GENUS AND TEN NEW SPECIES OF JAPANESE FISHES. 19 



Length of middle caudal rays 

 Number of spines and rays of dorsal 

 Number of spines and rays of anal 

 Number of rays of pectoral 

 Number of spine and rays of ventral 



1.1 cm. 

 XIII, 18 



III, 18 

 17 

 1,5 



8. Ophiocara gracilis, o. sp. 



Height of body 3^, head of in total length as measured to 

 root of middle caudal rays. Eye about 4, interorbital about 4, 

 snout 4t, height of caudal peduncle 2 in head. 



Body rather elongate, compressed ; dorsal outline slightly 

 elevated, the highest part of body at vertical through origin of 

 first dorsal ; caudal peduncle much more compressed than body, 

 moderately high. Head rather small, somewhat broad, depressed 

 above, its height at posterior edge of opercle less than 

 length of head by half diameter of eye ; upper profile almost 

 straight. Eye small, lateral, high. Interorbital slightly convex, 

 equal in width to diameter of eye ; snout short, pointed when viewed 

 from side, but broadly rounded when viewed from above ; posterior 

 nostril circular, tubeless, just in front of eye ; anterior nostril 

 with a low fiap, near anterior edge of preorbital. Mouth ter- 

 minal, oblique, lower jaw projecting. Maxillary nearly reaching to 

 anterior edge of orbit, its distal end very slightly exposed. Teeth 

 in jaws small, slender, but sharp, in a band of several rows, 

 the band being wider anteriorly ; teeth of outer series larger. 

 No teeth on vomer and palatines. No spine on preopercle. Gill- 

 openings lateral, width of isthmus equal to half diameter of eye ; 

 gill-rakers long, pointed, 4 + 12; pseudobranchiaä well developed. 

 Dorsals well separated from each other ; first dorsal inserted 



