ARNOLD — THE PALEONTOI.OOY AND STRATIGKAPHY OF SAN PEDRO. 



417 



Purpura persicn 260 



saxicola 2S, 44, 55, SO. Ci/, 261 

 T^niDllv;.,,.. .SI 960 

 Pyramidella 82, 280 



•couica var. variegata 28, 44, 82, 280 



plicata 280 

 Pyramidelliila. 81, 269 

 Pyrgiscuhis 81, 277 



lamiuata 81, 277 

 Pyrgiscus 81, 274 



auricoma SI, 274 



crebritilata 81, 276 



latifundia SI, 275 



subcuspidata 81, 277 



teuuicula SI, 275, 276 

 Pyrgolampros SI, 278 



adleri 81, 280 



arnoldi 82, 279 



gibbosa 81, 279 



lowei 81, 278 



var. pedroana 81, 279 



mioperplicatulus 27S 

 Pyrgoxtelis 274 

 Pyrgostyhis 272 



R.ita 76, 177 



iindutala IS, .S7, 57, 76, 174, 177 

 Kaiiella 82, 287 



calif ornica 24, 25, 28, 31, 44, 63, 82, 287 



murkiformis 248 



plicala 248 



.spinosa 287 



Iriquelra 248 

 Bezithcerus secia vnr. tdulh 164 

 Rictaxis 77, 188 



jiunetocitlala 77, 188, 189 

 Himitla cucullata 341 



galcaia 341 

 Ringicardium 74, 139 



procerum 74, 139 

 Kissoa 83, 304 



acutelirata 28, 44, 55, 83, 305 



costulata 304 

 Rissoid.-B 83, 304 

 Sowtllia 197 



radiaia 197 

 Rupellaria 75, 155 



lamelli/era 23, 37, 75, 155 

 Sanguinolaria 76, 168 



californica 161 



nuttalli 27, 31, 37, 68, 168 



(Niittallia) uuttalli 108 



sordid a 161 

 Saxicavidfe 76, 182 

 Saxicaua carditoides 154 

 Saxidomus 75, 151 



aratus 18, 23, 25, 27, 31, 33, 37, 48, 55, 63, 75, 

 151 



(jracilis 151 



nuttallii 151 

 (53) 



Scala SI, 262 



bellastriata 28, 44, SI, 26.3, 264 



(Opalia) Ijorealis 266 



orebricostata 22, 23, 24, 28, 44, 55, 63, 81, 263, 

 265 



hemphilli 28, 44, 81, 263, 264 



biudsii 19, 22, 24, 28, 31, 45, 81, 263, 264, 265 



iudiauorum 15, 19, 22, 24, 25, 28, 31, 45, 81, 

 263, 264 



pretiosa 262 



tiucta 19, 22, 24, 25, 28, 31, .32, 45, 55, 63, 81, 

 263, 264, 265 

 Scalaria bettaatrhata 263 



borcalia 266 



crebricoslala 263 



liindsii 264 



hidianorum 265 



var. iincla 265 



subcoronala 264 



tincta 265 

 ScaIid,T3 81, 262 

 Scaphaudridae 77, 192 



Scaphopoda 19, 22, 24, 25, 28, 31, 47, 77, 185 

 Schizopijga caUfoniiana 231 



californica 231 

 Schizolhce.rus nuttalli 178 



scopali 75 



pouderosa 75 

 Scrobicularia biangulata 160 

 Sciirria mitra 318 

 Scutella 71, 91 



excentrira 91 



(Echinarachuius) exceutricus 91 



iuterliueata 16 



sfriatuln 91 

 Scutellid* 71, 91 

 Seila 82, 290 



assimilata 19, 4.5, 82, 290 

 Selachii 85, 346 

 Semele 76, 165 



decisa 21, 23, 27, 31, 38, 63, 76, 165, 166 



pulchra 27, 31, 38, 63, 76, 166 



var. montereyi 18, 38, 76, 166 

 Seiiielidai 75, 165 

 Septifer 73, 119 



bifurcatus 18, 38, 119 



heberti 119 



lampe 73 

 Serpulorbis 83, 299 



arenaria 299 



squamigerus 19, 22, 24, 25, 28, 31, 32, 45, 63, 

 S3, 299 



(Vermioiilaria) 299 

 Sigaretus 84, 316 



debilis 31, 45, 84, 316, 317 



ueritoideus 316 

 Siliqua 76, 172 



californica 173 



lucida 18, 21, 27, 31, 38, 63, 76, 172, 173 



nuttalli 173 



June 23, 1303. 



