188 



PROCEEDINGS OF THE NATIONAL MUSEUM. 



Table of measurements in hundredths of length to anus — Continued. 



Albatross station .. . 

 Total length, mvi.-- 

 Len^th to anus, mm . 



Length, head 



Length, orbit 



Width, interorbital . 

 Orbit to preopercle. 



Length, snout 



Length, maxillary. . 

 Length, barbel 



4967 

 129 

 44 

 62.5 

 25 



4967 

 137 

 34 

 63 

 28 

 21 



34 

 U.5 



4967 

 127 



4967 4967 



134 141 



35.5 I 36 



67 66 



4967 

 131 

 42 



4967 

 144 

 35 

 63 

 29 

 20 

 29 

 14 

 36 

 14 



20. HYMENOCEPHALUS LETHONEMUS (Jordan and Gilbert). 



Hymenocephalus lethonemus Jordan and Gilbert, Bull. U. S. Fish Comra., 

 1902 (1904), p. G15, text figure. 



A Ibatross 

 station. 



4918- 

 4919. 

 4968. 

 5059. 

 5060. 

 5060. 

 5067. 



General locality. 



Eastern Sea 



do 



Off east coast of Hondo . 



Suruga Gulf 



do 



.....do 



do 



Sagami Bay 



Uruga Strait 



The lens-shaped body just before the anus is round, as usual in the 

 genus, or slightly oval transversely, but never bilobed, as in H. 

 striatissimus. 



Height of second dorsal spine, 1.4 in head ; height of anal fin, 3.1 ; 

 length of first articulated pectoral ray, 1.8, second and longest, 1.7; 

 outer ventral ray nearly as long as head, and reaching to about twelfth 

 anal ray, when unbroken ; second ventral ray reaching the posterior 

 lens-shaped body, 2.35. 



Scales from the back, near base of dorsal, with about 24 sharp 

 weak spines; those from the sides and belly appear entirely cycloid. 

 Shoulder girdle naked on inner edge. 



Table of Fin Rays. 



