150 BULLETIN 37, UNITED STATES NATIONAL MUSEUM. 



Table V. E. — List of Gastropoda — Continued. 



Ser. 

 No. 



839 



840 

 841 

 842 

 843 



844 

 845 

 846 



847 

 848 

 849 

 850 

 851 

 852 

 853 



854 



855 

 850 



857 

 858 



859 



860 

 861 



862 

 863 

 864 



Xaine anil authority for species. 



PI. 



Figs. 



Alt. Range 



or in 



Lou. (leptii. 



Eissoa 



R. acuticostata Dall 



E. pyrrhias Watson 



E. xanthias Watson 



E. sycgenes Verrill 



Genus BENTHONELLA Dall. 



B. gaza Dall 



B. Fischeri Dall 

 B, nisouis Dall .. 



Genus RISSOINA Orbigny. 



E. decussata Montagu 



E. laevigata C, B. Adams 



E. bryerea Montagu 



E. Chesnelii Michaud , 



E. mnlticostata C. B. Adams 



E. Sagraiana Orbigny 



E. cancellata Philipjji 



Family ADEOEBID^. 



Genus SKENEA Fleming. 



S. planoibis Fabvici us 



Genus ADEORBIS Wood. 



A. eu pranitidus Wood 



var. Orbignyi Fischer 



A. Beaui Fischer 



A.? olivaceus Verrill 



19 



42 



Genus CLATHRELLA Recluz. 



C. naticoides Dall 



Family AMPULLAElIDiE. 

 Genus AMPULLARIA Lam. 



A. depressa Say 



A. caliginosa Eeeve 



Family ASSTMINEID^. 



Genus ASSIMINEA Leach. 



A. Auberiaua Orbigny . . 

 A. coucinna C- B. Adams. 

 A. 



52 



41 



44 



10 



18 



7,7a 



3.7 

 3.0 

 2.5 

 3-.0 



6.5 

 5.3 

 9.0 



4.0 



G.l 



7 »< 



14i 



i6i 



940 



22 



Northern 

 extreme range. 



Hatteras ... 

 Hatteras ... 

 Florida Str . 

 Florida Str . 

 Hatteras ... 



Fcrnandina.. 

 Cedar Keys.. 

 Gulf of Max, 



Cape Fear... 

 C. Lookout.. 

 F'^lorida Keys 



Hatteras 



Key Largo . . . 

 Florida Str.. 

 Florida Keys 



Arctic Sea. 



N. Atlantic .. 



Norway 



Florida Keys 

 Gulf of Maine 



Hatteras 



Georgia 

 Florida 



Cedar Keys. 

 Key West . . 

 Tampa 



