1885.] NATURAL SCIENCES OF PHILADELPHIA. 397 



deep ; longest dorsal spine 2\ in length of head ; head 

 2i ; depth 2f. About 38 scales in the lateral line ; eye 

 4 in head; dermal tlaps on lateral line longer than 

 eye, a few of the scales on upper and posterior parts 

 of the body with dermal flaps. Suborbital stay with 

 a small spine near its centre, one on its posterior 

 end ; axil dusky, with small white dots on its upper 

 portion; color reddish, marbled with brown. Head and 

 body minutely dotted with white ; caudal and anal fins 

 with broad white bands. Grandicornis. 9. 



aa. Occiput without evident pit ; no pit between lower anterior 

 margin of orbit and suborbital stay ; cheeks scaly. 



j. Pectoral rays all simple ; opercle and subopercle 

 well scaled ; occipital pit obsolete ; dermal flaps on 

 scales of the lateral line and belly. Supraorbital 

 tentacles not branched, £ the length of the body. 

 Second anal spine moderate ; spinous dorsal low, 

 D. XII-10 ; A. Ill— 5. Color uniform carmine-red, 

 the fins somewhat clouded with orange. Supra- 

 orbital tentacle and lower pectoral with brown 

 bands. Head 2? total length ; eye 5 in head. 



Castor. 10. 

 jj. Pectorals with some of their upper rays branched. 

 k. Scales large, about 28 in the lateral line ; occipital 

 cavity almost obsolete ; longest dorsal spine 2§ 

 in head ; longest anal spine 3 in head ; second 

 and third anal spines subequal ; few of the scales 

 with dermal flaps. Eye about 3£ in head. Sub- 

 orbital stay armed with two small spines ; supra- 

 ocular flaps minute, a few small flaps on the 

 head; depth of body 3 in length. Color dusky 

 grayish, marbled with blackish ; a black suborbital 

 bar ; a black bar at base of caudal ; axil of pec- 

 toral whitish with dusky specks, a black spot 

 on its upper edge ; ventrals mostly black ( Goode 

 and Bean). Occipitalis. 11. 



kk. Scales small, about 47 in the lateral line ; longest 

 dorsal spine 2£ in head ; longest anal spine If in 

 head ; second anal spine evidently longer and 

 stronger than the third. Head 2|; depth 3 ; eye 



