107. COTTIDiE LEPTOCOTTUS. 
713 
minute rough scales, causing it to appear sharply and finely serrate. 
Gill-membranes uuited, free from the isthmus; a distinct slit behind 
last gill. Dorsal spines rather high and slender ; ventrals apparently 
1,3. Arctic seas. (r/j'^Aa, Trigla ; appearance.) 
1095. T. pingfcSi Reinb. 
Olivaceous, somewhat variegated with darker; fins barred; a series 
of dusky spots along sides; an ocellated black spot on posterior i)art 
of spinous dorsal. Head very slender; eye large, ])laced high, but 
lateral; preopercular spines short; maxillary extending to below mid- 
dle of orbit; nasal spines sharp. Ventral fins rather short; pectorals 
extending to front of anal; tail very slender, its diameter less than the 
ej-e; anal papilla large. Head 3^. D. IX-21; A. 21. Alaska to Green- 
land and Cape Cod. 
(Reinhardt, Vid. Selsk. Natur. v, lii; Giiutber, ii, 173: Triglops pleurostictus Cope, 
Proc. Acad. Nat. Sci. Phil. 1865.) 
373.— I.EPTOCOTTUS Girard. 
(Girard, Proc. Acad. Nat. Sci. Phila. 1854, 130: type Leptocotius armalus Grd.) 
Body elongate, depressed, covered with perfectly smooth skin. Head 
depressed, oblong, not very broad, without cirri; lower jaw included; 
suborbital stay narrow; teeth on jaws, vomer, and palatines. Gill- 
membranes rather narrowly joined to the isthmus, not forming a fold 
across it; a slit behind fourth gill; preopercular spine strong, with two 
or three points hooked upwards. Dorsal fins separate; the spinous 
dorsal short and small, entire; ventrals I, 1. Pacific coast. (Ai-ro?, 
slender; zorroc, Cottus.) 
1096. E. arniatus Grd. 
Grayish olive above, becoming abruptly white and silvery below; 
sides creamy; pectoral fins creamy yellow, with five or six black cross- 
bars; spinous dorsal dusky, with an ink-like blotch on tip of last rays, 
and an oblique white band below; soft dorsal dusky, with several ob- 
lique white bauds; caudal banded; ventrals and anal plain. Head long 
and depressed; mouth large, the maxillary reaching beyond eye; inter- 
orbital space broad, scarcely concave; nasal spines concealed; top of 
head flatfish, covered with rugose skin; upper preopercular spine with 
three or four spinules hooked upwards; suborbital stay slender, not 
reaching preopercle; eye very small, less than interocular width, 
in head; lateral line comidete; skin everywhere smooth; no prickles 
nor cirri. Dorsal spines very slender and low; pectorals reaching 
