Jordan and Evermann. — Fishes of North America. 2587 



moderate size, tlie maxillary reacliiug vertical from liinder margin of orbit, 

 cMiualing length of siiont and I of eye. Teeth finely villiform, in each 

 jaw, the outer series not at all enlarged, the mandibular band narrow. 

 Barbel short and slender, its length less than \ diameter of pupil ; inter- 

 orbital width T diameter of orbit, equaling length of snout; preopercle 

 greatly expanded, much overlapping the interorbital below, leaving 

 exposed only the extreme posterior angle. Gill membranes narrowly 

 joined, with a i30sterit)r fold, free from the isthmus ; gill rakers short, com- 

 pressed, almost tubercular, 2 + 12. Origin of dorsal well behind base of 

 pectorals; second dorsal spine long and filamentous, strongly spinous 

 except on extreme base and tip ; length of spino % to L' head ; base of first 

 dorsal equaling diameter of orbit; interspace between dorsals j to * base 

 of first dorsal; pectoral long and slender, equaling length of head behind 

 anterior nostril opening, about as long as the filamentous outer ventral 

 ray ; vent immediately in front of anal origin. Scales on sides well imbri- 

 cated, each with 7 to 9 parallel ridges which bear short sharp spines 

 directed very obliquely backward; 7 scales between lateral line and 

 base of first dorsal. Color uniform light grayish on body and fins, with 

 the exception of the blackish pectorals and ventrals ; sides of head silvery ; 

 mouth, gill cavity, and peritoneum brownish or purplish black; gill mem- 

 branes and giilar membrane dusky. (Gilbert.) Bering Sea; excessively 

 abundant in the depths, where it outnumbers all other fishes. Numerous 

 specimens from north of Unalaska Island, at Albatross Stations 3307 and 

 3329, in 1,033 and 399 fathoms; and the North Pacific, south of Unimak 

 Island, ^llhatross Station 3340, in 69.5 fathoms. Our many specimens from 

 near Bogoslof Island, in 664 fathoms, (cinereus, ashy gray.) 



Macrourus cinereitg, Gilbert, Kept. U. S. Fish Couim. 1893 (1896), 457, near Unalaska 

 and Unimak Islands, in 399 to 1,033 fathoms; Jordan & Gilbkht, Report Fur Seal 

 Invest., 1898. * 



1007. CCELORHYNCHUS, Giorna. 



Ccelorhtjnchiig, GlOENA, Mem. Ac. Sci. Turin, xvi, 178, 18(1.3 (" Ccelorhynche la villi:"). 

 Krohnivs, Cocco, Lettera al Sig. Augusto Krobn, Pesci del Mare de Messina, 1, 1844 {jila- 



tnentosus ; larva) . 

 Paramacruriis, Bi.eeker, "Versl. Med. Ak. Weteusk. Amateid. 1874, 103 {australis). 

 Oxymacrurus, Bleekek, Versl. Med. Ak. Wetensk. Amaterd. 1874, 103 (japonicus) . 



This genus agrees with Macrowrus in all essential respects, except that 

 the small mouth is wholly below the long-pointed, sturgeon-like snout. 

 Dorsal spine smooth in typical species, those with serrate spine having 

 been lately separated under the generic name Calocephalns. (Gilbert &. 

 Cramer, Proc. II. S.Nat. Mus. 1896,422) (acipenserinus). Species numerous. 

 (hoIXoi;, hollow; pvyxoi, snout.) 



a. Head large, 3J in length; depth 7; eye J length of the long snout, 4 in hoad; dorsal 

 spine moderate. occa, 2964. 



aa. Head short, 4J to 5 in length. 



6. Body rather elongate, the dei)th 8 in length; eye as long as snout, 3 in head. 



CABMlNATnS, 2965. 



hh. Body less elongate, the depth C| to 6J in length. 



c. Dorsal spine long ; anal rays about 110; scales 124. caribb.eds, 2966. 



cc. Dorsal spine very short; anal rays 95; scales 98. scaphopsis, 2967. 



