126 BOOK OF THE BLACK BASS. 



posterior to the base of pectorals ; upper regions, reddish brown, 

 maculated ; a lateral dark baud ; inferior regions whitish, uni- 

 color. 



"It is closely related to, if not identical, with Grystes nobilis 

 Agassiz, from the southern bend of the Tennessee River. It has, 

 also, much greater affinities with D. fasciatus than with D. sal- 

 moides." — (Gieard, U. S. Pac. R. R. Exp. and Surv. X, Fishes, 

 4, 1858.) 



HuRO NIGRICANS Giinther, 1859. — "D. Gj-^; A. j\ ; Ti. lat. 

 60-65. Height of body equal to one-third of the total length, 

 excluding the caudal; cleft of the mouth obliquely running up- 

 wards towards the plane of the forehead ; caudal slightly notched ; 

 coloration uniform." — GIjnther, Cat. Fishes, Brit. Miis. 1, 255, 

 1859.) 



DiOPLiTES NUECENSis Glrard, 1859. —"Body elongated sub- 

 fusiform ; head constituling a little less than the third of the 

 entire length ; posterior extremity of maxillary extending to a 

 vertical line drawn posteriorly to the orbit ; scales on the cheeks 

 nearly equal in size to those on the gill covers; origin of the 

 ventrals placed posteriorly to the base of the pectorals ; upper 

 regions reddish brown, maculated; a lateral dark band; inferior 

 regions whitish uni-color. 



" This species is more closely related to D. fasciatus than to D. 

 salmoides, and probably identical with Gnji^tes nobilis (Ag.). 

 At any rate the latter has greater affinities with D. fasciatus tlian 

 with D. salmoides, the latter being restricted to its proper limits. 



"The body is proportionally more elongated than in D. fas- 

 ciatus, resembling more in that respect D. srdmoides. It is com- 

 pressed and sub-uniform when seen in profile. The greatest 

 depth is somewliat less than the fourth of the total length, in 

 ^hich the head enters a little less than three times ; the mouth 

 is more deeply cleft than in any other of the known species of 

 the genus, and its gap, is as usual, obli(|ue upwards, owing to 

 ihe constant protrusion of the lower jaw beyond the upper, 



