nALL, TKR'ilARY MOLLUSKS OF FLORIDA, PART II. 



PLATE XV. 



Fig;. I. Potamides [Pyrazisiuus) scalatus Hp. ; 44.0 mm.; p. 289. 



Fig. 2. Potamides (^Pyrazisinus) campanulatus (Hp.) Dall, adult ; 41.0 mm.; p. 28S. 



Fig. 3. Potamides {Pyrazisinus) cornutus (Hp.) Dall, type-specimen ; b, normal lip ; 

 a, abnormal lip, formed after fracture ; 49.0 mm.; p. 28S. 



Fig. 4. Potamides {Pyrazisinus) scalatus var. ecarinafus Dall, young ; 31.0 mm. ; p. 2S9. 



Fig. 5. Dentaliuifi prisma DaW, And. s^ciion; 16.75 mm.; p. 442. 



Fig. 6. Potamides {Pyrazisinus) campanulatus, base, shovimgcompXei^AVip; 19,5 mm. 



Fig. 7. Potamides [Pyrazisinus) scatatiis, base, showing incomplete lip ; 26.0 mm.; 

 p. 289. 



Fig. 8. The same, with lip still less mature. 



Fig. 9. Cerithium caloosaense Dall, side view of aperture ; p. 279. 



Fig. 10. Potamides [Pyrazisinus) campanulatus, last whorl, showing the sinus in the 

 outer lip. 



Fig. 10 b. Potamides [Pyrazisinus) scalatus, young, with strong ribs ; 38.0 mm.; p. 2S9. 



Fig. II. Cerithium caloosaense Dall ; 75.0 mm. ; s = suture; p. 279. 



Fig. 11 b. Ceritkiu}n caloosaejise var. Heilprini T>a\\ ; 40.0 mm.; p. 279. 



Fig. 12. Cerithium hillsdoroensistip., from gutta-percha cast of the rock-mold, type- 

 specimen ; 31.0 mm.; p. 286. 



Fig. 12 b. Syrnola caloosa'ensis Dall ; 3.4 mm.; p. 252. 



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