134 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 53 



Pago 



bottnica (Wiman) 68 



dartoni, new species 67, pi. 7, fig. 14 



ella (Hall and Whitfield) 67, 69 



ella onaquicnsis , new variety 67 



elongatus, new species 68, pi. 7, fig. 12 



escasoni ( Matthew) 64 



citglypJms (Walcott) 67 



Unlandcnsis (Walcott) 68, 6g 



iphis Walcott 69 



notchcnsis, new species 69, pi. 7, fig. 13 



stoncanus (Whitfield) 69 



ivasatchcnsis, new species 69, pi. 8, figs, i and \a 



occidens, see Mickuntzia. 



OlcncUits 60, 63, 81. 86, 87 



gilbcrii Meek 86 



Olcncll'.is kjcriilfi zone, fossils in 83 



Onaqui Range, Utah, fossils in 68 



ophirciisis, see Acrotreta. 



ophircnsis dcscendens, see Acrotreta. 



ornatclla, see Micromitra (Iphidella). 



Orr formation, Utah, fossils in Qi, 92 



Orthis Dalnian 102, 103, 104 



(cquivah'is [Hall] 103 



callactis Dalnian 102 



calligramma 103 



fissicosta Hall 103 



jamesi Hall 103 



plicatclla 103 



remnicha Winchell 103, 104 



sinuata 103 



siibqiiadrata 103 



triccnaria 102 



triplicatclla Meek 103 



(or OrtliisUia), sp., Etheridge 109 



{Dalmanella) parva 104 



(Plcctortliis) Walcott 102 



Ovando quadrangle, Montana, fossils in 57 



pannula, see Micromitra {Iphidella) . 



pannitla iiialadciisis, see Microuiiira (Ipltidclla) . 



Paradoxidcs 89. 104 



Paradoxidcs zone, fossils in 78. 104 



parva, see Orthis (Dalmanella). 



parvus, see Diccllomus and Obohts. 



(Patcrina) Beecher, subgenus of Micromitra 58 



pea lei, see Micromitra. 



perfectus, see Obolus (Fordinia) . 



Pioche, Nevada, fossils near 86, 87 



Pioche formation, Nevada, fossils in 86, 87 



Plectorthis [Grabau and Shinier] 102 



Hall and Clarke 102, 103, 104 



plicatclla, see Billiugsclla and Orthis. 



