2590 BuUeiin //, U^iited States National Mtisciivi. 



first arch. Suborbital ridge very strong, continued almost in a straight 

 line by the lateral ridge of the snout; under surface of head, except chin 

 and branchiostegal region, densely covered "svith small, spiny tubercles; a 

 naked space on underside of snout, occupying almost entire distance from 

 front of moutli to tip of snout, widest anteriorly, the greatest width 5 in 

 snout; intermaxillary protractile in a vertical direction ; mouth distinctly 

 inferior. Origin of second dorsal over seventh anal ray, about an eye's 

 diameter behind first dorsal ; length of anal rays about 4 in head ; origin 

 of pectoral in front of first dorsal, its length 2 in head, its tip reaching 

 fifth anal ray. Color silvery gray, with yellowish and lavender tints. 

 Length 290 mm. Caribbean Sea north to the Gulf of Mexico, in deep 

 water. (can?)i!»«?/s, of the Caribbean Sea. ) 



Macrurus caribbceus, Goode & Bean, Proc. U. S. Nat. Mus. 1885, 594, Gulf of Mexico, at 

 Albatross Station 2377, Lat. 29° 07' 30" N., Long. 88° 08' 'W., in 210 fathoms (Type, 

 No. 37333) ; GiiNTHER, Cli,alleiiger Keport, Deep-Sea Fishes, xxn, 124, note 3, 1887. 



Cwlorhynchus caribbceus, Goode & Bean, Oceauic Ichthyology, 401, fig. 338, 1890. 



2907. «;{ELORHYlVt:HUS SCAPHOPSIS (Gilbert). 



Depth 6| in total length ; head 4^ ; scales 98. D. II, 8 ; A. ca. 95, Snout 

 flattened, acute, the conspicuous infraorbital ridge forming a strong ridge 

 along its sides, the two meeting at tip in a salient point; an evident keel 

 extending from tip of snout to middle of interorbital area; supraorbital 

 ridge dividing anteriorly, 1 branch running down in front of nostril, 

 the other separating nostril fossa from orbit; l>etween the ridges the head 

 is covered with a soft, yielding integument, which is semitranslucent. 

 Lower side of snout wholly naked below, and with a large naked area 

 above on each side of tip; snout projecting beyond mouth for a distance 

 equaling length of maxillary. Month of moderate size, the maxillary 

 reaching vertical from posterior margin of pupil, 3^ in head. Teeth villi- 

 form, in a broad band in upper jaw, in a narrower band below, not reduced 

 to a single series laterally in either jaw, and none of the teeth enlarged. 

 Eye large, elliptical, equaling length of snout, 3J in head; interorbital 

 width 4^. Barbel short, about h pupil ; preopercular angle greatly pro- 

 duced backward, wholly concealing the interopercle, the strong infra- 

 orbital ridge failing to reach preopercular margin Ity only ^ diameter of 

 pupil. Structure of gills as usu.al in this genus, the gill rivkers obsolete; 

 gill membranes Ijroadly united, joined to isthmus, across which they 

 form posteriorly a very narrow free fold. Besides the ridges already 

 described on head, there are a pair on occiput, a pair from upper posterior 

 margin of orbit to upper angle of gill opening, and a median ridge on nape 

 reaching al)ont halfway from occiput to dorsal. These ridges, as well as the 

 interorbital space and the area between the occipital ridges, covered with 

 scales compressed to a knife-like edge, which is provided with a single 

 series of backward-directed spines; scales on infraorbital and rostral 

 ridges bearing stellate spines or are similar to those on temporal region, 

 sides of head, and body generally ; scales on bodj' large ; 3 longitudinal 

 series between lateral line and middle of first dorsal; each scale provided 

 with a ridge bearing about 6 backward-directed spines, and from 2 to 4 



