196 HELLER AND SNODGRASS 



but little back of tip of fifth in elevated fin ; in closed fin fifth spine 

 reaches beyond ninth ; eleventh spine shortest ; twelfth and thirteenth 

 successively a little longer, apparently a part of the soft dorsal. Rays 

 of soft dorsal abruptly longer than the last dorsal spines, the fourth 

 and fifth longest, equal to the sixth spine ; fin decreases slightly 

 in height posteriorly, last ray one half of fifth. Depth of caudal 

 peduncle a little less than one third of head ; caudal fin gently rounded, 

 middle rays two in head. First anal spines short ; second slightly 

 longer than maxillary, not specially thickened ; first and second soft 

 rays of anal longer than second spine ; distal border of elevated fin 

 perpendicular ; last ray less than one half of first in length. Ventrals 

 and pectorals same length, equal to length of head behind eye. Dis- 

 tance between insertion of ventrals and first anal spine one third greater 

 than depth of body. 



Entire body scaled except jaws and region between rami of lower 

 mandible. Soft dorsal and anal with scaly sheaths along their bases. 

 Scales on snout minute. Lateral line straight anteriorly, over tip of 

 pectoral bent somewhat downward, from here to caudal peduncle 

 slightly convex downward ; beyond this straight, continuous to edge 

 of caudal fin. Snout with a large slit-like pore on each side, about 

 four very small pores above and below each of these. Three pores 

 at symphysis of lower jaw. 



Coloration in Life. Above uniform dark brown, below paler 

 silvery-brown; center of each scale on sides of body dusky -brown, 

 forming conspicuous narrow, dark longitudinal stripes ; stripes below 

 lateral line undulatingly horizontal, wider than those above, the upper 

 ones cut off at middle of body by deflexure of lateral line; stripes 

 above lateral line anteriorly running backward and upward, posteriorly 

 horizontal, extending to end of caudal peduncle; fins plain brown. 



Taken at Charles and Seymour Islands. 



The following table gives comparative measurements of Corvula 

 eurymesops, and of one specimen of C. macrops in the Stanford 

 University collection from Mazatlan. 



