796 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY - IV. 



closely joined ; caudal short and slender; tail diphycercal, truncate at 

 "base of caudal; anal papilla large (in J 1 ); stomach large, with two short 

 pyloric cnva. (:?, two; */;//, thread; ;>^?, fish.) 



a. Head nearly or quite scaleless. (Halias* Ayrcs.) 



1225. D. Biiargaiiatms (Ayres) Gthr. 



Keddish brown; fins broadly edged with bright rose red. Head with 

 traces of very rudimentary scales sunken in the skin ; eye well forward, 1.] 

 in snout, 7 or 8 iu head ; maxillary reaching beyond eye a little less than 

 half length of head; teeth of jaws snbequal r iu broad bands; palatine 

 teeth in a short band, shorter than eye. Fin-rays slender, imbedded 

 in skin; pectorals moderate, a little more than half length of head; 

 ventrals half length of head ; nape nearer origin of dorsal than tip of 

 snout; vent slightly behind middle of body; caudal as long as eye and 

 suout; a conspicuous pore above tip of maxillary; two pores at chin ; 

 anal papilla without horny appendages; lower lip with a fringe of 

 minute cirri. Head 4 in length; depth about 0. D. about 80; A. 

 about ()."). Coast of California, rather rare ; in deep water. 



(Broxmiux marginatim Ayres, Proc. Cal. Acad. Nat. Sci. i, 13. 1854: Halias margi- 

 nal u* Ayrcs, Proc. Cal. Acad. Nat. Sci. 1860, 52', Giintlier, iv, 375: Brosmophyds mar- 

 yinatus Gill, Proc. Acail. Nat. Sci. Phila. 1861, 168; 1863, 253.) 



436. ONOSt Ayres. 







Rocklings. 



(Motella Cuvier: MolveUa Kaup: Rhinoncmiis Gill: Ciliata Couch and Coitchia Thomp- 



son, young forms.) 



(Risso, Hist. Nat. d'Eur. Merid. iii, 21-1, 182G: type Onos iiutxti'lla kisso= G'd 

 nttiix HI. & Schn.) 



Body rather elongate, covered with very small scales; head more or 

 less depressed; lower jaw included; chin with a barbel; snout with t\\o 

 to lour barbels, one on each anterior nostril; teeth in bands on jaws and 

 vomer; none on palatines; some of the teeth in upper jaw sometimes 

 enlarged or canine-like; dorsal tins two, the anterior composed of small 

 fringe-like rays concealed in a groove, in front of these a single long 

 ray; second dorsal long; anal similar; caudal tin rounded or lanceo 



*Ayivs. I'ror. Cal. Acad. Nat. Sci. ii, 52, I8(i0: type J!n>t<inittn inurtiiiiatuK 

 (<U?, I he sea.) 



t \V- <li> nut adopt the earlier name (iitiili-f>i>mirii>< of Ralines(|tie ( because \ve iind 

 little evidence that the rouh li^ure of Kondelet, on which Ciiidnijtxarux 



e was founded, was intended for a species of OHOX rather than of 

 Hloeh A: Schneider is a lieterogeueous groiii). including species of 

 of wliich j;-enus it may l>e considered a synonyin. 



