﻿PLANORBIS— Plate VIT. 



The pale Planorbis. Shell rather tumid, smooth, 

 pale horn, flattened on each side; spire narrow, 

 whorls four, quickly increasing, last rather 

 broad, sloped above, inflated below the middle ; 

 lower disc a little flattened ; aperture obliquely 

 subovate, lower margin sinuously produced, 

 depressed. 



C. B. Adams. Basl. Proc. Nat. Hist. Vol. II. p. 102. 



Hab. Jamaica. 



Species 57. (Pig. a, b, Mus. Brit.) 



Planorbis Chilensis. Pla. testa tumidiusculd, alba, 

 ■fiiperne complanatd ; rnfm coiicavd ; anfradibus 

 'lidnis, mediocriler cresaentibm, ultimo titmido; 

 aperttird magna, subquadratd, margine inffirim-i 

 rectmscnlo. 



The Chili Planorbis. Shell rather tumid, white, 

 flattened above, concave below ; whorls five, 

 moderately increased, last tumid ; apertnri' 

 large, rather square, lower margin rather 

 straight. 



Anton ? MS. Brit. Mus. 



Hab. Chili. 



Species 58. (Fig. a, b, Mus. Brit.) 



Planorbis Lanieranus. Pla. testa depressd, corneo- 

 castaned, translucidd, laevigata ; spird compressd, 

 j)arvd; aiifractibus quaternis, ultimo siipernh la- 

 tiascuh, infra angustiori, aperturd angulatd. 



Lanier's Planorbis. Shell depressed, horny chest- 

 nut, translucid, smooth ; spire compressed, 

 small ; whorls four, last rather broad above, 

 rather narrower below. 



D'Orbigny. Moll. Cuba. 



Eab. Isl. Cuba. 



Species 59. (Fig. a, b, Mus. Brit.) 



Planorbis Rossmasleri. Pla. testd parvd, compressd, 

 fi'.rrugined ; spird subeomplanatd, anfradibus qua- 

 fernis, rapide crescentibus, rotundis ; dixro infcrioi-i 

 II nibilicato ; aperturd oblique irvatd. 



Rossm.\sler's Planorbis. Shell small, cimipressed, 

 ferruginous ; spire rather flattened, whorls four, 

 quickly inci-eased, roundetl ; lower disc urabili- 

 cated ; aperture obliquely ovate. 



Schmidt ? Adams, Genera of Shells. 



Hab. Anerswald, near Leipsic. 



