690 CONTRTBUTIOXS TO NORTH AMERICAN ICHTHYOLOGY IV. 



diual series. L. 5 inches. Eock-pools; from Piiget Sound to Sau Luis 

 Obispo; not common. 



(Scorpwnichthys lateralis Grd. Proc. Acad. Nat. Sci. Thila. 1854, 145: Artedius lateralis 

 Girard, U. S. Pac. R. R. Surv. Fish. 70: Artedius lateralis Gunther, ii, 174.) 



hb. Top of head uneven; interorbital area concave. 



c. Head with stellate scales above. 



1047. I. BiotospilotMS (Grd.) J. & G. 



Olivaceous, often tinged with purplish, and much variegated; a black 

 bar at occiput; another from middle of spinous dorsal to the axil; one 

 under front of second dorsal extending obliquely forwards ; one under 

 posterior part of second dorsal ; one on caudal peduncle; 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. Head 

 short and broad, its vertex depressed; nuchal region with a cross-ridge, 

 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 

 oirrus; a small cirrus above posterior part of eye; a minute one on the 

 maxillary; interorbital space deeply concave, the supraocular ridges 

 elevated. Eye very large, 41 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 process, 

 l3ifid 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 2^; depth 4|. D. IX-15; A. 11 or 

 12. L. 10 inche^s. iS^orthern specimens represent a marked variety, 

 the color paler, the head more scaly, and the edge of the preopercle 

 without serrated processes. D. IX-17; A. 12. Pacific coast; abun- 

 dant at Santa Barbara and in Puget Sound; not found in rock-pools. 



{Cahjcilejndotiis lateralis Ayres, Proc. Cal. Acad. Sci. 1856, 77: Artedius nofospilotus 

 Grd. Proc. Acad. Nat. Sci. Phila. 1856, 134, and U. S. Pac. R. R. Surv. Fish. 71 : Artedius 

 noiospilotus Giiuther, ii, 174.) 



cc. Head without developed scales. 



d. Upper preopercular spine hooked, bifurcate. (ZceZwa.) 



