eigenmann: the cheirodontin^. 



51 



premaxillary and maxillary teeth of nearly the same size, about eleven on the 

 premaxillary, about twenty on the maxillary, anterior mandibulary teeth con- 

 siderably larger; eight in front and minute ones on the side, third suborbital with 

 a spur running up behind the eye; a wedge-shaped naked area behind it; post- 

 orbitals obsolete; opercle emarginate above. Gill-rakers 7 + 13, the longest about 

 equal to the pupil. 



Origin of dorsal a little nearer to tip of snout than base of caudal, the fourth 

 ray highest, reaching to the middle of the caudal in the type; caudal forked, the 

 lobes longer than head; origin of anal equidistant from _base of middle caudal 

 rays and the origin of the dorsal, below middle of dorsal as measured from tip of 



Fig. 14. Megalaniphodus melanopterus Eigenmann. 6807, C. M., a, side of liead; b, top of head, showing 

 frontal (/) and occipital (o) fontanels; c, d, e, premaxillary, maxillary, and mandible, much enlarged. The relay 

 teeth in the lower jaw are so numerous that they give the impression of a double row. 



snout; anal with a narrow anterior lobe equal to length of head, the rays then 

 of about equal length or decreasing but little to near the end where the fin is 

 rounded; pectorals reaching beyond entire base of ventrals, ventrals to about the 

 seventh anal ray. 



Scales thin with few strise and the rest of the sculpturing very weak; caudal 

 and anal naked, a single series of scales along the base of the anal; pores developed 

 on a very few scales; eleven scales between ventrals and dorsals. 



A very conspicuous, large, humeral bar; dorsal and caudal of varying degrees 

 of blackness. Anal dusky. 



