

ICHTHYOLOGY. 



41 





1. CAMrOSTOMA ORNATUM, Grd. 



Plate XXV, Figs. 1—4. 



Spec. Char.— -It is larger, more elongated, and more fusiform than C. anomalum. The head enters four times and a half in 

 the total length. The diameter of the eye enters nearly six times in the length of the side of the head The scales are much 

 smaller than in C. anomalum ; they are sub-circular, rather deeper than long, with radiating furrows upon their posterior half. 



Syn. — Campostoma omnium, Grd. in Proc, Acad. Nat. Sc. Philad. VIII, 1856, 176. 



The upper regions are purplish black ; the inferior regions golden brown and yellow, with 

 black spots scattered over the flanks. A black patch at the base of all the fins, otherwise the 

 latter are orange or yellowish brown. 



D2 ; 8; A 2, 8 ; 7,1,9,8,1,6; V 8 ; P 16. 



Plate XXV, fig. 1, represents Campostoma ornatum,, size of life ; fig. 2 is a scale from the 

 dorsal region ; fig. 3, a scale from the lateral line; and, fig. 4, a scale from the abdominal 





region. 







List of specimens. 



• 







Catal. 

 No. 



Cor. No. 

 of teeth. 



.Voof 

 spec. 



4 



Age. 



Locality. 



When col- 

 lected. 



"Whence obtained. 



* 



Nature of 

 specimen. 



Collected by — 



77 



2682 



\dult. 



Chihuahua river & trib's. 



1855 Jno. Potts, Esq.... 



Alcoholic. 







2. CAMPOSTOMA FORMOSULUM, Grd. 



Plate XXV, Figs. 5—8. 



Spec. Char. — The head is a little less than the fifth of the total length, and so also is the caudal fin. It resembles more C. 

 anomalum than C. ornatum ; the most conspicuous difference consists in the presence of larger scales, the posterior margin of 

 which being scalloped. The radiating furrows are very conspicuous, occupying the posterior section of the scale only. 



Syn.— Campostoma formosul urn, Grd. in Proc. Acad. Nat, Sc. Philad. VIII, 1856, 176. 



The erround color of the dorsal rep-ion is dark immle. with seat 



black 



beneath yellowish brown. The dorsal fin and the base of the caudal exhibiting a black patch. 



Plate XXV, fig, 5, represents Campostoma formosxilum^ size of life ; fig, 6, a scale from the 



dorsal region ; fig, 7, a scale from the lateral line ; and, fig. 8, a scale from the abdominal 



region. 



List of specimens 



Catal 

 No. 



76 



Cor No. No. of ] Age 

 of teeth, spec. 



Locality. 



When col- 

 lected. 



Whence obtained Orig'l Nature of 



No. 



2681 



15 



Collected by 



specimen 





Adult. Rio Sabinal,trib.of Rio 



San Antonio, Texas. 



1854 



Major Ernory. 



116 

 117 

 US 



Alcoholic. Dr C. B. Kennedy, 







G 



l 





