40 



S. TAN AK A : 





1.4 cm. 





0-3S » 





0.15 „ 





O.3 m 





O.85 „ 





3I » 



I »istance between tip of lower jaw and origin of anal 



3-6 „ 





0.5 



6. Carapus sagamianus, n. sp. (Carapidae.) 



Head 9! to 10, height of body at insertion of anal 15 to 16 in 

 total length ; eye 4 to 4§, interorbital 4 to 4|, snout 4 to 4|, maxillary 

 2 in head. 



Body eel-shaped, compressed, tapering towards the long and slender 

 tail. Head rather small, slightly higher than wide; eye moderate, 

 impinging on the upper profile ; interorbital broadly convex ; snout 

 sharply pointed when viewed from side, but rather broadly rounded 

 when viewed from above. Mouth subinferior ; lower jaw slightly 

 included ; maxillary extending to vertical through the posterior rim of 

 orbit. Teeth on jaws small, pointed, in one row ; palatine teeth 

 slightly larger, arranged likewise in a single row ; vomerine teeth 

 slightly larger than palatine ones, in a narrow band, consisting of 

 about 4 longitudinal rows. Dorsal inserted behind pectoral ; distance 

 from lower end of pectoral base to origin of dorsal equal to that from 

 the former to tip of snout ; height of the fin along the rays at the 

 end of the first third of dorsal equal to diameter of orbit. Anal 

 inserted behind pectoral, at vertical through the middle of its length, 

 the height along the rays at its highest part equal to length of post- 

 orbital part. Pectoral small, located somewhat low, sharply pointed 

 posteriorly. Caudal small, confluent with the vertical fins. No ventral. 



