List of Lower Silurian Fossils, Cincinnati Group. 77 



Genus Trematis, Sharpe. Gr. trema, a foramen. 



340 Trematis millepunctata, Hall. L. mille, a thousand; pungo, I 



puncture. 



341 punctostriata, Hall. h. pungo; ^^r^'a, a ridge. 



342 terminalis, Conrad. L. terminalis, pertaining to the bound- 



ary. 



343 Dyeri, S. A. Miller. 



Family LingtUida\ L. lingula, a little tongue. 

 Genus Lingitla, Brugiuere. 



344 Lingula Covington ensis, Hall and Whitfield. 



Genus Lingulell'U, Salter. 



345 Lingulella attenuata, Sowerby. L. attennatus, thin. 

 340 Norwoodi, James. 



347 riciniformis, Hall. L. ricinus^ a tick; forma. 



348 Van Horni, S. A. Miller. 



349 Cincinnatiensis, Hall and Whitfield. 



Genus Leptohulus, Hall. Gr. leptos^ thin; obolus, a coin. 



350 Leptobulus lepis, Hall. L. lejns, a scale. 



Class PoLYZoA. Gv. 2>olus, many; zoon, an animal. 



Order Gymnolcemata. Gr. gumnos, naked; Zomo^, throat. 



Famil}^ EscharicUe. Gr. eschara, a grate. 



Genus Ptilodyctia, Lonsdale. Qtv. ptilon, a feather; dictuon,^ net. 



351 Ptilodyctia acuminata, James. L. acuminatus^ sharpened. 



352 elegantula. Hall. L. elegans, beautiful. 



353 emacerata, Nicholson. L. emaceratus, reduced. 



354 falciformis, Nicholson. L. falx, a sickle; forma. 



355 fenestelliformis, Nicholson. L. fenestella, a little window; 



forma. 



356 fragilis, Billings. Li. frag His. fragile. 



357 flagellum, Nicholson, \j.flagellmn, a whip or young branch. 



358 fiexuosa, James. L. fexuosus, winding. 



359 granulosa, James. L. grannni, a grain. 



360 Hilli, James. 



361 maculata, Ulrich. L. maculatus, spotted. 



362 nitidula, Billings. L. nitidulus, somewhat shining. 



363 parallela, James. L. parallelus, parallel. 



364 perelegans, Ulrich. L. ^e?*, through ; eZegra^s, elegant. 



365 plumaria, James. L. pluniarius, resembling feathers. 



366 Shafteri, Meek. 



