NEW COTTID FISHES BOLIN 37 



second spine directed backward, third spine backward and down- 

 ward, fourth spine downward and forward. Pores of head well de- 

 veloped; suborbital series very large, their vertical or lesser diameter 

 equal to 0.5 suborbital width; a few minute pores above these; pre- 

 opercular-mandibular series also large, the anterior pores paired. 



Fins in poor condition in the unique type, most of the rays broken 

 and the membrane completely gone. Origin of first dorsal directly 

 over upper end of gill opening; base of fin 2.1 in head; fin of 9 

 spines, the first two with approximate bases; first spine 1.3 in third 

 and fourth spines, which are subequal and longest, being 2.8 in 

 head. Second dorsal separated from first by a narrow interspace 



FiGDRH 8. — Stlecjicottus xenogrammus, new species, holotype (U.S.N.M. no. 102108). 



equal to about 0.4 posterior width of maxillary; base of fin 1.1 in 

 head; fin of 19 rays. Origin of anal about under second dorsal ray, 

 its jDOsterior end under second ray from end of second dorsal; base 

 of fin 1.3 in head; fin of 17 rays. Pectoral base 3.4 in head; fin of 

 18 rays. Base of pelvics very slightly behind lower end of pectoral 

 base. Anus advanced from anal origin about 0.25 distance to pelvic 

 base; located immediately in front of a very short, bluntly conic, 

 genital papilla. 



Head behind the eyes and dorsal to the midlevel of the posterior 

 orbital border covered with minute scales, a few scattered elements 

 extending anteriorly throughout the interorbital space and occurring 

 sparsely on the upper portion of the eyeball; the scaled area of 

 head continuous with a broad band of slightly larger scales covering 

 the entire dorsal surface of the body; similar scales form a streak 

 below the lateral line extending from just behind the axilla to base 

 of caudal and occupying approximately the dorsal 0.6 of the region 

 between lateral line and base of anal. These scales are in the form of 

 small oval plates bearing a single spine posteriorly, which is rarely 

 bifurcated. Lateral line armed with about 30 scales, which are in 

 the form of short incomplete tubes, the outer part broken by a wide 

 longitudinal slit, a single moderately strong spine at the upper 

 posterior angle and another at the lower posterior angle. The arma- 

 ture of the lateral line extends almost to the end of the anal fin ; no 



