OF LAXCASTER COUNTY. 579 



Argtreus nasutus, the Dace, Rhiuichthis Ag; Cliondiostoma Heck., is f.nind in Kois- 

 terous and rocky streams, and takes the hook with the spring' of a trout 

 astronasus, the black-nosed Dace, Mitcli., is a iavoritc for A(iuar?a. In Spring they 

 are brilliantly colored with vermilion red and orange, found in the small stream 

 in the Dillerville swamp. Another, .which I suppose to be the A. lunatus, is occa- 

 sionally met with. 

 Stilbe americana (abramis versicolor, deEay.) Its young arc the minnows and 

 shiners. 

 Other small species are the Clinostomus funduloides and C. mar-'arita. 

 Htpsilepis (Plargyrus, Raf.) 

 kentuckiensis. , 



coniutus. 

 Hybopsis procue. Prof. Cope has it from the Delaware, Schuylkill and Su.squehanna, 

 where I originally saw it, but not further westward, 

 hudsonius, and a specimen closely allied to 

 FUNDULUS multifasciatus, peculiar in having a series of 13 bluish vertical bands— mot 

 with in several localities near Lancaster. Also what I called the Cyi'niNELLA 

 analostoma, and the Moxostoma oblongum. These latter are without a lateral 

 line, taken in Mill creek. 

 The Sucker Family comes next in order. The hammer-head, stone-roller or spotted 

 sucker, Catostomus longirostris, a variety of C. communis or black sucker, of a much 

 lighter color, accords with the description of C. pallidus. The large scaled sucker, 

 C. aureolus, is much like the C. macrolepidotus, which latter I consider the long-Jlnned 

 chubsuckeror Susquehanna carp; the other, the golden sucker or common Susipichanna 

 mullet, or mullet sucker. The Labeo cyprinus and Carpiodes cyprinus, are names 

 applied to the Susquehanna carp. 



A more extended investigation may reveal other siiccics. This emliraccs all known 

 to the writer. AYith respect to the cartilaginous fishes, we have the lamprey, Ammo- 

 CCETUS bicolor. The colored mud-lamprey, and a parasitic species, perhaps Petromyzox 

 nigricans, which attaches itself to other fishes, and is the bluish lamprey. These are 

 only met with in the Susquehanna river, as far as now known. 



