Ulrick en Correlatwn of the Lower Silurian. 187 
246 
247 
248 
249 
250 
251 
252 
?trophomena alternata Conrad * 
>\ i ^, 
ta — ,l^_ 
friicta Meek . 
rhomboidalis Wilckens 
gibbosa James 
squamula James 
iiasuta Oonrad 
poiiderosa Hall 
253 Strep torhynchus hallianns Miller, 
254 
255 
256 
257 
258 
259 
260 
261 
neglectus James 
nutans James (Meek), 
planoconvexus Hall .. 
siiiuatus Emmons 
subtentus Conrad 
sulcatus Verneuil 
vetustus James 
thifk form (?fllitextusj 
262 Leptaenaplicatella Olrich | * ■ 
263 " sericea * * * 
264 '• " var. aspera James I ' 1 * 
265 Crania dyeri Miller |. ...-..' | * 
266 " laelia ' 
267i " seabiosa Hall * 
2681 " socialis Ulrich 
269!Schizocrania filosa Hall ] * 
270|Pl)olidops cincinnatiensis Hall I 
271 piscina snblamellosa L'lrich I 
272 " tenuistriata iJlrich I 
273iTrematis punctostriata Hall 
274 " millipunctata Hall . 
275] " dyeri Miller 
276:Lingula cobourgensis Billings. 
277 " 
278 
2791 
280! 
281| 
282 
283 
daphne Billings. 
norwoodi James 
quadratij Eichwald 
riciniformis Hall 
n. ep 
n. sp 
n. sp 
284|Eingulella cinoinnatiensis H. and W. 
285|Leptobolus insigiii.s Hall 
286J " lepis Hall 
287;Fusispira subfusiformis Hall 
2881 " terebriformis 
289,Bellerophon bilobatus Sowerby 
290| " granistriatus Ulrich 
291! •' nautiloides Ulrich 
292 1 " planodorsatus Ulrich .. 
293 Bucania expansa Hall 
2941 " ? costata James I ] 
295|CvrtoIites carinatus Miller I | * 
296 Cyrtolites dyeri Hall 
297 
298 
299 
300 
301 
302 
303 
304 
305 
306 
807 
308 
309 
elegans Miller i I 
" magnus Miller i I 
" nitiduluH Ulrich | * 
" ornatus Conrad 
Microceras inornatum Hall 
" minutisslmum Ulrich 
Pleurotomaria ohioensis Hall 
" subconica Hall 
" subtilistriata Hall 
" trophidophora Meek 
Murchisonia augustina Billings 
" bowdeni Safford 
" gracilis Hall 
Glassta. Some of the specimens show further that the radiating striae 
which visually mark the surface are often very ob-scure and in rare cases 
entirely absent. Such smooth examples were collected near Versailles., 
Ind. 
