oo 



lALIFOUNU At'AUKMY Ol' StUKNCES. 



A'l''on /lunetofirlala 

 milium ilonim 

 mttium ifuitdriXlalum 

 Bittium ruijalum 

 Cireum i-ati/omirum 

 i'lreum rrr'hrii-iwtum 

 CfKuni nuifjHum. 

 Caltiosioma ranaliculalttm 

 Callio$lotna eoflnliim 

 Cattiotloma Irirolor 

 1'rritKiii<a rali/omira 

 (^htorontoma Juufbrnlt 

 Chlorofloma var. ^ubaprrtum 

 ChlorMtoma vnr. liijutatiim 

 ChryAOilomut tahulntun 

 i'latkurrlla eonrailiaiin 

 Ctipitirlla himtirutala 

 Cli/iiilrtla callomanjinala 

 Culumbflla rali/ornlann 

 Columhrlla rhrynaUoidra 

 Columhilla ijnutaiKila 

 Cotumb*tla var. earinata 

 Columbflta (v6rro«a 

 Conuj cali/omicu» 

 Crepidula aruleata 

 Crrplduln mliinca 

 Crfpiituta navic lloid' $ 

 Crtpidttta onyx 

 Crucibulum tpinofum 

 Drill in hrmphilli 

 Drillia var. prnirltlala 

 Drillia toroia 



OASTUOrODA. 



Kulimn rniVrifM 

 Fiuiiridrn wipfrit 

 KtMurtllii ivlratio 

 Ualrrut mammillnrit 

 Hipponyx ernnioidrt 

 Hippoiii/x lumttm 

 liiapi» fenrslrata 

 Lacuna porrrcia 

 Lrplothyra rar/itnlrri 

 Littorina planari» 

 Littorina srutulfita 

 Manijilia amjutriln 

 Martjarila vnr. knrchii 

 Marijarilu var. nodo»u» 

 Margarita vnr. pedroana 

 Marijiiiella jf Willi 

 MiliimpuH olivarcus 

 Mitra miiura 

 ilonociroa tngonalum 

 Nattga /onnata 

 Nasfa mendica 

 NoKsa var. rooperi 

 Naxna perpimjuis 

 Natma legula 

 Neverila recluziana 

 Ocinebra barbartnuin 

 Ocintbra inlerfosaa 

 Ocinebra var. anpera 

 Oeinebra var. ccrriletuin 

 Ocinebra poulsoni 

 Odostomia gouldii 

 Odonlomia lenuit 

 Olivclla btplicata 



OlivrUa intorta 



Olivellii piilronna 

 t'nchi/jioma intn/uale 

 I'liludfntrina curia 

 /'aludcslrina iiloketi 

 I'haxianella compta 

 Physa htteroHropha 

 Planorhis lumiduf 

 PUinorbiK vermicularis 

 I'll urotoma perversa 

 Scala crebricostala 

 Scala hindsii 

 Srula indianorum 

 Scala tincia 



Si r pulorbi'a aijuamigerut 

 TaraniH tirongi 

 Teribra simplex 

 Tornatina crrialis 

 Tornatina culcitella 

 Trophon pedroana 

 Turhonilla anranlia 

 Tiirliunilla crebrijilata 

 Turhonilla laminata 

 Turbonilla lowei 

 Turhonilla muricata 

 Turhonilla timilis 

 Turhonilla stearnsii 

 Turhonilla suhcuspidaln 

 Turhonilla Unuicula 

 Turhonilla var. stylina 

 Turhonilla Iridmta 

 Turritella eooperi 

 Volvarina varia 



8CAPH0P0DA. 

 Drntalium hexagonum Denlalium indianorum 



CRUSTACEA. 

 Balanus concavut 



KCHINOIDEA. 

 Echinarachniut excenlricun 



This fauna comprises one hundred and forty species, of which thirty-seven are 

 pelecypods, ninety-nine are gastropods, two are scaphopods, one is a crustacean, and 

 one an echinoderm. The fauna of the lower beds of the San Pedro bluffs approaches 

 a little nearer that of the upper San Pedro series than does the fauna of the same 

 formation on Deadman Island. This may mean that part of the lower San Pedro 

 beds was removed from the Deadman Island deposit before the deposition of the 

 upper Plei.stocene strata. 



The following species occur in the lower San Pedro deposits of the San Pedro 

 bluffs which have not been reported from the same horizon of Deadman Island: 



