774 



PROCEEDIXaS OF THE NATIONAL MVSEVM. 



VOL. XXX. 



backward, and, ineetint^ its opposite fellow in a point directed down the 

 throat, incloses a triangular area at front of mouth. The teeth of the 

 iiuier row sot transversely to those of the outer row. On the lower 

 jaw the inclosed triangular area is much smaller than that in the upper 

 jaw. Nostrils situated one diameter of e^'e in front of e3'e. 



Pectoral reaching to witliin three-fourths of a diameter of eye of 

 base of ventrals. Origin of dorsal midway ))etween tip of snout and 

 one scale ])ehind base of adipose dorsal. Fourth dorsal ra}' longest, 

 forming the point of fin; each dorsal ray with a thin lateral dermal 

 tlap extending nearly its whole length. Adipose dorsal inserted mid- 

 waj'^ between base of dorsal and tips of median caudal raj^s; its base 

 very short; its tip extending twice its height ))eyond its l)ase poste- 

 riori}'. iSecond anal ra}' the longest, 3 times the length of the last ray; 

 posterior edge of anal somewhat lunate. Length of ventral equal to 

 tliat of pectoral; its ti}) reaching a little more than two-thirds of the 

 distance from base of its first ray to front of anal. 



Fig. ."i. — I'RdriiiioDrs caudifasci.^ttts. 



Surface of scales finely granular; 15 in a median row from front 

 of dorsal to occiput; '^^ in an oblKjue row from front of dorsal to lat- 

 eral line; iSh from front of anal to lateral line. 



Sides with alternate dark and silvery stripes following the rows of 

 scales. Lateral line occupies a silvery stripe below which there are 

 about 4 dark stripes fading into the silvery of the belly; about 5 dark 

 stripes show above lateral line, and others are lost in dark color of 

 back. Head dark to lower part of eye, silver}' on sides below eye, 

 and white on ventral surface. Maxillary elements dark; narrowly* 

 bordered with -white on lij). Dorsal with spots on the rays, which 

 form about S broken cross streaks. Caudal with several rather narrow 

 dark cross streaks which posteriorly follow the edge of the forked 

 caudal, but become more nearly vertical anteriorh'; toward each edge 

 of caudal some of the streaks fork and shorter streaks are introduced. 

 No longitudinal median streak present on caudal. Anal very slight!}' 

 tinged with dusky: ventral and oectoral colorless. 



