INDEX TO GENERA AND SPECIES. 



'241 



Physa squalida, 158 



Pilidium fiilvuin, 147 



Pinna, 14 



Planaxis atra, 72 



Planorbis doclivis, 159 



Fieldii, 159 



kermatoides, 158 



tumidus, 158 



Plectopylis achatina, 110 



Pleiodon jSIacmurtrei, 104 



Pleurotoma lirata, 68 



monilifera, 68 



Plicatula perimbricata, 16 



Pom us pyi'um, 152 



Posidonomya Blatchleyi. 18 



Pi'otoct'va bryonia, 123, 183 



chiragra, 121 



crocata, 123, 133 



elongata, 123, 135 



lambis, 122, 133 



millipeda, 123, 135 



pseudoscorpio, 



123, 134 



Scorpio, 123, 134 



violacea, 124, 135 I 



Proto Cornelliana, 164 



Pseud()hvalinaMazatlanica,201 



201 

 201 

 Pterocera, 20 



Pupa, 38 



Pupa palanga, 37 



Purpura cbocolatum, 26 



Pyrgula scalariforrais, 198 



milium, 

 pura, 



Radioconcha, 

 Radula denticuticosta, 

 Rffita gibbosa, 

 Ranella, 



Tampieensis, 

 Rhysota Chambertinii, 

 Rissoina balteata, 

 Rostellaria, 



47 



99 

 30 

 20 

 106 

 109 

 72 

 20 



Sanguinolaria Robertsii, 171 



I Scalar ia umbilicata, 76 



I Scambula porplana, 48 



I Scapliarca tcnuicardo, 39 



I Scarabus trigonus, 111 



i Sinsyclonema simplicia, 99 



I Spinigera, 19, 2 J 



Saxicava insita, 40 



incita, 101 



' Solemya triasina, 102 



ventricosa, 103 



j Spirifer obtusus, 17 



I Spissula catilliformis, 108 



dolabriforrais, 108 



Strigilla prora, 30 



Succinca lineata, 200 



inflata, 158 



recisa, 158 



Sillimani, 200 



Stretchiana, 200 



Tebennophorus auratus, 153 



Terebra assimilis, 67 



bipartita, 86 



costellifera, 66 



i lauta, 66 



Peasei, 86 



propinqua, 66 



rosacea, 65 



sculptilis, 64 



suffusa, 65 



sulcata, 67 



Terebratula glossa, 42 



Torcula, 45 



Tornatellina byalina, 157 



interstriata, 157 



Torinia perspectiviuncula, 80 



sulci f era, 79 



trocboides, 86 



Trigonarca cuneiformis, 98 



passa, 43 



Triton intermedius, 74 



Tritonidea fumosus, 86 



undosus, 86 



Tritonium pernodosum, 26 



Trocbus Byronianus, 82 



