Jordan and Evermaiin. — Fishes of North Atnertca. 153 



243. KHAMDIA MICROPTEUA, (GUnthor). 



Head 4^; depth 7A ; D.I,G; A. 13. Occipital process slender, not reach- 

 ing base of dorsal; adipose fin 2| in length ; maxillary barbels reaching 

 end of dorsal. Pectoral spine a little more than i head. Ventral very 

 short, shorter than pectoral. Anal small ; caudal short, the lower lobe 7 

 in body. Blackish; dorsal with a faint band. Rio San Geroninio. 

 (Giinther.) (//«/ip6f, small ; -Tepov,^n.) 



Pimelodns microplerus, GCntheb, Cat., v, 124, 1864, Rio San Geronimo, Guatemala. 

 244. RHAMDIA MANAGUENSIS, (Giinther). 



Head 5: depth 6. D. I, 6; A. 14 or 15. Occipital process slender, not 

 reaching basal bone of dorsal; adipose fin more than i length ; maxillary 

 barbels short, reaching nearly to base of dorsal spine; dorsal spine short. 

 Color uniform brown ; dorsal with a pale cross-band. Lake Managua, 

 Nicaragua. (Giinther.) 



Pimehdus manmjnensh, GCntheu, Fishes Cent. Am., 474, 18G9, Lake Managua, Nicaragua. 



245. RHAMDIA POLTCAULUS, (Giinther). 



Head 5 ; depth 6. D. I, 7; A. 15. Occipital process short ; adipose fin 

 long, 3it in length ; maxillary barbels to tip of pectoral; dorsal spine very 

 short ; caudal lobes equal. Uniform blackish. Eio San Geronimo. (Giin- 

 ther.) {t:o7J'(;, many; navln^, stem; the number of dorsal and anal rays 

 being greater than usual.) 



Pimehdns polycaulus, GfxTHER, Cat., V, 131,1864, Rio San Geronimo. 



246. RHAMDIA PETENENSIS, (GUnther). 



Head 4^; depth 6. D.I, 6; A. 11. Adipose fin low but long, more than 

 i length, the maxillary barbels reaching to its front. Tail deep ; its depth 

 more than i the head. Lower jaw scarcely shorter. Dorsal spine very 

 feeble ; pectoral spine not quite i head. Ventral fin short, brownish, with 

 a dark lateral band ; dorsal with the usual band. Lake Peten, Yucatan. 

 (Giinther.) 

 Pimelodim peleneimis, Gunther, Cat., v, 126, 1864, Lake Peten, Yucatan. 



247. RHAMDIA PARRII, (Eigenmann). 



Head 4? ; depth 4J to 5. D. 1, 6 ; A. 12 to 14. Upper jaw longer than 

 lower. Occipital process moderate. Dorsal spine very low and weak ; 2i 

 to 21 in head ; pectoral spine 2 to 2^ in head ; caudal 4* to 5|. Occipital 

 process very narrow and short. Maxillary barbels short, extending little 

 beyond dorsal fin ; caudal lobe short and broad. Adipose fin 3 to 3^ 

 in length. Brownish, a dark lateral band. Rio Zanalenco, Chiapas. 

 (Eigenmann.) (Named for Dr. C. C. Parry, a well-known botanist.) 

 RhamdeUii 2)'iiTyi, EiGENMANN,Proc.Cal. Ac. Sci.,1888, 130, Rio Zanalenco, Chiapas. 



82. PIMELODELLA, Eigenmann &. Eigemannu. 



Pseiidorhumdia, .STEfiTDACHNER, Siisswasserf. Sudiistl. Bras., in, 1876, 4G, {Interislriga) ; not of 



Bleeker, which is Pimelinlui. 

 PimelodeUa, Eigenmann & Eigenmann, Proc. Cal. Ac. Sci., 1888, 131, (cristalus). 



