No. 50.] 33 



Carocoljla , 



Pupa mumia, 5 sp. The Double-toothed Pupa. 

 BuLiMus H-EMASTOMiTs. The Rose-Upped Bulimus. 



BuLiMUs , 3 sp. 



AcHATiNA ZEBRA, 2 sp. The Zebra Achatina. 

 AcHATiNA VIRGINIA. The Virginian Achatina. 

 Auricula jud^a. Jiidas's Ear. 



FAMILY NERITACEA. 



Neritina zebra. The Zebra or Striped Neritina. 



Neritina , 2 sp. 



Neritina . 



Neritina , 4 sp. 



Neritina , 9 sp. 



Neritina . 



Neritina , 6 sp- 



Nerita peloronta. The Bleeding-tooth Nerita. 



Nerita , 5 sp. 



Nerita , 2 sp- 



Natica mammilla, 5 sp. The Nipple Natica. 

 Natica zebra, 5 sp. The Zebra Natica. 



Natica , 2 sp. 



Natica duplicata, 2 sp. 



Natica , 2 sp. 



Natica heros, 2 sp. 



Natica , 2 sp- 



Natica . 



Janthina communis, 6 sp. The Common Janthina. 



FAMILY MAOROSTOMIDES. 



SiGARETUs haliotoideus. The Haliotis-shaped Sigarttus. 

 Haliotis canaliculata, 4 sp. The Ear-shell. 



I Senate No. 50.] 3 



