103. URANOSCOPID.E. 627 



ventrals close together, thoracic, but behiud the pectorals, I, 5, the 

 middle rays longest; caudal luuate, with many accessory rays, on a 

 slender peduncle. Two species known, from the Xorth Pacific. 



{Tiachinida', genus Trichodoii Giiutlier, ii, SHO. ) 



337.— TSSat'aB€>»a>]\ Steller. 

 (Steller; Cuvier, Rc'gnc Aiiim. ii, 1829: type Trnchinus trichodou Tilesiiis.) 



Characters of the genus included above. {Oi't^, hair; of7wy, tooth.) 



9'y5. T. stelleri Cuv. & XaL—Saiul-ftsh. 



Olivaceous silvery, the back darker, with short bars and reticula- 

 tions of blackish, the latter chiefly on the head and nuchal region; be- 

 low this a longitudinal narrow white stripe, and then a narrow black 

 stripe, hiterrupted anteriorly, extending from the eye to the base of 

 the caudal; spinous dorsal with 2 lengthwise bands of black; chin and 

 snout black. Eye large, placed high, 3 in head; maxillary extending 

 to beyond its middle; the premaxillary near the level of its upper edge; 

 cheek quadrate, as deep as long. Pectorals reaching past vent, the 

 lower rays rapidly shortened, the width of its base f its length, two- 

 thirds the length of the head; anterior rays of anal less than half the 

 height of the posterior. Head 3.^; depth the same. D. XV-18; A. 9, 

 19. L. 12 inches. Coast of Alaska, south to San Francisco, burying 

 itself in the sand near the shore; not rare northward. 



{Trachimts trichodon Tiles. Mem. Ac. Peterslj. 1813, 466; Cuv. & Val. iii, 1.54; Giiu- 

 tlier, ii, 251: TricJiodon lincatus Ayres, Proc. Acad. Nat. Sci. Phila. 1860, 60.) 



Family CIIL— URANOSCOPID^. 



{The Star Gazers.) 



Body more or less elongate, conic, terete or subcompressed, widest 

 and usually deepest at the occii)ut. Scales small, smooth, adherent, 

 arranged in very oblique series, rarely wanting. Lateral line feeble or 

 obsolete. Head cuboid, partly mailed above. Eyes small, anterior, on 

 the top of the head. Mouth vertical, the mandible strong and i)romi- 

 nent; lips more or less consi)icuously fringed; teeth moderate, on the 

 Jaws, and usually on vomer arid palatines also; premaxillaries protrac- 

 tile; maxillary broad, without supplemental bone, not slipping under 

 the i)reorbital. Gill-openings very wide, continued forwards; gill- 

 membranes nearly separate, free from the isthmus, iiranchiostegals 0. 



