271 



6341 thermalis, Boube, 



6342 truncatula, Mull., 



6343 " var., 

 6344 



umbilicata, Adams, 



6345 umbrosa, Say, 



6346 " var., 



6347 Vahlii, Beck, 

 Virginiana, Lam., 



Carniola, 

 12 France, 



New Bedford, 

 New York, 

 Connecticut, 

 Greenland, 

 4 Virginia, 



Villa Cat., p. 82. 



Pfr. Syst. Anord., pi. 4, f. 27. Buccinum tranoatulum. 



Turt. Man., f. 108. Lymnaea fossaria, Turt. 



Drap. Moll., pi. 3, f. 57. Lymnaea minuta, Drap. 

 Jour. B. S. N. H., 2, pi. 3, f. 14. is Lymnaea caperata, Say. 



Hald., pi. 7. 



Jour. Ac. N. S., 2, p. 167. Lymnaea elongata, Say. 



Moll. Ind., p. 4. Limnophysa Vahlii, Beck. 



Encvl. Meth., 2, p. 362. is Lymnaea catascopium, Say. 



GENUS AMPHIPEPLEA. Nils S OU. 



6348 Cumingiana, Pfr., 



Lucon, 



Zool. Proc., 1845, p. 68. 



GENUS PHYSA. L O, 7JI d r C k . 



6349 acuta, Drap., 



6350 ancillaria, Say, 



6351 " var., 

 aurea, Lea, 



6352 castanea, Lam., 



6353 contorta, Mich., 



6354 distorta, Hald., 

 elliptica, Lea, 

 elongata, Say, 



6355 fontinalis, Linn., 

 .6356 fragilis, Mighels, 



6357 gyrina, Say, 



6358 " var., 



6359 heterostropha, Say, 



6360 " var., 



6361 hypnorum, Linn., 



6362 " var., 



6363 marmorata, Guild., 



6364 Novae Hollandri.Blain., 



6365 obesa, De Kay, 



6366 osculans, Hald., 



6367 " var., 



6368 princeps, Phil., 



6369 rivalis, Sowb., 

 rivularis, Phil., 



6370 scalaris, Jay, 



6371 Sowerbyana, D'Orb., 



8 Sicily, 

 Pennsylvania, 

 Ohio, 

 Virginia, 



1 Garonne, 



9 Algiers, 

 St. Louis, 

 Indiana, 

 New York, 



2 France, 

 Maine, 

 Ohio, 

 Indiana, 



7 New York, 

 Virginia, 



3 France, 

 New York, 

 St. Vincent, 

 New Holland, 

 Mohawk River, 

 Mexico, 



Yucatan, 

 Chili, 

 Sicily, 

 Florida, 



Drap. Moll., pi. 3, f. 10, 11. 



Hald., pi. 3, f. 1-10. 



Sillim. Jour., 35, pi. 3, f. 3. 



Trs. Am. Ph. S., 6, pi. 23, f. 106. 



Sowb. Gen., f. 7. 



Mich. Coq. Alger., f. 26, 27. 



Hald., pi. 5, f. 1-3. 



Trs. Am. Ph. S., 5, pi. 19, f. 83. 



Jour. Ac. N. S., 2, p. 171. 



Sowb. Gen., f. 8. 



Hald., pi. 3, f. 11-13. 



Hald., pi. 4, f. 1-6. 



Trs. Am. Ph. S., 5, pi. 19, f. 83. 



Hald., pi. 2, f. 1-9, pi. 1. 



Trs. Am. Ph. S.,6,pl.23, f. 103. 



Hald., pi. 5, f. 4-9. 



Jour. Ac. N. S., 2, p. 171. 



Zool. Jour., 3, p. 534. 



Blain. Mai., pi. 37, f. 3. 



N. H. N. York, pi. 5, f. 86. 



Hald., pi. 2, f. 11, 12. 



Chenu, pi. 1, f. 3. 



Sowb. Gen., f. 9. 



Phil. En. Sic., pi. 9, f. 1. 



Hald., pi. 4, f. 9. 



Physa Sayi, Tappan. 



is Physa heterostropha, Say. 



Physa rivularis, Phil. 



is Physa gyrina, Say. 



is Physa hypnorum, Linn. 



Bulla fontinalis, Linn. 



Physa elliptica, Lea. 



Physa aurea, Lea. 

 Bulla hypnorum, Linn. 

 Physa elongata. Say. 



is Physa contorta, Mich. 



