1885.] NATURAL SCIENCES OF PHILADELPHIA. 395 



suborbital stay ; dorsal fin lower, its longest spine 2] in 

 head ; anal spine 2£ in head. Eye larger, 4} in head. 

 Supraocular tentacles about as long as diameter of eye. 

 Head 2£ ; depth 2f ; D. XII-10 ; A. III-5. Axil dusky, 

 with one or more dark spots. Body brownish red, mar- 

 bled with darker, and dotted with deep black, which some- 

 times forms edges around the darker spots. Porous. 2. 

 bb. Breast scaly. 

 d. Coronal spines present ; supraocular tentacles about equal 

 to diameter of eye. 

 e. Third anal spine evidently longer and stronger than the 

 second ; suborbital stay armed with three spines ; no 

 distinct pit between lower anterior margin of orbit and 

 suborbital stay ; length of second anal spine 2i (young) 

 to 3 (adult) in head ; longest dorsal spine 2^ in head. 

 Head 2^ ; depth 2§ ; scales in lateral line about 48 ; some 

 of the scales with dermal flaps. D. XII-10; A. Ill— 5. 

 Supraocular tentacles less than diameter of eye ; axil 

 dusk}', with small round brownish spots. Color brownish, 

 clouded with darker ; a few darker dots behind pectorals. 



Brasiliensis. 3. 

 ee. Third anal spine shorter and weaker than second. 

 /. Suborbital stay not armed with spines ; occipital pit 

 evidently broader than long. 

 g. Cheeks scaly ; fins low ; longest dorsal spine 1\ to 3 in 

 head ; no distinct pit between lower anterior margin 

 of orbit and suborbital stay. 

 /?. Scales large, some of them with dermal flaps ; about 30 

 in the lateral line ; supraorbital tentacles well devel- 

 oped. Head 2 T V ; depth 3£ ; D. XII-10 ; A. III-5 ; 

 longest dorsal spine 3 in head; longest anal spine 3 

 in head ; eye 4^ in head. Color gray or red, with 

 broad, darker shades, irregular and variable; fins 

 similarly colored; pectorals barred (Giinther.) 



Histrio. 4. 



hh. l [Scales smaller, without dermal flaps ; about 46 



scales in the lateral line. Head 2f ; depth 3§ ; eye 



3J in head ; longest dorsal spine 2i in head ; longest 



1 These characters are taken from Valenciennes figure, and are all more or 

 less doubtful. 



