2014 Bulletin 4.7, United States National Museum. 



Oligocottus macvlosus, GIRARD, Proc. Ac. Nat. Sci. Phila. 1856, 153, Tomales Bay (Coll. E. 

 Samuels); San Francisco (Coll. Lieut. Trowbridge) ; Fort Steilacoom (Coll. Dr. G. 

 Suckley); GIRARD, U. S. Pac. R. R. Surv., x, Fish., 56, 1858; JORDAN & GILBERT, Syn- 

 opsis, 718, 1883. 



Centridermichthys maculosus, GUNTHER, Cat., n, 171, 1860. 



2382. OLIGOCOTTUS BOREALIS, Jordan & Snyder. 



Head 3i; depth 4|; orbit 4 in head; snout 4; maxillary 2. D. VIII or 

 IX-16 or 17 ; A. 12 to 14; P. 14 ; highest dorsal spine 3 ; dorsal ray 2 ; cau- 

 dal ray 1; first anal ray, male 1-^-, female 3; ventrals If; caudal peduncle 

 3; pectorals 3 in length. Body compressed, elongate; back somewhat 

 elevated, deepest below middle of spinous dorsal. Head almost as wide as 

 long, tapering from behind to the somewhat pointed snout; profile of 

 head rounded above, straight below ; mouth terminal, nearly horizontal ; 

 maxillary extending to vertical through posterior part of pupil; lower 

 jaw included; jaws, vomer, and palatines with villiform teeth; snout as 

 long as orbit; eye high in head; interorbital space narrower than width 

 of orbit, its concavity angular; opercle with a triangular flap ; angle of 

 preopercle produced into a forked spine, which is covered with skin, 

 except on the sharp points; prongs of preopercular spine as long as 

 orbit; nasal spines prominent; the long premaxillary processes forming a 

 sharp ridge between the latter; branchiostegal membranes forming a fold 

 across the isthmus ; gills 3-, the slit behind the fourth arch much reduced ; 

 pseudobranchue present; gill rakers represented by a few protuberances 

 on the arch. Skin smooth; filaments on free end of maxillary, on infe- 

 rior edge of preopercle, and first dorsal to the bases of the pectoral fins; 

 also a row of filaments extending along the supraorbital crest, over the 

 back of the head and along the lateral line for about the length of the 

 body, the filaments usually paired, i. e., 2 grow from the same place; 

 anal papilla prominent; large mucous pores scattered about the top and 

 sides of head ; pores of lateral line 36 to 40. Dorsal fins 2, separate ; first 

 dorsal 4 in head and body, curving from distal end of first spine to posterior 

 part of base; spines rather feeble; second dorsal 2 in head and body, a 

 little higher than first, its middle rays longest ; anal fin about 3 in head 

 and body; in the male the first and second rays longest, the third, fourth, 

 and fifth each a little shorter than the preceding one, the last shortest ; in 

 the female the first ray is the shortest; caudal fin somewhat rounded; 

 pectoral rays below the sixth ventrally free from the connecting mem- 

 brane for a portion of their length; ventral fins reaching to vent, in some 

 specimens to anal. Color, usually reddish brown, varying to gray, in- 

 tense green or crimson, according to surroundings, the colors developed 

 in the presence of similarly colored algre; dorsals, pectorals, and caudal 

 barred; anal sometimes barred; front of spinous dorsal with an ocellated 

 black spot. Pacific Coast, from Prince William Sound to Oregon ; the types 

 ollected in tide pools at Neah Bay, Puget Sound, by Mr. E. C. Starks, 

 )thers were collected at Neah Bay by Mr. Henry St. Glair, and still others in 

 Departure Bay, Vancouver Island, by Dr. C. H. Gilbert. This species is 

 losely related to Oligocottus maculosus, but maybe distinguished from the 

 latter by having fewer filaments on the head and body, an ocellated spot 



