GENERAL INDEX. 135 



Psammodus crassidens, St. J. & W VII. 218*,220t 



glyptus St. J. & \V : YII.209* 



grandis St. J. & \V VII, 211* 



lovianus St. J. & W TEE, 207*, 217 



plenus St. J. & W YII.213*,221 



porosus Ac? 11,107*; VII, 199, 209,217, 219. 222 



reticulatus N. & W 11,109*; VII.218,224* 



rhomboideus N. & W.) 11,110*: YH.184* 



rugosus Ag. (?) II, 108*. 110 ; VII, 218 



(?) semicylindricus N. & "W 11,109*; VII, 184* 



semireticulatus N. & W 11,111 



springeri St. J. & W YII,202t* 



tumidus St. J. & W VII, 205* 



turgidus St. J. & W VII,206*,207t 



Psephodus Agassiz VI, 299, 337, 417; Yn,61,63 



crenulatus N. \- AY VTI,67,69,74 



latus St. J. & W VII.72* 



lunulatus St. J. & W VII, 74* 



magnus Ag VI, 419; Vn,63,66,69 



obliquus St. J. & W VII,66*,72 



placenta N. & W VII, 69* 



(?) reticulatus St. J. & "W VI, 417* 



" (?) symmetricus St. J. & W VII, 71* 



(Pteria) morganensis M. & "W V,57tj 



""(?) subpapyiacoa M. & \V 111,438 



" (?)undulata M. & W 111,456 



Pteriida? 11,337 



Pterinea Goldfuss 11,339: HI, 338, 3*4. 358, 437, 456 



cardiif ormis Hall n, 156 



(Monopteria) gibbosa II, 340* 



( ) morganensis M. & V." V.576 



( " ) negiecta McCh 111,358 



retroflexa (Wahlenb.) m,355 



" (?) rhomboidea (Hall) 111,355 



su bpapyracea M. & W ni, 43 7* 



- subplana (Hall) 111,355 



thebesensis M. & \V 111,354* 



" (?) undulata M. & W m, 456* 



Pteronites McCoy 131,338 



Pteropoda 111,341; Y,520,541; Vn,325; Vm,134 



Pterotocrinus Lyon and Casseday 11,288; Y.559 



chesterensis M. &; W n,2b2*,293t 



crassus M. & W n,290*,292t 



depressus L. & C V.559* 



pyramidalis L. &. C JQ.293 



Pterygotus Apassiz Ill, 545 



(Ptilionella Hall) VIH,368 



Ptilodictya Lonsdale VHI, 3 90. 496, 531 



( " ) cosciniformis, Nicholson VIII, 532 



( " expansa Hall) VIII,391f 



( " ) fenestelliformis Nicholson VHI, 526* 



lanceolata Goldfuss Vin,391t 



maculata Ulrich Vin,317t 



magniflca S. A. Miller.. VUI,3iHt 



nodosa (HaU) VHI.304 



pavonia d'Orbigny Vin,393,671 



variabUis Ulrich... VIII, 304t, 317+ 



