Jordan and Evetniann. — Fishes of North America. 2575 



2940. BOGOSLOVIUS CLARKI, Jordan & Gilbert. 



Eye 4f ill head; maxillary 24. D. II, 12- ;P. 19;V. 10. Snout short, 

 slightly exceeding diameter of eye, Si^o in head; median and nasal ridges 

 very little ijrojectiug anteriorly, withont radiating spines; tip of snout 

 very little projecting beyond the mouth, for a distance not exceeding \ 

 the interspace between ends of median and nasal ridges. Suborbital ridge 

 inconspicuous, scarcely extending beyond the eye; mucous pores on head 

 prominent. Mouth large, oblique, the lower jaw included, the maxillary 

 nearly reaching vertical from posterior edge of orbit. Outer premaxillary 

 teeth slender, sharp, unequal, rather distant, not very strong, slightly 

 widened and arrow-shaped near tip, becoming very small toward angle of 

 mouth ; within this, and well separated from it, a close-set series of short 

 teeth directed inward. Mandibular teeth slender, unequal, in a single 

 series corresponding to outer series in upper jaw, slightly widening at 

 symphysis, which is not prominent. Barbel very short, less than 4^ diam- 

 eter of pupil. Eye of moderate size, equaling distance from tip of snout 

 to middle of anterior nostril, 1,\ in interorbital width. Preopercle 

 broadly rounded, the angle little produced backward, leaving a strip of 

 interopercle exposed along its entire length. Gill membranes joined to 

 the isthmus, with a narrow free edge. Gill rakers very short and thick, 

 3 -f- 12 in number, including rudiments. Dorsal beginning above base of 

 pectorals, the second spine long, filamentous at tip, 1* in head, its anterior 

 margin sharply serrate, excejit in basal third ; base of first dorsal 2* in 

 head; interspace between dorsals very short, usually less than diameter of 

 pupil. Pectorals very long and slender, equaling or exceeding length of 

 head behind snout; insertion of pectorals below upper angle of gill open- 

 ing. Outer ventral ray excessively produced, twice or more than twice 

 length of head in uninjured adults, reaching base of fiftieth anal ray or 

 beyond. Vent immediately before anal origin. Scales in a strip along 

 the back firm and very rough, none others preserved in our specimens; 

 scales with 3 to 5 sharp, radiating ridges, each ridge with several sharplj' 

 projecting spines, the posterior of which project beyond the margin of 

 the scale. Color very light gray, the vertical fins blackish posteriorly ; 

 mouth and gill cavity and peritoneum jet-black. Bering Sea. Known 

 from 4 specimens, 24 to 41 cm. long, from Albatross Station 3634, off 

 Bogoslof Island, in 664 fathoms. (Named for George Archibald Clark, 

 secretary of the Fur Seal Commission for 1896 and 1897, in recognition of 

 his researches on the mammalia of Bering Sea.) 

 Bogoslovius clarki, Jordan & Gilbert, Report Fur Seal Invest., 1898, Bering Sea off 



Bogoslof Island, in 664 fathoms. 



2950. BOGOSLOYIUS FIRMISQUAMIS (Gill & Townaend). 



Head 5 in total ; depth 6^ ; eye 4* in head ; snout 31 ; second dorsal spine 

 IHiihead; pectoral 2; ventral U; maxillary 2i. D. II, 10-126; A. 105; 

 P. 20; V. 8. Scales firmly affixed, oblong or rather short, and with con- 

 siderable exposed surfaces, w'hich have subequal radiating ridges beset 

 with numerous acute spinelets, the ridges varying from 3 to 8 in number; 

 head regularly convex in profile : rostral tubercles obsolete and iufraor- 



