720 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY IV. 
on -eacli interorbital ridge; interorbital space as wide as eye; sides 
with three or four pale, well-defined, naked areas behind pectorals, the 
two anterior ninch the largest; behind these a long naked strip along 
the lateral line, colored like the rest of the body; first four spines of 
dorsal elevated, § to f length of head; the fifth much shortened; mem- 
brane deeply notched between the fifth spine and the sixth, which is 
longer than the one before it; ventrals as long as eye; pectorals reach- 
ing much beyond front of anal; first rays of soft dorsal short; the 
others gradually lengthened to near the last, the highest higher than 
the dorsal spines; caudal longer than head. Head 3^; depth 3|. D. 
V, III-23; A. 20; P. 12; Lat. 1. 50. L. G inches, i^orth Pacific, south 
to San Francisco. 
( Trachiniis cirrhosus Pallas, Zoogr Ross.-Asiat. iii, 237, 1811 : BJepsias trilohns C. & V. 
iv, 375, 182‘J; Giiuther, ii, 153; Steinrtacliuer, Ichth. Beitriige, v, 128, 1876.) 
aa. Spinous dorsal not emai’ginatc ; no naked areas. 
1106. B. bilobiis Cnv. & Val. 
Olivaceous, paler below; dorsal region with 4-5 black bars, reaching 
one-third the distance to the lateral line, and somewhat continued on 
the fins; caudal with a black bar at base, otherwise plain; pectorals 
and anal blotched with black. Body shorter and deeper than iii B. 
cirrhosus, with thicker caudal peduncle and heavier head, the bones 
less firm; snout short, obtuse; iuterorbiral space very wide, concave, 
half wider than the small eye; short occipital ridges present, besides 
several blnntish tubercles. Month broad, oblique, the maxillary reach- 
ing pupil; teeth small, distant; barbels as in cirrhosus. Head and 
body covered with prickles, larger and blunter than in cirrhosus; no 
naked patches on body; fins hjss developed than in cirrhosus; first 
five or six spines of dorsal snbeqnal, the last three abruptly shorter; 
l)ectorals longer and much broader than in cirrhosus, reaching seventh 
anal ray; caudal short, ninch shorter than head. D. IX-21; A. 18; P. 
IG. Coasts of Alaska and Kamtschatka; the specimen here described 
from Kodiak. 
(Cnv. & V.al. iv, 379, 1829: Peropus hilobus Bennett, Beechey’s Voy. Zool. Fish. 59; 
Giintlier, ii, 153.) 
379.— NAUTICISTHYS Gir.ard. 
(Girard, U. S. Pac. R. R. Surv. Fish. 1858, 74: type Blepsias oculofasciaius Girard.) 
Body rather elongate, compressed, but not elevated, the skin evenly 
covered with short, close-set, villiform prickles. Head short, strongly 
