INDEX. 



145 





PAGE 



YORKSHIRE SHE 



LLS. 



Pecten peregrinus 

 personatus 



9 

 11 



Astarte elegans 



PAGE 



. 135 



retiferus 



9 



minima 



. 134 



vagans 



8 



Avicula Braamburiensis 



. 129 



Perna rugosa 



. 25 



Munsteri 



. ib. 



Pholas oolitica 



.. 126 







Pholadomya acuticosta 



. 121 



Cucull/ea caucellata 



. 132 



Heraulti 



. 124 



obliqua 



. 132 



Saemanni 



. 123 



Cyprina dolabra 



. 135 



socialis 



. 122 







solitaria 



, 124 



Goniomya V-scripta 



. 140 



ovulum 



. 122 



Gresslya peregriua 



. 139 



Pinna ampla . 



. 31 







cuneata 



. 32 



Hinnites abjectus 



131, 125 



Placunopsis Jurensis 



6 







ornatus 



7 



Isocardia cordata 



. 135 



radians 



. ib. 







socialis 



. ib. 



Lima punctata 



. 130 



Plicatula fistulosa 



15 







tuberculosa 



. ib. 



Myacites aquatus 



. 139 







Beanii 



. 136 



Quenstedtia oblita 



. 96 



decurtatus 



. 137 







gibbosus 



. 138 



Tancredia axiniformis 

 angulata 

 curtansata 

 brevis 

 planata 



. 93 

 . 94 



. 93 

 . 92 

 . 94 



Scarburgensis 

 securiformis . 

 Mytilus cuneatus 

 Leckenbyi 

 ungulatus 



. 138 

 . 136 

 . 131 

 . ib. 

 . 132 



truncata 

 Thracia curtansata 



. 92 

 . 110 



Ostrea Marsha 



. 126 



Studeri 



: . ib. 







Trichites nodosus 



. 35 



Gryphea mima 



. 127 



Trigonia costata, var. p 



ullus . . 58 







var. elongata 



. 60 



Pecten demissus 



. 127 



duplicata 



. ib. 



Perna rugosa 



. 128 



flecta - 



. ib. 



Pholadomya ovalis 



. 141 



Goldfussi 



. 56 



Piiolas costellata 



. 142 



imbricata 



. 63 



pulchralis 



. 141 



impressa 



. 61 



Pteroperna plana 



. 128 



Moretonis 



• 57 







Phillipsi 



. 62 



Quenstedtia levigata . 



. 135 



subglobosa . 



. 55 











Trigonia decorata 



. 133 



Unicardium impressum 



. 73 







parvulum . 



. 74 



Unicardium depressum 



. 133 



varicosum . 



. 73 



gibbosum 



. 132 



19 



