2574 Bullctm //, United States National Museum, 



distance from its base to front of anal; scales rather small, 10 or 11 in a 

 series between lateral line and origin of second dorsal or middle of first 

 dorsal; scales on sides very thin and iiexible, readily deciduous, each 

 furnished with low diverging ridges, usually 3 in number, bearing lew 

 minute spinules, and projecting but little beyond the margins of the 

 scales; entire head, including snout and mandibles, invested with much 

 smaller scales irregularly imbricated, those on the opercles marked simi- 

 larly to those ou sides, the others usually each with a single median ridge 

 terminating in a spinous point; no naked spots or pits on head or between 

 ventral fins; a small narrow area behind and below axil of pectorals. 

 Color light grayish, darker on belly and head; mouth, gill cavity, and 

 peritoneum black; lateral line black; dorsals aud veutrals dusky ; anal 

 lighter, edged with blackish; pectorals black. Bering Sea to Oregon. 

 Specimens have been taken at Albatross Stations 3071, 3074, and 3075, in 

 depths of 685 to 877 fathoms, off the coast of Oregon, and from near Bogos- 

 lof Island in Bering Sea in 664 fathoms. It is a large, firm-tleshed species, 

 easily recognized, (pectoralis, pertaining to the pectoral.) 



Macrurus {Malacocephalus) pectoralis, Gn.BERT, Proc. U. S. Kat. Mus. 1891, 563, off the 



coast of Oregon. (Coll. Dr. Gilbert.) 

 Macrurus (Xematominis) magnus,* Gill &, Townsend, Proc. Biol. See. Wasb., xi, 1897 



(Sept. 17, 1897), 2.34, Bering Sea, southwest of Pribilof Islands. (Types, No. 48770 and 



48"71, IT. S. Nat. Mus. Coll. A Ihatross. ) 

 Albatrossia pectoralis, Jordan & GUiBKET, Report Fur Seal Invest., 1898. 



I002. BOGOSLOVIUS, Jordan & Evermann, new genus. 



Hogoslovi/us, Jordan & Evermann, new genus (clarki). 



This genus is close to Chalinura, from which it is distinguished by its 

 dentition, having the teeth in the upper jaw in 2 series, the outer slender 

 and sharp, slightly arrow-shaped; those of the inner small, close set, 

 replacing th(^ villiform band of Chalinura. Scales excessively rough; ven- 

 tral filament produced ; dorsal spine filamentous, sharply serrate; dorsal 

 fins close together; pectorals inserted below upper angle of gill opening. 

 Deep seas. (Named for the volcanic island, St. John Bogoslof, in Bering 

 Sea, near which the typical species was dredged.) 



a. Ventrals mucb longer tban head, reaching far beyoud front of anal. claeki, 2949. 

 aa. Ventrals shorter tban head, scarcely reaching front of anal. fiemisquamis, 2950. 



* We have examined the type and cotypes of Macrurus (Nematonurus) inagmis, Gill & 

 Town.send. aud tind tliem to agree fully with Albatrossia pectoralis (Gilbert). The type 

 may be redoscribed as follows : Head 5J ; depth 7i ; eye 4;! in head ; snout 4^ to 4 J ; maxillary 

 2J; pectoral 2 in be.ad; ventml with short filament, 2J in liead. Mouth large, with lat- 

 eral cleft. Dorsals well separated, the inters))ace not i base of first dorsal; long dorsal 

 spine smooth, or with 1 or 2 rouglinesses uear Its tip, its length 3| in head ; second dorsal 

 low; pector.al inserted low, below angle of opercle. Scales moderately large, readily 

 deciduous, decidedly oblong or long, with a small exposed surface which is beset with 

 about 5 radiating ridges with consi)icuou8 spinigerous ridges on dor.^al surface, l)ut not 

 armed at tip; luad ri-i;iil;irlv conical; snout rather long, projecting A its lengtli beyond 

 mandible; tubfrclis IVtlily developed, plain, and continuous from 3 parallel ridges ; infia- 

 orbital flat, with the crest rather nearer the orbit tlian its lower margin ; its entire surface 

 scaly ; teeth in the upper jaw biserial or triserial in front, tlie outer series stronglj- hooked, 

 the inner series considerably smaller and well sejiarated from the outer series ; an irregular 

 series between in the typo specimt>n; teeth in lower jaw uniserial or irregularly biserial. 

 Three specimens, the largest (type of Jll. magnus) 43 inches long. 



