386 PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 



hh. Dorsal spines very liigli, the longest two-tbirds length of bead ; 

 second anal spine nearly two-thirds length of 

 head ; color grayish-silvery, with live jet black 

 cross-bands; pectorals much shorter than bead. 



Dovii.* 

 dd. Body oblong, the depth less than the length of the head; oiiter teeth much 



enlarged, blunt ; preopercle very sbarjily ser- 

 rate (CoNODON Cuvier.) 



j. Color silvery, with eight dark cross-bands; snout not obtuse; 

 second anal and fourth dorsal spines strong, 

 half length of head; pectoral shorter than 



head ; caudal lunate NOBiLis.t 



eo. 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 

 length of head, about equal to second anal 

 spine; pectorals long, about reaching vent; 

 snout sharp, protruding; color grayish, with 

 four faint dark cross-bands . . Macracanthus. U 



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



depression; head low; preorbital narrow. 

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

 length of head ; color grayish-silvery, nearly 



plain Branicki.U 



kk. Outer teeth in upper jaw not enlarged. 



(PsEUDormsTiroMA Sanvage.) 



0. Third dorsal spine produced, much longer than the 

 others, and about half length of head ; second 

 anal spine somewhat shorter ; protile convex ; 

 scales nearly smooth ; pectoral very long, nearly 



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

 (Gilb.); Panama (Gf/ir. ; Gilb.). 



t Perca nobilis Linn. Syst. Nat. x, 1, 291 = Conodon phtmim Gthr. i, 304, 18.")9 = Cono- 

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

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

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



t = Pristipoma Cuv. Si, Val. 



^ Pristipoma hmnile Kner '& Steindachner, Sitzsber. Akad. Wiss. Miinch. 1863, 222. 

 Habitat : Rio Bayano, Panama {Kner cS~ Steind.) ; not seen by other collectors. 



\\ Pristipoma macracanthum Giinther, Proc. Zool. Soc. Lond. 1864, 146. Habitat: Mn- 

 zatlau {Steind. ; Gilb.); Punta Arenas (Gi7&.) ; Chiapam {Giinther); Panama (GJZZ>.). 



H Pristipoma iranickii Steindachner, Denkschr. Kaiserl. Akad. Wissen. Wein. xli, 

 28, 1879. Habitat: Tumbez {Steind.); Panama {Gilbert); Mazatlan {Gilbert). 



