Jordan and Evermann. Fishes of North America. 1921 



tinned forward on top of head, meeting its fellow in a V-shaped patch 

 filling posterior portion of interorbital space; similar plates on snout and 

 opercle, the head and body otherwise naked. In cross section the plates 

 mark an abrupt angle, the back being flat, the sides vertical. Dorsal 

 spines slender, the 2 fins well separated; rays of soft dorsal and anal 

 very slender, rather long; caudal truncate or rounded, f head; pectorals 

 with 18 or 19 rays, reaching to or nearly to vent; anal papilla very long 

 in males, more than 1 head. Color light olivaceous, with a series of 

 elongate, narrow, brown streaks along middle of sides, the latter also 

 finely punctate with black; a dark streak in front of eye; fins trans- 

 lucent, the dorsals, pectorals, and caudal with some black spotting, which 

 shows a tendency to form bars; anal and ventrals white. Length 5 to 6 

 inches. Coasts of Oregon and Washington, the types from depths of from 

 43 to 77 fathoms. Also found in Puget Sound by Mr. Starks. (Gilbert.) 

 (asper, rough; asprellus, a diminutive from Aspro, a genus 'of Pertidce.) 



Radulinus asprdlus, GILBERT, Proc. U. S. Nat. Mus. 1890, 88, off Oregon and Washing- 

 ton, at Albatross Stations 3046, 3057, 3058, 3059 (Type, No. 43096) ; JORDAN & STARKS, 

 Proc. Cal. Ac. Sci. 1895, 805, pi. 81. 



719. STELGISTRUM, Jordan & Gilbert, new genus. 



Stelgistrum, JORDAN & GILBERT, Fishes of Bering Sea, in Fur Seal Invest, for 1896, 1897 

 MS. (stejnegeri). 



Shaped as in Hcmilcpidotus, which it resembles in appearance but with 

 which it is not closely related. Gill membranes widely joined across the 

 throat, wholly free from the isthmus. Teeth on jaws and vomer, none on 

 palatines. No slit or pore behind last gill. Upper preopercular spine 

 simple, gently upcurved, 3 short spines below it. No opercular rib or 

 spine. Nasal spines short and strong. Vertex without spines or ridges 

 and without long tentacles. Spinous dorsal without anterior notch, the 

 vertical fins all few-rayed. A series of plates along lateral line and a band 

 along the back which merges anteriorly into the mass of minute plates 

 covering top and sides of head. Ventrals I, 3, without seta3. Vent im- 

 mediately before origin of anal, (tfrekyidrpov, scraper.) 



2299. STELGISTRUM STEJXEGERI, Jordan & Gilbert. 



Head 2| in length; depth 3|. D. IX, 17; A. 13; P. 16; caudal with 

 9 divided rays ; lateral line with 40 plates ; lower series of dorsal band 

 containing 35 to 38 plates. Head narrowly wedge-shaped, tapering 

 upward; width below eyes equaling length of snout and | eye; width 

 at preopercles equaling depth at occiput. Mouth large, slightly oblique, 

 the wide maxillary reaching vertical behind pupil, equaling length of 

 snout and eye, length of head. Teeth small, uniform, in narrow 

 bands on jaws and vomer; palatines toothless. A deep naked trans- 

 verse groove between nasal ppines and front of orbits; orbital rims 

 moderately elevated, the interorbital space very narrow, channeled; 

 occiput flat or slightly concave, angulated along lines running backward 

 from orbits, but without spines or ridges ; a slender filament above each 



