1883,] NATURAL SCIENCES OF PHILADELPHIA. 289 



20. Meaticirrus nasus (Giiother) Jor. & Gfill. 



( Umbrina nasus Giinther, Fishes Centr. Amer., 1869, 426.) 



Type, about a foot in length, adult. 



D. X-I, 22 ; eye proportionately very large, 4^ in head ; max- 

 illary reaching to below posterior edge of pupil ; snout 3| in 

 head; longest dorsal spine 1| in head, reaching to third ray of 

 second dorsal ; pectoral 1^ in head; ventrals short. 



Gill-rakers very short, almost obsolete ; posterior nostril large, 

 oval; anterior round; interorbital width 41 in head; scales of 

 breast large. 



Color pale, the pectoral dusky. 



21. Isopisthus brevipinnis (Cuv. & Val.) Gill. 



(Ancylodon brevipinnis C. & V., v, 84.) 

 The t3'pe of this species (Cayenne, Poiteau ; in bad condition) 

 has the pectoral fin If in head, as in /. affi.aU Steindaehner (Neue 

 und seltene Fische aus den K. K. Zool. Museum zu Wien, etc., 

 43), differing in that respect from the Panama species, Isopisthus 

 remifer. There is not much doubt of the identity of /. affinis 

 with /. brevipinnis. 



22. Gerres peruviauas Cuvier & Valenciennes. 



(Cuvier & Valenciennes, vi, 467.) 

 The type of this species is apparently identical with the 

 common West Coast species called by this name by Jordan & 

 Gilbert (Bull, IJ. S. Fish Com., 1881, 330), and later by Evermann 

 & Meek (Proc. Ac, Nat. Sci. Phila., 1883, 123). The types of 

 Gerres gula C. & Y. also correspond with the species so named 

 by the above writers. One of them (Brazil, Delalande) has the 

 head 3 in length, the depth 2§ ; longest dorsal spine 1| in head ; 

 second- anal spine 3^ ; eye 2| ; tip of spinous dorsal dusky. The 

 types of Gerres aprion C. & V. seem to correspond with the 

 species called by us Gerres cinereus (Walbaum) (^^ Gerres zebra 

 and Gerres squamipinnis Gthr.). They are, however, in bad 

 condition, the color faded and the scales mostl}^ rubbed off. 



23. Gerres brasilianus Cuvier & Valenciennes. 



(Cuvier & Valenciennes, vi, 458.) 



The tj^pe of this species is in very bad condition, unfit for 



detailed description. Sides appai'cntly with dark stripes along 



the rows of scales. Preorbital and preopercle serrate. Frontal 



groove broad, naked. Longest dorsal spine 5 in body. Second 



