208 BULLETIN 37, UNITED STATES NATIONAL MUSEUM. 



Page. 



Cilicbnella 86 



bidentata 86 



oryza 86 



Cylindrobulla Beaui 88 



C j'matosyrinx .' 98 



Cymbuliidas 82 



Cymbuliopsis 82 



Cynodonta 110 



capitcllutn 110 



muricata 110 



Cypraja 136 



cinerea 130 



cxantbenia 130 



flaveola 136 



spurca 136 



Cyprajidaj 136 



Cyprina 54 



islaudica 54 



Cyrena 56 



carolinensia D6 



floridana 68 



Cyrenellid£B 50 



Cyrenoidea 50 



floridana 50 



Cythara 100 



Bartlettii 100 



cymella 100 



Cy therea 50 



albida 56 



con vexa 50 



hebrasa 50 



idonea 56 



obovata 56 



Simpsoni 56 



Dacrydium 38 



vitreum 38 



Dalium 132 



solidum 132 



Daplinella 100 



calyx 100 



corbicula 100 



data 100 



liyperlissa 100 



leucophlegma 100 



limacina 103 



limnEeiformis 100 



morra 100 



pompbolyx 100 



reticulosa 100 



retifora 100 



Sofia 100 



Delphinulidce 164 



Dcntaliidae 76 



Dcntalium 70 



agilo ." 76 



antillarum 76 



ca'amus 76 



callipeplum 76 



-callitbrix 76 



.candidum 76 



capillosum 76 



carduus —70 



ceraa 76 



ceratum 76 



comprcssum 76 



rage. 



Dentalium — Continued. 



disparile , 



ensiculus 



filum ; 



Gouldii 



laqueatuni 



leptum 



luatara 



occidentale PI. 6^ 



ophiodon... 

 pcrlongnm . 

 platamodes 

 sericatuin . . 

 taphriuni .. 

 teres 



Dentistyla 162 



Detracia 92a 



bulloides - 93 



Diacria ' &2l 



Diapbana 8G 



debilid 86 



Uiastoma 140 



Dibranchiata 174 



Dillwynella 160 



modesta ; ICO 



32 



32 



32 



50 



50 



52 



52 



52 



52 



52 



52 



72 



30 



30 



30 



30 



PI. 46 



160 



160 



132 



133 



90 



50 



50 



50 



156 



90 



96 



134 



134 



134 



134 



142 



142 



142 



58 



58 



Diojya 



argcntea 



DimyidsB 



Dione 



dione 



Diplodon ta 



semiaspera 



soror 



subglobosa 



turgida 



Diplodontida3 



Diplotbyra 



Discina 



DiscinidiB 



Discinisca 



antillarum 



atlantica .'. 30, 



Discopsis 



om.alos 



Distortrix 



reticulata - 



Ditremata 



Divaricella 



dentata 



quadrisulcata 



Docoglossa 



Dolicbotoma 



■viabrunnea 



DoliidsB 



Dolium 



galea 



perdix 



Dolopbanes 



columbella 



Gabbi 



DunacidcB 



Donax 



denticulatus 



fossor 



obesa 



