INDEX OF GENERA AND SPECIES. 



323 



PagP. 



Trachyf.ardinm !)!) 



Traclu ceras 110, 239 



judicaricum 110, ^DO 



var. subaaperum . 110 



whitiieyi 110,239 



Traih \ ceratidao 110, iJ:J9 



Trarli.vdomia 46 



Trachvtriton 49,102 



vinculum 49, 102 



Trapezium 260,202 



bellefourchensis 360, 262 



microneaia 70,143 



subequalis. :260, 262 



truncat um 143 



Trenaatis 126,129 



pannulua 136.1 29 



Trematocrinus 23, 42 



flscellus 33 



Trematodiscua 37, 42, 104 



Trematospira 57, 193 



? irabiioata 57 



infreqnena 103 



Trial thnia becki 187 



Triehopteris 331 



fllamentosa 331 



gracilis 331 



Trigonarca 98,267 



(Breviarca) exisrua 98 



J salina^nsis 98 



? siduxensis 98 



cnneiformis 267 



transversa 267 



Trigonatae 34 



Trigoiulla 100 



Tri jionellites 35 



Trigonia ... 30, 33, 92, 133, 164, 207, 209, 218, 236, 208 



alta 307 



americana. 104 



cenilea 36S 



conradi 33, 23 



crenulata 2 j5 



cnneiformis 307 



distans 310 



emoryi 218 



eufftulensis 208 



evansana 17 



evansi 92 



lorentii 337 



montanaensis 104 



mortoni 36S 



pandiiosta 30 



quadraugularis 336 



texana 31S 



syriaca 307, -09 i 



Trigouiid* 30, 32, 33, 111, 132, 133, 208 



Trigonotrtta 31, 57, 58, 89 



Trilobita 31,39,90,179,260,261 



Trilobites 28, 148, 149, 249 



Trimt-rella 8ii 



grandis 80 



oliioeusis 80 



Triplesia 80, 190 



calcifera 190 



ortoni 80 



Triton 216 



Page. 



Tritonidre 102 



Tritonidea 103 



Tritonifusus migrans 50 



?tenuiliiieafus 49 



Tritonium diogoensis 222 



TrorhactcBon 29 



Trochactreonina 29 



Trofhidaj 102, 180,264 



Trochita 212,214,217 



antirjua 67 



carbonaria 40 



costtllata 317 



diegoana 313,214 



trochiformis 221 



Trochoceras 39,79 



baerl 39, 79 



Trochonema 55. SO 



tricarinata 67, 80 



umbilicata 55 



Trochus 180 



lonticiilaris ? 248 



(Oxystele) euryostomys ISO 



Tropidina 35, 107 



Tropidiscns 106 . 



Tropidocardium 99 



Tropidoleptus 58 



carinatus 58 



Tuba?bcUa 48 



Tubicola 35,105,135 



Tiibipora lamellosa 347 



Tubulostium dirkbauti 157 



Txidicola ? dalcotonsis 49 



(Pyropsis) bairdi 49 



Tulotoma 138, 162 



thompsoni 138, 162. 109 



Turbinolia 218 



goldfnssii 220 



stokcsii 220 



texana 318 



Turbo 227, 258 



glabra 50 



guadalupensis 358 



ht'licinus ? 258 



liueatus 221 



mndgeanus 7© 



nebrascen.-iis 14 



palndinaeformis 331 



tenuilineata 48 



tenuilineatus 14 



tcxanus 358 



Turbonilla 134, 143 



(Chemnitzia?) coalvillcnsis 77, 143 



melanopsis 134 



maclurii 220 



Turnus 101,137 



(Goniocbasma) stimpsoni 101 



sphenoidrus 137 



(Xylopliagella) elegantulus 1H 



Turricula 103 



Turrilites 49 



cheyennensis 49 



(Ilelicoceras) cocbleatns 18 



?umbilicatu8 IS 



Tuiris 103 



minor 103 



