36. HEMILEPIDOTUS. 173 



35. TRIGLOPS. 



Triglops, Reinh. Vid. Selsk. Natur. og Math. Afh. v. p. Hi ; Kroyer, 

 Naturhist. Tidsskr. 1844, i. p. 260. 



Head of moderate size, subcompressed, naked, with the praeoper- 

 culum armed ; tail elongate, slender, subcorneal. Body with a series 

 of bony plates along the dorsal fins, and with oblique and separate 

 series of small and ciliated scales beneath the lateral line. Lateral 

 line with osseous tubercles. Two separate dorsals ; ventrals tho- 

 racic, with five soft rays ; no pectoral filaments. Yilliform teeth in 

 the jaws and on the vomer, none on the palatine bones. Seven 

 branchiostegals. Air-bladder none ; pyloric appendages in moderate 

 number. 



Coast of Greenland (?). 



1. Triglops pingelii. 



Reinhardt ^- Kroyer, 11. cc. 



D. 12 I 24. A. 24. V. 1/5. 



The diameter of the eye is one-third the length of the head, longer 

 than the snout, and thi-ee times the space between the orbits. Prae- 

 operculum with four spines, two at the posterior and two at the in- 

 ferior margin. The length of the head is nearly one-fourth of the 

 total. Brown above, with blackish spots ; the pectoral with dark 

 cross-bands. Male vsdth a very large anal papilla. 



36. HEMILEPIDOTUS. 



Hemilepidotus, Cuv. ^- Val. iv. p. 275. 



Head not depressed, naked ; praeoperculum armed ; body with 

 longitudinal bands of scales, alternating with naked stripes. One 

 dorsal, divided by a notch into a spinous and soft portion ; ventrals 

 thoracic, and, like the pectorals, not enveloped in a thick membrane. 

 No pectoral filaments. Yilliform teeth in the jaws, on the vomer 

 and the palatine bones. Six branchiostegals. Air-bladder none ; 

 pyloric appendages in small number. 



Sea between N.E. Asia and N. America. 



1. Hemilepidotus trachurus. 



Cottus hemilepidotus, Tiles, in Mem. Acad. St. Petersb. iii. p. 262. p. 11. 



trachurus, Pall. Zoogr. Ross. iii. p. 138. pi. 25. 



Hemilepidotus tilesii, Cuv. 8f Vol. iv. p. 276. pi. 85 ; Cuv. Rigne Anim. 

 III. Poiss. pi. 22. f. 2. 



^- Ti- ^- Ti- ^^''- Pylor. 5. 



Head without skinny flaps. A band of rough scales, formed by 

 four series, along the base of the dorsal fin, another broader one above 

 and below the lateral line. 



Coast of Kamtschatka ; Kuriles. 



