1920.] NATURAL SCIENCES OF PHILADELPHIA. 123 



15. Labeo jordani Oshima. 



Nankan River at Hokuzanko, Nanto (275); Shimo-tamusui 

 Eiver, Ako (1); Tamusui River, Taihoku (2). 



16. Acrossocheilus formosanus (Regan). 



Nankan River at Hokuzanko, Nanto (8); Shishito, Nanto (2); 

 Horisha, Nanto (2); Heirinbi, Giran (4). 



17. Acrossocheilus invirgatus new species. Plate V, flgiue 2. 



Head 4.47 in length; depth 4.19; D. 3, 8; A. 2, .5; P. 15; V. 9; 

 width of head 1.66 in its length; interorbital space 2.73 in head; 

 snout 2.50; eye 5; pectoral 1.11; ventral 1.20; 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 lateral line and the root of ventral; pharyngeal 

 teeth 5, 3, 1-1, 3, 4; gill-rakers 5 + 9. Body elongate, moderately 

 compressed, rather low; abdomen rounded; head smooth, with 

 many mucous cavities below and behind the orbit, upper surface 

 slightly convex; snout rounded, more or less overhanging the upper 

 lip, sides with traces of small tubercles; upper jaw projecting be- 

 yond the lower; mouth inferior, transverse, maxillary scarcely 

 reaching a vertical through anterior border of nostril; upper lip 

 fleshy; lower lips thick, separated anteriorly by an interspace which 

 is about I the width of mouth; anterior border of lower jaw naked, 

 with a sharp, transverse, horny edge; barbels four, the rostral 

 nearly half as long as the maxillary which reaches the middle of the 

 orbit; eye superiqr and slightly anterior; nostrils close together, in 

 front of eye above; anterior nostril in a short tube; pharyngeal 

 teeth slender, pointed; gill-rakers short. Origin of the dorsal 

 nearer to tip of snout than base of caudal, first ray the longest; anal 

 behind the dorsal, rather high, inserted nearer to origin of ventral 

 than the root of caudal, when depressed scarcely reaching the root 

 of the caudal, anterior ray the longest; ventral inserted three scales 

 behind the origin of dorsal, not reaching the vent; pectoral reaches 

 two-thirds distance to ventrals; caudal peduncle compressed, its 

 depth 2 in head; caudal fin slightly forked, tip of each lobe sharply 

 pointed. Body covered with uniform scales; lateral line continuous, 

 nearly straight, running along the middle of the sides. Color in 

 alcohol dark bluish gray above, sides silvery, with no black stripes; 

 throat and belly whitish; tip of head dark; membrane of dorsal 

 fin dark; pectorals grayish; ventrals and anal whitish, their branched 

 rays reddish yellow; caudal fin fuscous, partially reddish-yellow 

 colored. Total length 160 mm. 



