ARGYREUS nasutus, the Dace, Rhinichthis Ag; Chondrostoma Heck., is found in boisterous and rocky streams, and takes the hook with the spring of a trout. astronasus, the black-nosed Dace, Mitch., is a favorite for Aquaria. 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 occasionally met with. STILBE americana (abramis versicolor, deKay.) Its young are the minnows and shiners. Other small species are the CLINOSTOMUS funduloides and C. margarita. HYPSILEPIS (Plargyrus, Raf.) kentuckiensis. cornutus. HYBOPSIS procne. Prof. Cope has it from the Delaware, Schuylkill and Susquehanna, 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-met with in several localities near Lancaster. Also what I called the CYPRINELLA analostoma, and the MoxosтOMA 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-finned chubsucker or Susquehanna carp; the other, the golden sucker or common Susquehanna mullet, or mullet sucker. The LABEO cyprinus and CARPIODES cyprinus, are names applied to the Susquehanna carp. A more extended investigation may reveal other species. This embraces all known to the writer. With respect to the cartilaginous fishes, we have the lamprey, AmмoCETUS bicolor. The colored mud-lamprey, and a parasitic species, perhaps PETROMYZON 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. FLORA. An enumeration of indigenous and naturalized Plants found growing in the County of Lancaster, Pennsylvania. BY THOS. C. PORTER, Professor of Botany and Zoology in Lafayette College. The following catalogue is based upon the results of explorations made during a residence in the city of Lancaster between the years 1853 and 1866. All the plants contained in it were seen and examined by the author, with the single exception of Quercus phellos, L., and specimens of the rarer species, about which there might be any question, are at hand for reference in his own herbarium and in the herbaria of the Linnæan Society and the State Normal School at Millersville. In the annals of American Botany, Lancaster county is classic ground. It was the home of the distinguished Muhlenberg, who probably collected on her soil, at the beginning of the century, many of the species first described by him and by the German Botanist Willdenou, with whom he carried on a long and active correspondence. He left behind him in manuscript a FLORA LANCASTRIENSIS, which unfortunately has either been lost, or is no longer accessible. The only list of the plants of the county heretofore published is the one in Rupp's History. Its preface shows that it was compiled by the late Dr. William Darlington, of West Chester. But, because it is a compilation, and because no fewer than 87 of its species are inserted on the strength of mere conjecture, it was thought best not to use it in the preparation of the present catalogue. Its 61 undetected phænogams and vascular cryptogams were therefore ruled out-a loss more than compensated by the addition of 225, not including marked varieties. The aim of the author has been to lay a good foundation upon which any one who may wish to continue the work hereafter can build with confidence, for the field is by no means exhausted. Much remains to be done, and new discoveries may be looked for, especially in the unexplored northern and eastern portions of the county. On the mosses and liverworts, little attention was bestowed, and by further search their numbers might be largely increased. In the arrangement and nomenclature, the fifth edition of Dr. Gray's Manual of the Botany of the Northern United States, (1868), has been followed. Naturalized and adventive plants are indicated by italics. For the rarer species localities are given and the names of the persons by whom they were communicated. EASTON, PA., March 12, 1869. |