THE FISHES OF ALASKA. 



285 



80. Sebastodes swifti Evermann & Goldsborough, new species. 



Head 2.05 in body; depth 3.1; eye 3.2 in head; snout 4.2; maxillary 2; mandible l.S; interorbital 

 about 2 in eye, G in head; dorsal xm, 13; anal m, 7; scales 42 in oblique series, about 32 pores. 



Body oblong-ovate, compressed, the dorsal and ventral contours gently curved, the dorsal sloping 

 rather gently botb ways from the nape; caudal peduncle rather slender, its least depth 1.15 in eye; 

 head large, bluntish; interorbital space rather narrow, Bomewhat concave, a pronounced ridge inside 

 of each supraocular ridge; nasal, preocular, supraocular, postocular, tympanic, parietal, nuchal, and 

 coronal spines all present, rather strong; preorbital narrow, with two broad Bat lobes on the upper 

 half; two broad flat humeral spines; . opercular spines strong, BOmewhat diverging: preopercular spines 

 moderately strong, the second longest, the lirst. second, and third projecting backward, but somewhat 

 diverging, the fourth and fifth short and blunt, projecting downward and backward, all about equally 

 spaced; teeth in rather narrow villi form bands on both jaws and palatines, a triangular pat eh on vomer; 

 the band of teeth on upper jaw broadening to rounded lobes anteriorly, Leaving a small, naked interspace 

 :it the symphysis into which the symphyses] knob of the lower jaw lit-, the tongue small, short, and 

 broadly rounded; maxillary reaching vertical at posterior edge of pupil, its width at the tip 2 in eye; 

 lower jaw scarcely projecting; the mouth somewhat oblique; premaxillary on a level with lower edge 

 of pupil; gillrakers 8+21, rather long and slender, the longest about 2 in eye. Dorsal long, its origin 



Fig. 36. — Sebastodes swifti Evermann A Goldsborough, new species. Type. 



a little in front of the rounded opercular flap, the distance from tip of snout to origin of dorsal equaling 

 the length of head; base of dorsal about 1.8 in length of body: dorsal spine- moderately strong, curved, 

 the longest about equaling distance from tip of snout to middle of pupil; dorsal rays somewhat shorter; 

 not eh between spinous and soft dorsal not pronounced; second ana] spine strong, curved, about equal- 

 ing the third in length; ventrals short, not reaching vent, pectorals long, reaching vertical at vent; 

 scales rather adherent, finely ctenoid; top of head, opercles, cheek, and maxillary scaled; mandible 

 naked. 



Color in alcohol, pinkish-brown, with indistinct, dusky, black patch above lateral line; cheek 

 somewhat dusky, a black patch on upper edge of opercle and a smaller one at lower end; axil black; 

 dorsal, anal, caudal, and ventrals tipped with black: inside of mouth pale; under side of opercle 

 posterior to pseudobranchios with a black patch. 



This species appears to be related to Sebastodes arameri, from which it differs in the narrower and 

 more concave interorbital, the stronger ridges on the head, the stronger cranial spines, the presence 

 of coronal spines, the smaller eye, the longer maxillary, the less strongly arched body, and the fewer 

 pores in the lateral line. 



