NOMENCLATURE AND MORPHOLOGY. 129 



ing from the orbit; the fins are uni-color except the second dorsal, 

 which exhibits two longitudinal bars upon its base; the upper 

 ones are greenish olive, the lower ones are yellowish olive." 

 (GiRARD, U. S. Mex. Bound. Surv. II, 3, 1859.) 



GRISTES NIGRICANS Herbert, 1859. "In color, this fish is 

 of a dusky bluish black, sometimes with bronze reflections, the 

 under parts bluish white, the cheeks and gill-covers nacreous, of 

 a bluish color. 



' 'The body is compressed; back arched and gibbous; profile 

 descending obliquely to the rostrum, which is moderately pro- 

 longed; scales large, truncated; scales on the operculum large; 

 a single series on the suboperculum, much smaller on the pre- 

 operculum, ascending high up on the membrane of the soft 

 dorsal and caudal fins; eyes large; nostrils double; operculum 

 pointed, with a loose membrane; the lower jaw is somewhat long- 

 est; the jaws are smooth and scaleless; both jaws are armed with 

 a broad patch of minute conic acute reserved teeth ; an oblong 

 patch of rasp-like teeth on the vomer, and a bartd of the same 

 kind on the palatines; branchial arches minutely toothed; 

 pharyngeal teeth in rounded patches. The dorsal fin is com- 

 posed of 9 stout spines ; the second dorsal of 1 spine and 14 soft 

 rays ; the pectorals have 18 soft rays, the veritrals 1 spine 

 and 5 soft rays, the anal 3 spines and 12 soft rays, and the 

 caudal 16 soft rays." (HERBERT, Fish and Fishing, 195, 1859.) 

 (I think this description more applicable to the large-mouthed 

 Black Bass than the small-mouthed form, although Herbert 

 copied it from DeKay's C. fasciatus; but I think he considered 

 the latter the same as H. nigricans C. & V., on the strength of 

 Professor Agassiz's estimate of, and statement concerning, the 

 same species, viz: "Dr. DeKay describes it [Huro nigricans] as 

 Centrarchusfasciatus, although he copies also Cuvier's description 

 and figure of Huro nigricans, but without perceiving their iden- 

 tity."* It is also evident from the context of Herbert's descrip- 



* " Lake Superior," p. 287, 1850. 



