4 PROCEEDINGS OP" UNITED STATES NATIONAL MUSEUM. [1885. 



pecially the dorsal spot, much more sharply defined, less blended with 

 the surrounding coloration. 

 Common in the river. 



11. Notropis deliciosus, Girard. 



(Maniana deliciosa, Girard, Proo. Ac. Nat. Sci. Phila., 1856, 199. 

 Hybopeia missuriensis, Cope, Hayden's G«ol. Surv. Wyo., 1872, 437.) 



Rather common in the river. 



Our specimens are undoubtedly identical with Hyhopsis missurievisis^ 

 Cope. We have lately found the types of Montana deliciosa^ Girard. 

 These have 35 or 36 scales in the lateral line, and we are unable to dis- 

 tinguish tbem from H. missuriensis. The latter in turn agrees fully with 

 H. straminetts, Cope, except that in the latter (found east of the Missis- 

 sippi River) the scales are rather smaller in size. 



Seven specimens from White River, Indiana {straniineus), show the fol- 

 lowing numbers of scales : 34, 36, 36, 37, 37, 38, 38. Two from Cumber- 

 land River {deliciosus)^ 34, 34. Eleven from Des Moines River {delicio- 

 sus), 32, 32, 33, 33, 33, 33, 33, 34, 34, 35, 35. We regard, then, strami- 

 neus as a scarcely tangible variety of deliciosus. Hyhopsis longiceps, Cope, 

 and H. volucellus. Cope, are probably also varieties ®f the same species. 

 Minnilus microstomus, Rafinesque, may beihe same as longiceps or stra 

 mineus, but it is too briefly described to justify us in using the name. 



Our specimens of N. deliciosus vary somewhat in color, some being in 

 life very pale green, silvery below, with traces only of a vertebral streak, 

 and no dark punctulations along the lateral line. Others are darker, 

 the scales dark-edged, a strong dark vertebral line, and numerous dark 

 points along the sides of the body and of the snout. Fins pale. 



12. Notropis gilberti, sp. uov. 



{lAlburnus lineolatus, Agassiz, Bull. Mus. Comp. Zool. 1863,9; ^Levoiaoas lin-e- 

 oJutus, Giinther, vii, 260 ; ?? Hybopsis scylla, Cope, Hayden's Geol. Surv. 

 Wyo., 1872, 438.) 



Common in Village Creek; not seen in the river. 



As this species was later found in abundance in tributaries of the 

 Osage River, the original locality of the Alburnus lineolatus of Agassiz, 

 we have tried to identify our specimens with t.'iC latter species, although 

 the original description is of very little value. 



Hybopsis scylla^ Cope, is perhaps the same species, but the description 

 is not very satisfactory. As, however, both lineolatus and scylla are 

 said to have the teeth 4-4, we have deemed it safest to apply a new 

 name to our species. 



Color, greenish above, paler below ; the sides with numerous dark 

 points, which form an obscure dusky lateral band, which ends in a faint 

 spot ; a dusky dorsal streak ; top of head dusky ; fins, soiled whitish. 



Form more elongate than thatof i\r. deliciosus, with longer, slenderer 

 head, longer and more contracted caudal peduncle. Head long and low, 

 flattish above and rather broad. Snout moderately decurved; 3f in 

 head. Mouth rather large, nearly horizontal, the maxillary extending 



