2588 Dullctin //, United States National Mnseum. 



2064. COELOUHYNCHUS OCCA (Goode .t Bean). 



Head 3i iu total lennth; depth 7 iu total leugth; snout exceedingly 

 eloni;ate, nearly twice as long as diameter of eye; a black flaii between 

 nostrils; angle of mouth nearly reaching vertical from posterior margin 

 of the orbit ; ridge of head very stroiig and continuous from snout to angle 

 of preopercle, liaviug, also, strong supraocular and occipital ridges ; eye 

 nearly round, its horizontal diameter 4 in head and equal to interorbital 

 space; A'eutral originating under middle of first dorsal, and extending 

 to fourth i-ay of anal; distance from ventral origin to A-ent 3i- in length of 

 head; second spine of dorsal weak and smooth, its length equal to jjost- 

 orbital part of head, its base slightly less than distance between first and 

 second dorsals; scj^uamation excessively rough, each scale bearing about 5 

 large spines besides many smaller ones, the median spine of the large series 

 being much the largest; 5 rows of scales between origin of dorsal and 

 lateral line, 19 from vent forward to lateral line and 12 backward ; barbel 

 \ as long as snout. This species has scales similar to those of Macrotirus 

 herglax, there being a strong median keel formed by series of spines, of 

 which the last is the largest; surface of each scale also with about 

 4 or more lateral ridges formed by series of short spines. In a much 

 larger example (U. S. Nat. Mns. No. 37334), measuring 18 inches in 

 length, the lateral series of keels have greatly increased in number, 

 the individual spines having become more prominent, so that the 

 medi.in keel has become less conspicuous than in the type. In the 

 larger specimen referred to, the nakedness of the under surface; of the head 

 is even more pronounci'd than in the smaller, in which the under surface 

 of the head beneath the suborbital and nasal ridge is almost entirely 

 naked. The intermaxillary has a very short bone similar in structure and 

 dentition to that of Macrourus henjlax, that is to say, the intermaxillary 

 teeth are in a rather broad villiform baud, and the outer teeth are not 

 enlarged; mandibulary teeth in a similar broad villiform band; mouth 

 entirely inferior and small. Gill membranes attached across the isthmus, 

 very little emarginate, and not deeply cleft; in the large example the gill 

 membrane is attached to the isthmus and not deeply cleft, Ijut there is a 

 very narrow free margin behind. The gill rakers are very .short, tubercular, 

 and few in numl)er, ceitainly not more numerous than in M. herglax ; iu 

 the large example only 8 little tubercles can 1)6 seen on the lirst gill arch. 

 Second spine of the dorsal in the type specimen is smooth, with the excep- 

 tion of 2 weak spines near its tip, but in the large example there is no trace 

 of serrations on the dorsal si)ine. (Goode A: Bean.) Leugth 450 mm. Gulf 

 of Mexico and West Indies, in deep water, {occa, a harrow, from the 

 rough scales.) 

 Macrurus occa, Gooue & Bean, Proc. C. S. Nat. Mus. 1885, 595, Gulf of Mexico, Lat. 28° 



34' N., Long. 86° 48' W., in 335 fathoms. (Type, No. 37334.. Coll. Albatross.) 

 Goelorhynchus occa, Goode & J5ean, Oceanic Ichtbyology, 400, figs. 332, 333, and 337, 1896. 



2965. C(ELORH¥NCHUS CARMIXATUS (Goode). 



Head about 5 in total length; depth 8; eye about 5 in head, equaling 

 iuterorV)ital width; snout equaling eye or postorbital part of head; length 

 of opercle about 2 in snout. Body less elongate than iu If. bairdii. Snout 



