156 PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 



pectoral ; dorsal and anal edged with yellowish anteriorly ; ventrals with 

 considerable light yellow. 



This species is known to us from upwards of a hundred specimens 

 taken in sweep-nets between the Golden Gate and Point Eeyes. 



All the specimens are small, ranging from 8 to 12 inches in length. 

 Its abundance, in the San Francisco market at least, seems to be con- 

 fined to the month of April. 



Its relations are not intimate with the two species of this genus pre- 

 viously known — H. platessoides of the North Atlantic and H.jordcmi of 

 the North Pacific. From both it differs in the elongate form, much 

 larger scales, fevv^er fin rays, smaller teeth, «&c. With H. jordani, which 

 inhabits the same waters, it agrees in scarcely any respect, excepting 

 in the characters of the genus Mijjpoglossoides, i. e., the large mouth, 

 conical teeth, ctenoid scales, simple, straight, lateral line, convex caudal, 

 dextral eyes, &c. 



Table of measurements. 



Extreme length, in inches 



Length to base of caudal, in inches ^^t-. 100. . 

 Body : 



(Greatest height 



Least height 



Length of caudal peduncle 



Head: 



Greatest length 



Width of interorbital area 



Length of snout 



Length of orbii 



Length of maxillary 



Length of mandible 



Length of longest giU-raker 



Dorsal : 



Distance from snout 



Greatest height 



Anal : 



Distance from snout 



Height at longest ray 



Caudal: 



Length of middle rays 



Length of outer rays 



Pectoral: 



Right side, length 



Left side, length 



Ventral, right side, length 



Dorsal rays 



Anal rays 



Scales in lateral line 



Scales in transverse row above lateral line 

 Scales in transverse row below lateral Hue 



Exilis. 



Jordani. 



San Francisco, Cal., April 21, 1880. 



