150 CALIFORNIA ACADEMY OF SCIENCES. 



Snout short, as in hrevis, about 2 in the interocular width. 

 Upper jaw everywhere narrowly projecting, the intermax- 

 illary band of teeth about as in hrevis. 



Lateral line zig-zag, with branches extending from the 

 angles. 



Distance of dorsal fin from the snout 21 in the length; 

 the dorsal spine 1^^ in the head, roughened in front; short 

 teeth on its inner margin except near base. Distance be- 

 tween the dorsal and adipose fins 21 in the length; adipose 

 fin high and short. 



Caudal forked, the lobes pointed, 1 in the head. 



Origin of anal three-fifths nearer base of caudal than to 

 the rictus. 



Ventrals reaching the anal, I5 in head. 



Pectoral spine 1^ in head, otherwise like that of hrevis. 



Color, purplish on the back; head dotted above and be- 

 low Avith purple; upper lip dark purple, the lower lip with 

 a very narrow purple margin; a rather obscure lateral baud 

 formed of dark dots; minute punctulations above the anal 

 fin; all the fins more or less dotted with purplish, the caudal 

 narrowly edged with that color. 



Head 3i; depth, below dorsal 6, above anal 5; D. I, 6; 

 A. 30. 



140. Ageneiosus valenciennesi Bieeker. 



Locality: Kio Putj'. 



141. Ageneiosus armatus Lacepede. 



142. Ageneiosus ucayalensis Castelnau. 



Locality: Para. 



143. Ageneiosus dentatus Kner. 



Ageneiosus parchdis Liitken. 

 Localities: Teffe; Para; Cameta. 



144. Ageneiosus porphyreus Cope. 



145. Ageneiosus dawalla (Schomburgk). 



Ageneiosus ineimisCviY. &Val., Dotof Bloch; Ageneiosus sehaGvixxVaer. 



§ Pseudageneiosus. 



146. Ageneiosus brevifilis Cav. & Vai. 



Locality: Serpa. 



