392 The Molluscan Family Pla)iorbidae 



PLATE 78 



Shells of Planorbidae 



1,2. Tropicorbis mcJlcus (Lutz). Upper and under side of animal. From Lutz, 

 fig. 5, a, c. 



3. Tropicorbis nigrilabris (Lutz). Animal from above. Lutz, fig. 4, c. 



4. Tropicorbis nigrilabris (Lutz). Animal from above, lighter in pigmentation than 



fig. 3. From Lutz, fig. 6, c, mislabeled Planorbis nigricans by Lutz. Figures 1-4 



from Mem. Inst. Oswaldo Cruz, vol. 10, plate 16. Figures greatly enlarged. 

 5-7. Helicorbis U7nbilicalis (Benson). Figures 5, 6, Hongkong, China. Baker coll., 



2756; fig. 7, Canton, China. Baker coll., 2751. X3. 

 8-10. Pingiella peipinensis (Ping and Yen). Peiping, China. Baker coll., 3975. X3. 

 11-13. Drepanotrema lucidum (Pfr.). Laguna del Bili, Alacranes Mts., Cuba. M.C.Z., 



129991. X3. 

 14-16. Drepanotrema hoffmani F. C. Baker. Isabela, Puerto Rico. Types. Baker coll., 



3976. X3. 

 17-19. Drepanotrema cultration (Orb.). Painters Pond, Painters, Antigua. U.S.N. M., 



272282. X3. 

 20,21. Parapholyx effusa (Lea). Sacramento River, California. Probably type lot. Lea 



coll., U.S.X.M., 121167. X3. 

 22. Parapholyx effasa (Lea). Sacramento River, California. Lea coll., LT.S.N.M., 



121133. X3. 

 2Z. Carinif ex neu'berryi {Leu). Canoe Creek, California. U.S.N .M., 56405. X3. 

 24. Carinifex newberryi (Lea). Canoe Creek, California. Type. Lea coll., U.S.N.M., 



9256. X3. 



25-26. Carinifex newberryi minor Cooper. Clear Lake, California. Lea coll., U.S.N.M., 

 121025. X3. 



