416 EXPLANATION OF PLATES. 



FIGURE. PAGE. 



98. Melanopsis (Canthidomus) costata, Fer. Palestine, . 255 



99. Melanopsis prserosa, Linn. Mediterranean Region, . 255 

 100. Melanopsis (Melanoptycha) Bittneri, Neumayr. Ter- 

 tiary, Austria, ........ 255 



1. Faunus atra, Linn. Moluccas, ..... 255 



2. Melanatria fluminea, Gmelin. Madagascar, . . 255 



3. 4. lo spinosa, Lea. Tennessee, ..... 256 



5. Angitrema Duttoniana, Lea. Tennessee, . . . 256 



6. Angitrema (Lithasia) dilatata, Lea. Tennessee, . .256 

 1. Angitrema (Strephobasis) curta, Hald. Tennessee, . 256 



8. Pleurocera canaliculata. Say. Ohio River, . . .251 



9. Goniobasis impressa. Lea. Georgia, .... 251 



10. Goniobasis Boj^kiniana, Lea. Georgia, . . . 251 



11. Goniobasis Virginica, Say. Delaware River, . . 251 



12. Goniobasis (Eurycselon) Anthonyi, Budd. Tennessee, 251 



13. Pyrgulifera humerosa, Meek. Cret., Wyoming, . . 251 

 14-16. Schizostoma babylonicum. Lea. Coosa River, Ala., 251 

 11. Anculosa tseniata, Conr. Alabama, . . . .258 



19. Anculosa (Mudalia) dissimilis. Say. James River, 



Yirg., . . . 258 



20. 21. Rissoella diaphana, Forbes and Hanley. England, 258 

 22. Hyala vitrea, Forbes and Hanley. England, . . 259 

 28. Gabbia australis, Tryon. Australia, .... 260 

 24, 25. Rissoina Catesbyana. Cuba, . . . .261 

 26. Rissoina (Zebina) tridentata, Philippines, . . . 261 



21. Rissoina (Zebinella) elegantissima, d'Orb. Cuba, . 261 

 28. Rissoa costulata, Risso. England, . . . . 263 



Plate 12. 



29. Bithynia Leachii, Moquin-Tandon. France, . . . 260 



30. Tatea Huonensis, Woods. Tasmania, .... 259 



31. Stenothyra deltse, Benson. India, .... 260 



32. 33. Skenea planorbis, Fabr. England, .... 261 



34. 'Rissoina (Schwartziella) coronata, Pvecluz. Mauritius, . 262 



35, 36. Rissoina (Batoniella) Kerguelenensis, E. A. Smith. 



Kerguelen's Isl., ........ 262 



31. Rissoina (Phosinella) Sagraiana, d'Orb. Cuba, . . 262 



38. Barleeia rubra. Ads. England, ..... 262 



39. Keilostoma eximia, Desh. Fossil, Paris basin, . . 262 



40. Rissoa (Anabathron) contabulata, Frauenf. Australia, 263 



41. Rissoa (Zippora) Moutonii, Dupu3^ France, . . 263 



42. Rissoa (Pterostoma) tuba, Desh. Eocene, France, . 263 



43. Rissoa (Setia) pulcherrima, Jeffreys. England, . . 264 



44. Rissoa (Ceratia) proxima. Alder. England, . . 264 



45. Rissoa (Cingula) cingillus, Mont. England, . . 264 



46. Rissoa (Onoba) striata, Mont. England, . . .264 



