GOO CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY IV. 
(liiial series. L. o iiiclies. Eock-pools; from Puget Sound to Sau Luis 
Obispo; uot common. 
(Scorpcvnichthys lateralis Grd. Proc. Acad. Nat. Sci. Pliila. 1854,145: Arledius lateralis 
Girard, U. S. Pac. R. R. Surv. Fish. 70: Arledius lateralis Giirither, ii, 174.) 
hb. Top of head uneven; interorbital area concave. 
c. Head with stellate scales above. 
1047. I. BiotospilotllS (Grd.) J. & G. 
Olivaceous, often tinged with purplish, and much variegated; a black 
bar at occiput; another from middle of spiuous dorsal to the axil ; one 
under front of second dorsal extendiug oblitpiely forwards ; one under 
posterior iiart of second dorsal; one on caudal iiednncle; bars and in- 
terspaces everywhere finely reticulated and mottled; lower parts dusky, 
with brassy tinge, often with dark reticulations around whitish spots; 
branchiostegals blackish, with yellow tinge; fins all variegated, the 
lower fins generally dusky; a black spot ocellated with orange between 
first and second dorsal spines, sometimes a duller one between third 
and fourth; a large black spot between sixth and eighth spines. LTead 
short and broad, its vertex depressed; nuchal region with a cross-ihlge, 
in front of which is a quadrate depression; two blunt tubercles behind 
each eye, armed at tip with small spines; behind these two others with- 
out spines, on the occipital ridges; each of these spines with a small 
cirrus; a small cirrus above posterior jiart of eye; a minute one on the 
maxillary; interorbital space deeply concave, the supraocular ridges 
elevated. Eye very large, 4| in head. Mouth moderate, broad, the 
maxillary extending to beyond the pupil, its length nearly half that of 
the head; suborbital stay strong; preopercle with a strong ]wocess, 
bifid at tip, and with one or more upward-directed spines; below this 
three blunt serrated processes or multifid spines; vertex, temporal re- 
gion, interorbital space, and opercles covered with small, detached, 
stellate scales, strongly spinous at their edges; these smaller than the 
scales of the dorsal band. Head depth 4f. I). IX-15; A. 11 or 
12. L. 10 inches. Northern specimens represent a marked variety, 
the color paler, the head more scaly, and the edge of the preopercle 
without serrated processes. D. lX-17; A. 12. Pacific coast; abun- 
dant at Santa Barbara and in Puget Sound; not found in rock-pools. 
{CaJucilepidotus lateralis Ayre.s, Proc. Cal. Acad. Sci. 1856, 77: Arledius notospilotus 
Grd. Proc. Acad. Nat. Sci. Phila. 1856, 134, aud U. S. Pac. R. R. Surv. Fish. 71 : Artedias 
noios 2 }ilotus Giinther, ii, 174.) 
CO. Head witliout developed scales. 
d. Upper jircopercular spine hooked, bifurcate. (Icelus.) 
