250 Annals of the Carnegie Museum. 



Synopsis of the Formosan Species. 

 a. Postventral edge only carinate; scales about 85 in the lateral line; 18 scales 

 between lateral line and the origin of dorsal; 10 scales between lateral line and 



the root of ventrals aokii. 



aa. Abdomen entirely carinate; scales about 64 in the lateral line; 11-12 scales 

 between lateral line and the origin of dorsal; 6 scales between lateral line and 

 the root of ventrals brevicauda. 



44. Culter aokii sp. nov. (Plate LII, Fig. i). 

 Kyauyo (Formosa). 



Head 4.05 in length; depth 4.6; D. Ill, 7; A. Ill, 23; P. 15; V. 9; 

 width of head 2.6 in its length; eye 4 in head; interorbital space 6; 

 snout 3.75; eighty-six scales in the lateral line, eighteen scales in an 

 oblique series between origin of dorsal and lateral line, ten scales 

 between the latter and the middle of belly, six scales between lateral 

 line and the root of ventral; pharyngeal teeth 5, 4, 2 — 2, 4, 5; gill- 

 rakers 5 + 22. 



Body oblong, much compressed, postventral abdominal edge 

 carinate, dorsal profile convex; head rather long, laterally compressed, 

 the top osseous, with two bony ridges between the eyes; interorbital 

 space very narrow, slightly convex; many mucous cavities below and 

 behind the orbit; snout bony, tip swollen, a slight depression in front 

 of eye above, tip of its skin not overlapping the upper lip; mouth 

 anterior, subvertical, its angle not reaching the vertical through 

 anterior margin of orbit; lips thin; lower jaw more or less protruding; 

 mentum provided with two strong osseous ridges w^hich are united 

 in front, extending backward to the operculum; isthmus entirely 

 hidden beneath those ridges; eyes large, anterior; nostrils close to- 

 gether, more or less superior; gill-openings very large, gill-membranes 

 entirely separated; gill-rakers slender and long. 



Origin of dorsal in a point midway between tip of snout and base 

 of caudal, with three smooth spines, the first spine very short, hidden 

 beneath the skin, second shorter than half the length of the third, 

 anterior ray the longest; pectoral armed with an osseous spiny ray, 

 reaching the base of ventral; origin of ventral in advance of that of 

 dorsal; anal fin entirely behind the dorsal, elongate, length of its base 

 1. 1 7 in head; caudal fin emarginate, the tip of each lobe sharply 

 pointed; caudal peduncle elongate, its«depth 3 in length of head. 



Body covered with thin cycloid scales; lateral line continuous, very 

 slightly decurved, extending along near the middle of tail. 



