2022 Bulletin 47, United States National Museum. 



-elevated and differentiated than in Hemitripterus. Sides dark gray, 

 intermingled with whitish reticulations. Type 2f inches long. North 

 Pacific and Bering Sea, in deep water. (Bean). Dr. Gilbert notes 

 also- "Several small specimens were secured in Bering Sea, to the north 

 of Unalaska Island, depths 70 to 121 fathoms. They agree with the 

 types in having hut 14 dorsal spines, the first 4 of which are not noticeably 

 differentiated. The second dorsal contains 11 or 12 rays, and the anal fin 

 13 The last 2 rays of the anal fin are approximated at base, biit do not 

 evidently constitute a divided ray." (marmoratus, marbled.) 



Hemitripterus marmoratus, BEAN, Proc. U. S. Nat. Mus. 1890, 43, off Sitkalidak Island, 

 at Albatross Station 2855 in 69 fathoms ; GILBERT, Kept. U. S. Fish Comm. 1893 

 (1896), 410. 



? Cottus villosus, * PALLAS, Zoogr. Ross.-Asiat., in, 129, 1811, Cape of Kronok and mouth 

 of the Itscha ; after STELLER ; CUVIER & VALENCIENNES, Hist. Nat. Poiss., iv, 196, 1829. 



753. HEMITRIPTERUS, Cuvier. 

 (SEA RAVENS.) 



Hemitripterus, CUVIER, Kegne. Anim., Ed. 2, vol. 2, 164, 1829 (americanus) . 



Body moderately elongate, scaleless, but the skin covered with prickles 

 and bony protuberances of various sizes and forms. Head large, with 

 numerous bony humps and ridges and fleshy slips above ; orbital rim much 

 elevated, the interorbital space deeply concave; a depressed area at the 

 occiput, behind which are 2 blunt spines on each side. Mouth very wide ; 

 jaws, vomer, and palatines with broad bands of teeth; no slit behind last 

 gill : gill membranes broadly united, free from isthmus ; preopercle with 

 stout, blunt spines ; suborbital stay very strong, forming a sharp ridge. 

 Spinous dorsal much longer than the soft part, of 16^to 18 spines, of which 

 the first 2 are the highest, and the fourth and fifth shorter than the suc- 

 ceeding ones, the fin thus deeply emarginate; pectoral fins very broad, 

 much procurrent ; ventrals I, 3. Large fishes of singular appearance, in- 

 habiting the North Atlantic and Pacific. Dr. Gill makes of them a dis- 

 tinct family on account of the great length of the spinous dorsal and the 

 peculiar development of the myodome. The genus is, however, related 

 to Blepsias and Nautichthys, and the spinous dorsal is as long in Jordania 

 as in Hemitripterus, while the two genera stand as extremes in the Cottoid 

 group. (?),uz , half; rpel$, three; Ttrspor fin.) 



a. Dorsal spine about 16; the upper surface of head moderately uneven. 



AMERICANUS, 2391. 



aa. Drfrsal spines 18; top of head excessively uneven. CAVIFRONS, 2392. 



* Some unknown fish allied to Ulca marmorata is Cottus villoms. Pallas. Size, form, and 

 dimensions ot Oncocottus quadricornis, the same intestines, but with a disagreeable 

 smoke-like odor Its skin is soft, loose, sand-colored, covered with villosities like a calf s 



