488 



BULLETIN 100, UNITED STATES NATIONAL MUSEUM. 



34. COELORHYNCHUS ACANTHOLEPIS, new species. 



Coelorhynchus platorhynchus form alpha Radcliffe, Proc. U. S. Nat. Mus., 

 vol. 43, 1912, p. 134, text fig. 9 (exclusive of the specimen from Albatross 

 station 5111). 



Coelorhynchus japonicus Weber, Die Pische der Sit>o<7ffl-Expedition, 1913, 

 p. 163 (not Macrurus japonicus Temminck and Schlegel). 



Type- specimen.— Cat. No. 78222, U.S.N.M.; 316 mm. long, 118 mm. 

 to anus, from Albatross station 5587, off Borneo; figured by Rad- 

 cliffe. 1 



List of paratypes. 



Albatross 

 station. 



Locality. 



Length 



to 

 anus. 



5587 



5585 

 5585 



Vicinity of Sibuko Bay, Borneo 



do 



do 



113 



59 



132 



1 About. 



% 



In the following description comparison is made with C. plato- 

 rhynchus- certain details alike in the two species are omitted. After 

 the various measurements and counts of the type, two additional 

 measurements or counts, if different, are given in parentheses: first, 

 of the paratype 113 mm. long to anus; second, of the specimen 59 

 mm. long to anus; the smallest one, being in poor condition, is not 

 included in the description. 



Fin-rays — first dorsal, II, 9; pectorals, 17 (18, 18); ventrals, 7. 



The form of the head as seen from above is well figured by Rad- 

 cliffe (see fig. 17). The depth of the body, 1.8 (1.9, 2.4) in head, is 

 slightly greater below the origin of the first dorsal fin than at any 

 other vertical; greatest width of body, 2.4 (2.3, 2.75). Measurements 

 of snout into head — preocular length, 2.6 (2.55, 2.4) ; preoral length, 

 3.05 (2.9, 2.85) ; width across base of snout, 2.6 (2.6, 2.5) ; width 

 across snout, at end of ethmoid portion of infraorbital ridge, 0.8 

 (0.8, 0.85) in length of snout before that point. Least distance be- 

 tween divergent occipital ridges, 1.8 (1.6, 1.85) in interorbital. 

 Length of orbit— into head, 3.4 (3.6, 3.4) ; into snout, 1.33 (1.35, 1.35) ; 

 into postorbital, 1.15 (1.15, 1.05). Least interorbital width, 1.5 

 (1.6, 1.4) ; least suborbital width, 2.3 (2.25, 2.2). Length of upper 

 jaw, 3.9 (3.9, 4.0) ; the upper jaw extends from below the anterior 

 nostril to behind the pupil. Length of barbel, 4.8 in postorbital 

 (in largest paratype). 



Distance from center of anus to base of outer ventral ray, 2.65 

 (2.8, 2.7) into head; distance between ventral and isthmus, 3.05 

 (3.4, 3.4) ; distance from anus to isthmus, 1.5 (1.7, 1.6). 



1 Proc. U. S. Nat. Mus.. vol. 43. p. 134. text fis. 9. 



