PLANORBIS. 215 
PLANOBBIS. 
SYNONYMY AND REFERENCE TO 
Puate 5. 
Fig. 
1, 2. PLANORBIS SUBCRENATUS, Carpenter. Lon- 
don Zool. Proc. 220, 1856. 
Binney, 1. c. 103. No. 1, 
3,4. Pi. Hornu, Tryon. Am. Jour. Conch. 
i, 231, t. 22, f. 16, 1865. No. 2, 
5, 6. Pi. rumEens, Carpenter. Mazatlan, Cat. 
181. 
Binney, 1. c. 106. No. 3. 
7, 8,9. Pu. GRacttentus, Gould. Proc. Bost. 
Soc. v, 129, 1855. No, 4, 
(62) 
