357 



Indrx, Vol. II 



63 



placenta 312 



scapha 334 



scapha 335 



pi. 23, fig. 4. 



Northern Lignitic group 227 



Nucula corbuliformis 17, 19 



20, 21, 22, 24 42. 

 diffidens 17, 19 



20, 22, 32, 42, 24, 25, 26 

 29. 



lamella ta 42 



magnifica 242 



ovula 242 



pi. 14, fig. 7. 



Nuculana protexta 244 



Nuculites oblongus 28 



triqueter 42 



triqueter 29 



Nuttall, Thos 115 



Odontostomia insignifica Jjg 



pi. 2, fig. 8. 



Oneonta sandstone 6 



Ontario county, fauna of 10 



Orange sand or Lagrange group 

 208. 



Orange sand 227 



d'Orbigny 310 



Orthis impressa 18, 19 



21, 24, 26, 36. 



tioga II, 12 



vanuxemi 26 



Orthoceras anguis 39 



bebryx var. cayuga 17, 18 



19, 21, 22, 23, 25, 26, 31 



40. 



demus 19, 40 



farcimen 319 



f ulgidum 39 



leander 25 



39. 40- 

 pecator 17, 21 



23, 30, 39- 



pretextum 40 



parvula 19 



Ostrea alabaniiensis 233 



pi. 12, fig. 7. 



bellovacina 229 



carolinensis 230, 23 1 



compressirostra 215, 221 



Ostrea compressirostra 229, 231 



pi. 7, 8, 9; pi. 12, fig. I, 



crenulimarginata 230, 231 



emarginata 232 



pulaskensis 197 



pulchra 230 



seltcsfoTinis 233 



pi. 12. fig. 2. 

 var. sylvcsrupis 230 



pi. 10, II. 



thirsse 223 



thirsa 232 



pi. 12, fig. 5, 6. 

 trigonalis var. sylvcerupis 



230. 



pi. 10, II, 12. 



Ozark, Lignitic beds at 224 



Lower Claiborne at 224 



Page, C.C 115 



W. N 116 



W. T 119 



Palgeoneilo brevis 30 



constricta 17, 19 



20, 21, 22, 23, 24, 26, 27 

 29, 30, 31. 32, 42. 



var. flexuosa 43 



emarginata 28, 43 



filosa 17, 18 



19, 20, 21, 23. 24, 26, 28 



29. 43- 



maxima 19, 20 



plana 19, 20, 



21, 22, 26, 31, 43. 



Panenka 18 



Paracyclas lirata stage 13 



Parker, W. K 304 



308, 310. 



W. T 116 



Peale, A. C 116 



Pechin, E. C 116 



Peckham, S. F 117 



Pedlen alabamensis 237 



calvatus 235 



claibornensis 235 



corneus 235 



deshayesi 237 



greggi..... 223 



pleuronecles 236 



scintillatus 235 



Pe6lunculus idoneus 224 



PeBjinculus idoneus 241 



pi. 14, fig. 5, a, 6. 



stamineus 242 



Peeble's landing 223 



Penrose, R. A. F 117 



on Tex. Tert 198 



Periplonia butleriana 266 



pi. 20, fig. 13, a. 

 Phacops rana 30, 46 



