776 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY - IV. 



418. IVOTOGRAITUIUS Bean. 



(Bran, Proc. U. S. Nat. Mus. iv, 147, 1881: type Stichceua rothrocki Bean.) 



This genus differs from Sticlucus in the presence of a single lateral 

 line along the base of the dorsal fin. It is known, however, from im- 

 mature examples only. The caudal lin is emargiuate, a character 

 unusual in this family. (>oiror, back; ^a,a/ir y , line.) 



1185. IV. rothrocki Bean. 



Talc brown, with 3 series of paler spots, those of the median series 

 usually longer and narrower than the others; a series of about 10 pale 

 spots oil median line of back, the anterior as large as eye; a daik 

 stripe around snout to end of opercle; a very narrow dark stripe 

 along base of dorsal, its lower margin seeming to mark the course of 

 the superior lateral line. Body covered with minute scales; lateral 

 line undeveloped (in the immature specimens known), apparently run- 

 ning close to outline of back. Teeth in the jaws, and apparently on 

 vomer and palatines. Gill-membrane deeply cleft, free from the isth- 

 mus. Eye 4 in head, as long as the subconical snout; maxillary 

 reaching front of pupil. Dorsal beginning above upper axil of pec- 

 toral: like the anal, connected by a low membrane with the caudal; 

 caudal emarginate behind; ventrals short, close together, 3 in head, 

 and not half as long as pectorals; longest dorsal spines half height of 

 body. Head 4.J; depth G. B. G. D. XLVIII; A. I, 34; V. I, 4; P. 15; 

 C. 21. Northern Alaska and Siberia. 



(Stichceual rothrocki Ik-iiu, Proc. U. S. Nat. MILS iv, 1-lfi, 1881.) 



419. JLUIWPENUS 



(Lcptof/n n inline Ayrrs: Lcptoclinua and Anisarchua Gill.) 

 (Hcinliunlt, Dansk. Vidcnsk. etc. 1837, 110: type lilennius lumpcnits Fabr..) 



I'.ody greatly elongate, moderately compressed, covered with small 

 scales; lateral line indist iuct or obsolete. Headlong; snout short; no 



cirri; e\e.-, large, placed high; month moderate, with a single row of 

 rather small, conical tee! h on each jaw; teeth present on voiner or pal- 

 atines; gill- openings prolonged forward below, very narrowly united 

 anteriorly to the isthmus, not forming a tree fold across it. Dorsal 

 c ..... posed of numerous, sharp, flexible, rather high, spines; caudal fin 

 long; anal man\ rayed; pectorals large, more than half lengt h of head; 

 Ycntrals well developed, jugular, I, 3 or 1,4; intestinal canal long; py- 

 loric circa present; no air bladder. Chiefly herbivorous. Northern 

 is. ( LtuitjK'ii, a Dani>h name of some similar li.>h.) 



