124 PROCEEDINGS OF THE ACADEMY OF [April, 



Type No. 49,946, A. N. S. P. Buraku River at Ako, collected by 

 Eiji Matsuda on February 2,1919. 



Differs from Acrossocheilus formosanus in having the body lower; 

 no black stripes on sides; 5, 3, 1-1, 3, 4 pharyngeal teeth instead 

 of 5, 3, 2-2, 3, 5, and the anal with two undivided rays. 



LISSOCHILICHTHYS new genus. 



Body elongate, compressed, head smooth, pointed anteriorly; 

 snout obtuse, bluntly rounded, slightly prominent, sides with no 

 tubercles, no lateral lobes. Upper jaw projecting beyond the lower. 

 Mouth transverse, inferior, horse-shoe shaped; upper lip entire, 

 with no inner fold. Lower lips considerably broader than the upper, 

 scarcely in contact with each other, distinctly separated from the 

 lower jaw; postlabial groove is restricted to the lateral parts of the 

 lower lip, not continuous. Tip of the lower jaw naked, obtusely 

 rounded, rather fleshy, with no horny substance. Barbels four, 

 two rostrals and two maxillari^es. Dorsal 3, 8, inserted opposite 

 to ventrals. Anal short, with 5 branched rays. Scales moderate, 

 about 42 in the lateral line; 1.1. running along the middle of the tail. 

 Pharyngeal teeth 5, 3, 2-2, 3, 5; gill-rakers short. Type, Lissochil- 

 ichthys matsudai Oshima. 



This genus is very closely related to Lissochilus Weber and Beau- 

 fort, differing from it in having smaller scales, thick lower lips, 

 lower jaw with no horny substance, and connected lower lips. 



18. Lissochilichthys matsudai new species. Plate III, figure 2. 



Head 4 in length; depth 4; D. 3, 8; A. 3, 5; P. 14; V. 8; width 

 of head 2 in its length; interorbital space 3 in head; snout 3; eye 

 3.66; pectoral 1, 36; ventral 1.36; 42 scales in the lateral line, 6 

 scales in an oblique series between origin of dorsal and lateral line, 

 5 scales between the latter and the middle of belly, 3 scales between 

 the lateral line and the root of the ventral; pharyngeal teeth 5, 3, 

 2-2, 3, 5; gill-rakers 3 + 10. Body elongate, compressed, abdomen 

 rounded; top of head more or less fallen from the back; head smooth, 

 pointed anteriorly, bluntly rounded in front, tip of the skin par- 

 tially overlapping the upper lip, sides with no tubercles; interorbi- 

 tal space slightly convex; lateral lobes none; upper jaw projecting 

 beyond the lower; mouth transverse, inferior, horse-shoe shaped, 

 maxillary scarcely reaching a vertical through the posterior border 

 of nostril; upper lip continuous, rather thick, entire, with no inner 

 fold; lower lip nearly twice as broad as the upper, both con- 

 nected anteriorly, postlabial parts distinctly separated from the 



