490 



BULLETIN 100, UNITED STATES NATIONAL MUSEUM. 



j'ossa, the area between the orbit and the infraorbital ridge, and the 

 underside of the head are completely naked. 



Length of first dorsal base, 1.6 (1.6, 1.9) in postorbital length of 

 head; length of interdorsal space (1.3, 1.6) in postorbital Length 

 of fin-rays in head — second dorsal spine 2.0-f- 1 (l-7+ 1 ) ; pectoral fin, 

 2.1+ 1 (2.0+ 1 ) ; length of outer ventral ray, 2.4 (1.75, 2.5) ; length of 

 inner ventral rays, 3.1 (in largest paratype). 



Coloration in alcohol. — Dark brown (as in platorhynchus) , becom- 

 ing blackish on the fins, belly, underside of head, and the opercle. 

 The buccal, branchial, and visceral cavities are lined by dark 

 brownish membranes; the light margin along the free edge of the 

 branchiostegal membrane is indistinct. The color is lighter in the 

 young, being grayish on the head. 



FlG. 18. COELOUHYXCHUS ACANTHOLEPIS. TYPE. 



Measurements of type in hundredths of length to anus (113 

 mm.). — Length of head, 71; length of orbit, 21; postorbital length 

 of head, 24.5; least interorbital width, 16.5; least suborbital width, 

 10.5; distance between orbit and preopercular margin, 26; preocular 

 length of snout, 28; length of upper jaw, 19; greatest deptli of body, 

 39; greatest width of body (across pectoral bases), 28; distance be- 

 tween center of anus and base of outer ventral ray, 26 ; distance be- 

 tween ventral and isthmus, 24.5 ; length of first dorsal base, 15 ; length 

 of outer ventral ray, 30. 



35. COELORHYNCHUS CARINIFER, new species. 



Coelorhynchus platorhynchus form alpha Radcudbte, Proc. U. S. Nat. Mas., 

 vol. 43, 1912, p. 134 (.specimen from Albatross station 5111 only, the type 

 of C. carinifer). 



Type-specimen. — Cat. No. 78223, U.S.N.M. ; 332 mm. long to end 

 of broken pseudocaudal, 128 mm. long to anus; dredged at Alba- 



1 Indicating- a broken tip. 



