2149, JAPANESE MACROUROID FISHES—QILBERT AND HUBBS. 187 



19. HYMENOCEPHALUS STRIATISSIMUS (Jordan and Gilbert). 



EynienocepJialus striatissimus Jordan and Gilbert, Bull. U. S. Fish Comm., 

 1902 (1904), p. 612, text figure. 



The posterior of the two lens-shaped bodies is characteristically 

 bilobed in this species. 



The fins were all injured in the type-specimens. The height of the 

 second dorsal spine is contained nearly 1.3 times in the head; third 

 dorsal ray, 1.3; height of anal, 3.75; length of first articulated pec- 

 toral ray, 1.5; the second and longest, 1.4; length of outer ventral 

 ray, 1.6, reaching to second anal ray; second ventral ray, 2.1, not 

 nearly reaching to anus. 



Shoulder girdle naked on inner edge. 



Table of fin rays. 



Tables of measurements in hmidredths of length to amis. 



Albatross station 



Total length, mm 



Length to amis, mm 



Length, head 



Length, orbit 



Width, interorbital 



Width, suborbital 



Orbit to preopercle 



Length, snout 



Length, maxillary 



Length, barbel 



Depth, body 



Width, body 



Anus to ventral 



Ventral to isthmus 



Height, second dorsal spine. . . 



Height, third dorsal ray 



Length, first dorsal base 



Interdorsal space 



Height, second dorsal 



Height, anal (first ray) 



Length, first pectoral ray 



Length, second pectoral ray. . . 



Length, outer ventral ray 



Length, second ventral ray . . . 



Scales, above lateral line 



Gill-rakers, lower limb, second 

 arch 



5059 

 160 

 41 

 63 

 26 

 19 

 7.5 

 27 

 14 

 32 

 10 

 48 

 29 



50 

 22 

 49 

 10 

 19 



3.5 

 41 

 43 

 32 



3 



4966 

 170 

 43 



22.5 

 52 

 10 

 19.5 



4897 

 159 

 40.5 



10.5 

 50 



4968 

 170 

 43 

 63 

 26 

 19 

 7 



18 

 3.5 

 38 

 43 

 32 



4968 

 1S3 

 46 

 63 



30 

 15 



37.5 

 9 

 47 

 26 



4968 

 178 

 45 

 61 

 26 

 20 

 8 

 28 

 15 

 34 

 10 

 43 

 29 



