lis OSTAEIOPllTSI. 



part of the anterior arch. Dorsal I 7 ; filamentous ray extending to the adipose fin. Anal 10-21 ; 

 longest ray as long as or a little longer than the base of the lin. Pectoral spine nearly as long as the 

 head. Silvery, back bluish. 



Hah. South AjiI'Irica, Brazil. 



Here described from two specimens, 300 and 400 mm. in total length. 



6. .ffilurichthys filamentosus. 



S/liirvs hagre (non Liini.), BlocLj Ausl. Fische, t. 365 (1793) '. 



FeUditJnjs flmventosus, Swainson, Nat. Hist. Fish. ii. p. 305 (1839)' ; Jord. & Everm. Bull. U.S. 



Nat. Mus. xlvii. 1896, p. 118\ 

 yElurkhthys longispinis (part.)^ Giiuth. Cat. Fisli. v. p. 178 (186i)''. 



Distance from tip of snout to origin of dorsal j the length of the fish. Occipital process narrowed posteriorly, 

 with slightly concave lateral edges. Maxillary barbel extending to ventral fin ; vomerine and palatine 

 teeth forming a narrow band which is interrupted in the middle ; 7 gill-rakers on the lower part of the 

 anterior arch. Dorsal 17; filamentous ray extending to the caudal fin. Anal24-2G; longest ray a 

 little shorter tlian the base of the fin. Pectoral spine nearly as long as the head. Silvery, back 

 bluish. 



Iluh. Atlantic Coasts and Ilivers of Central America : 

 Gulf of Mexico ^ ; Lake Nicaragua '^. 



Here described from a specimen 2'20 mm. in total length. 



7. .ffiluriclithys pmnimaculatus. 



? GuJeichthys eyduuxii, Cuv. & Val. Hist. Nat. Poiss. xv. p. 43 (1810) \ 

 jrElurichthys jnmihnnculatus, Steind. Sitzungsh. Ak. Wien, Ixxii. 1876, p. 565, t. 8". 

 Felickthys pinnimaculatus, Jord. & Everm. Bull. U.S. Nat. Mus. xlvii. 1896, p. 117'. 



Distance from tip of snout to origin of dorsal fin 4 to |- the length of the fish. Occipital process narrowed 

 posteriorly, with straight or concave lateral edges. Maxillary barbel extending to, or nearly to, the 

 anal fin ; teeth on the palate forming a continuous or suboontinuous band, the vomerine and palatine 

 patches subcqual ; 2 gill-rakers and a fevf rudiments on the lower part of the anterior arch. Dorsal I 7 : 

 filamentous ray extending to adipose fin or even to the caudal. Anal 27-31 ; longest ray about - the 

 length of base of the fin (more in the adult, less in the young). Pectoral spine f to | the length of head. 

 Silvery, back bluish ; a blackish spot on the anterior part of the anal and sometimes one on the caudal 

 and on each of tbe paired fins. 



llah. Pacific Coast from Mexico to Ecuador : 



Altata " and Mazatlan in Sinaloa [Jordan ^) ; Costa Rica - ; Panama 

 [Jordan " ") ; Guayaquil 1. 



Here described from three specimens, 250 to 500 mm. in total length. 



8. .Slluriclithys bagre. 



Sllurus bayre, Linn. Syst. Nat. p. 505 (1766). 



/Elurichthys (/ronovii (Cuv. & Val.), Giiuth. Cat. Fish. v. p. 178 (186-1). 



Fdkhthys bagre, Jord. & Everm. Bull. U.S. Nat. Mus. xlvii. 1896, p. 117. 



