518 The Molluscan Family Planorhidae 



PLATE 141 



Shells of Planorbidae 



1. Tropicorbis pcdrinus (Miller). Rio Lope Castro, Parana, Brazil. W. L. Schmidt Coll. 

 U.S.N.M., 365157. 



2-4. Tropicorbis petencnsis Morelet. Laguna de Peten. Remate, Guatemala. U.S.N.M., 



382775. 

 5-7. Tropicorbis denticns (Morelet). Belize, Hondm'as. A.N.S.P., 123897. 

 8-11. Helisoma affine. Young. Hents Bay, St. Andrew, Jamaica. U.S.N.M., 378049. 

 12. Helisoma jovcale (Menke). U.S.N.M., 378040. 



13-18. Helisoma fovcalc (Menke). Frankfield, Clarendon, Jamaica. U.S.N. M., 400632. 

 19. Helisoma equatorium (Cousin). (Beach) Eben, Peru. U.S.N.M., 347900. 

 20.21. Helisoma equatorium (Cousin). Milagis, Ecuador. U.I., Z40572. 

 22,22). Helisoma equatorium (Cousin). (Labelled habiensis). Ecuador. Lea Coll. 



U.S.N.M., 126411. 



2i, 25. Helisoma equatorium (Cousin). Quito, Ecuador. Becjuacrt. M.C.Z.. 64965. 

 26-28. Planorbis turgidus Jeffr. Type. 'Georgia.' (Britain in error). U.S.N.M., 65265. 

 29,30. Helisoma peruvianum (Brod.). Callao, Peru. (Like Clessin's figures). U.L, 



Z40593. 

 31,32. Helisoma peruvianum (Brod.) {= moricandi Beck.). Brazil. U.S.N.M., 20702. 

 33,34. Planorbis pedrinus Miller (= Tropicorbis) . Moll. Blatt. n.s. 1. Plate 7. 

 35. Planorbis boetzke.^i Miller {= Gyraulus). Moll. Blatt. n.s. 1. Plate 7. 



