a 

 little more than ^ that of the soft part of the tin, which 

 extends nearly to the origin of ventral. Ventrals with 10 

 rays, originating just in front of the vent and extending to 

 the third or fourth ray of anal. Caudal truncate rounded. 

 Greyish, clouded with blackisli. 



T^'.'O specimens, 115 and 215 mm. in total length. 



10. Liobagrus nigricauda^ pp. n. 



Depth of body about 6 times in the total length, length of 

 liead 3g-/i| times. Breadth of head lg-l|- times in its 

 length, interocular width 2|-3 times, length of snout about 

 3^ times. Eyes very smalL Jaws equal anteriorly ; mouth 

 wide. Post-mental barbel the longest, extending to base of 

 pectoral or a little beyond. D. I 5, the spine concealed in a 

 fold of skin which also extends over the soft rays, about § 

 the length of head; adipose fin low, originating above or a 

 little in advance of the anal and extending on to the pro- 

 current rays of the caudal. A . 15, P. I T, the spine concealed 

 like that of the dorsal, a little more than \ the length of the 

 fin, which is rounded and nearly equal in length to f the 

 length of head, extending i the distance from its base to the 

 origin of ventral. V. 6. Caudal rounded. Greyish, spotted 

 or marbled with darker; dorsal and pectoral in great part 

 blackish ; ventrals and anal with or without blackish spots ; 

 caudal, in the smaller specimen, with a large median blackish 

 blotch confluent with a semioval blackish basal band, in the 

 larger specimen almost entirely blackish except for two small 

 light areas on the upper and lower margins respectively. 



Two specimens, t^l: and 9G mm. in total length. 



The genus Liobagrus, established in 18T8 by Hilgendorf 

 f < r L. Beinii ixom Southern Japan, is allied to Akgsis and 

 Acrochordonichthys, but is distinguished by the truncate or 

 rounded caudal and by the wide gill-openings, which are not 

 lestricted from above, whilst the gill-membranes are entirely 

 separate from each other and from the isthmus. Amhlgceps 

 tiiarginatus, Gthr. (Pratl's ' Snows of Thibet,' Appendix, 

 ]). 24 5, pi. ii. fig. A, 1892), is another species of this genus, 

 diftcring from the one described above in the coloration, 

 projecting lower jaw, longer barbels, and truncate caudal, 

 Amblgcfps is distinguished from Liobagrus by the nostrils, 



Ann. ii' Alng. N. /fist. Ser. 7. VoL xiii. 13 



