List of Loicer Silurian Fossils, Cincinnati Group. 69 



Genus Cyrtolites, Conrad. Gr. kurtos, curved; lithos, stone. 



150 Cyrtolites earinatus, S. A. Miller. L. carina, a keel. 



151 corapressus, Conrad. L. conipressus, pressed. 



152 Dyeri, Hall. 



153 ornatus, Conrad, L. ornatus, adorned. 



154 elegans, S, A. Miller. L. eleyans, beautiful. 



155 magnus, S. A. Miller. L. magaus, great. 



Genus J/icroceras, Hall. Gr. micros, small; keras, horn. 



156 Microceras inornatum, Hall. L. inornatus, unadorned. 



157 luinutissimuni, Ulricli. L. rninutissimus, least. 



Famil}' Pleurotornariidce. Giv. pleuron, side; tome, notch. 

 Genus MtircMsonia, D'Archiac. Named in honor of Sir R. J. Mur- 



chison. 



158 Murchisonia augustata, Hall. L. augustus, narrow. 



159 Milleri, Hall. 



160 gracilis, Hall. L. gracilis, slender. 



161 Ijellicincta, Hall. It. bellus, \:>veUy; cinctus, handed. 



162 perangulata, Hall. L. ^jer, through ; angulus, angle. 



163 uniangulata, Hall. L. unus, one: an'/uluj. 



164 decurta. Hall. L. decurtus, cut short. 



Genus Pleurotomaria, De France. 



165 Pleurotomaria ambigua, Hall. L. amhiguus, doubtful. 



166 carinata, -lames. L. carina, a keel. 



167 Halli, S. A. Miller. 



168 sub-conica, Hall. L. sub; conus, a cone. 



169 subtilstriata, Hall. L. subtilis, fine; stria, a ridge. 



170 tropidophora, Meek. Gr. tropis, tropidos, a keel; phero, 



I bear. 



171 Ohioensis, James. (For trilineata, which was pre-occupied.) 



Genus Trochonema, Salter. Gr. trochos, circular; neraa, a thread. 



172 Trochonema umbilicatum, Hall. L. umbilicus, the navel. 

 Genus Baj^histoma, Hall. Gr. rapho, I sew; tome, a notch. 



173 Raphistoma lenticulare, Conrad. L. lenticularia, like a lentil. 



174 planistria, Hall. Jj. planus, even; stria. 



Family Turbinidw. L. turbo, a top. 



Genus Cyclora, Hall. Gr. kuklos, a circle; L. as, oris, mouth. 



175 Cyclora ? Hoffmani, S. A. Miller. 



