386 PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 



hh. Dorsal spines very high, the longest two-tbirds length of head: 

 second anal spine nearly two-thirds length of 

 head ; color grayish-silvery, with tive jet black 

 cross -bands; pectorals mnch shorter than head. 



Do VII.* 

 dd. Body oblong, the depth less than the length of the head; outer teeth mnch 



enlarged, blunt ; preopercle very sharply ser- 

 rate (CoxoDON Cuvier.) 



j. Color silvery, with eight dark cross-bands; snout uot obtuse; 

 second anal and fourth dorsal spines strong, 

 half length of head; pectoral shorter than 



head ; caudal lunate NOBiLis.t 



cc. Soft dorsal and anal destitute of scales or very nearly so ; form oblong ; scales 



above lateral line in series parallel with the 

 back. 

 k. Outer teeth in upper jaw slightly enlarged, acute. 



(POMADASYS.t Lac.) 



I. Dorsal spines 12 ; vertex convex ; preorbital broad. 



m. " Scales rather small (8-56-20) ; fourth dorsal spine 2f in 

 head ; second anal spine more than half head; 

 pectorals not reaching vent ; snout produced ; 



coloration uniform" Humilis.^ 



mm. Scales larger (6-48-14) ; longest dorsal spine nearly half 



1 length of head, about equal to second anal 



spine; pectorals long, about reaching vent; 



snout sharp, protruding; color grayish, with 



four faint dark cross-bauds. .Mackacaxthus. |1 



II. Dorsal spines 13; vertex with a small but evident concave 



depression; head low; preorbital narrow. 

 n. Dorsal spines very high, the highest more than half 

 length of head ; color grayish-silvery, nearly 



plain Beaxicki.!! 



kk. Outer teeth in upper jaw not enlarged. 



(PsEUDOPRiSTiroMA Sauvage.) 



0. Third dorsal spine produced, much longer than the 

 others, and about half length of head ; second 

 anal spine somewhat shorter; profile convex; 

 scales nearly smooth ; pectoral very long, nearly 



* Pristipoma dovii Giinther, Proc. Zool. Soc. Lond. 1864, 23. Ildbltat : Mazatlan 

 ((Ulb.)', Panama (6?f/ir. ; Gilb.). 



\ Perca noiilis Linn. Syst. Nat. x, 1,291 := Conodon plumieri Gthr. i, 304, ISoO^Coho- 

 don plumieri Streets Bull. U. S. Nat. Mns. vii, .50, 1877= Conodon antiUanus C. & V. v, 

 156, 1830. Hahitat : Coast of Texas, West Indies, to Brazil. Eecorded by Streets from 

 Boca Soledad, Pacific coast of Lower California; not observed by other collectors. 



X = Pristipoma Cuv. &. Val. 



^ Pristipoma humile Kner & Steindachner, .Sifzsber. Akad. Wiss. Miinch. IBBS, 222. 

 Habitat : Rio Bayano, Panama {Kner iS' Stcind.) ; not seen by other collectors. 



\\ Pristijyoma viacracanihum Giinther, Proc. Zool. Soc. Lond. 1864, 146. Habitat: Ma- 

 zatlan (Steind. ; G-ilb.); Punta Arenas {Gilb.): Chiapam {Giinther); Panama {Gilb.). 



\\ Pristipoma branickii Steindachner, Denkschr. Kaiserl. Akad. Wissen, Wein. xli, 

 28, 1879. Habitat: Tamhez {Stcind.): Panama {Gilbert); Mazatlan {Gilbert). 



