142 bulli::tin 37, united states national museum. 

 Table Y. E. — List of Gastropoda — Contiuued. 



Ser. 

 Mo. 



Narae and autliority for specie.s. 



PI. 



Figs. 



Alt. 



or 



Lon. 



Kange 



in 

 depth. 



Northern 

 extreme rauge. 



755 



Family MODULID^. 

 Genus MODULUS Gray. 











Hatteras 



Florida Keys. 

 Florida Keys. 



Florida Str.. 



756 



var. floridanns Conrad 











757 



var. eaten ulatns Philippi 











758 



Family TRICHOTEOPIDJE. 

 Genus TRICHOTROPIS Sowerby. 



Subgenus Mesostoma Deshayes. 

 M. migrans Dall . . 



29 

 29 



8 

 7 



9.25 

 9.0 



80 

 785 



759 



Subgenus Dolophanes Gabb. 

 D. Gdbhi Ball 



760 



D. columbella Dall . 



GulfofMex. 



Hatteras 



Cape Cod ... 



Hatteras 



Hatteras 



Florida Keys. 



Cape Cod 



Key Largo . . 



Hatteras 



Tampa 



Cape Fear... 



Tampa 



Tampa 



Charlotte H . 



Gulf of Maine 



Hatteras 



Gulf of Mex . 

 Gulf of Mex . 

 N. Atlantic . . 



761 



Family C^CID^. 



Genus CSCUM Fleming. 



C. floridanuni Stimpson 









-1^ 



762 



C. pulchellum Stimpson .. ......... 



50 



22 





763 



C. iustructum De Folin 



764 



C. bipartitum De Folin .... . 











765 



c 











766 



C. Cooperi Smith 



43 



8 







767 



C. decussatum De Folin 







768 



C. carolinianum Dall .... 









-h 



769 



C 









770 



C. glabrum Montagu 











771 



Subgenus Meioceras Carpenter. 

 M. Deshayesi i De Folin . 











772 



M. nitidum Stimpson 











773 



M. undulosum De Folin 











774 



Family SEGUJ^NZIID^. 



Genus SEGUENZIA Jeffreys. 



S. monocingulata Segucnza 



62 



88,89 



5.0 

 3.5 

 4.5 



m 



1 .) (j 8 

 .•?R2 



« 75' 



775 



S. trispinosa Watson 



776 



S. ionica Watson .. 







777 



S, 







778 



S. carinata Watson 



.... 





4.0 



