GENUS AMPULLARIA, Lamarck. 



PLATE 1. 



Testa globosa, ventricosa, labio non calloso; apertura 

 Integra,' marginibus connexis; labro acuto, non reflexo; 

 operculum corneum. 



SYNONYMS AND REFERENCES. 



HELIX, LIN. 



NERITA, MULLER. 



BULIMUS, BRUG. 



flMPULLARiA, LAM. An. sans vert., vol. viii. p. 527. 



GUILDING. Zool. Journ., iii. 538, pi. supp. 27, figs. 7, 8. 







DESCRIPTION. 



ANIMAL globular, spiral; head bisected ante- 

 riorly, each half lengthened into a short taper- 

 ing labial palpus, having the sense of touch 

 highly developed: "mouth terminal, circular, 

 expanding and contracting in every direction 

 like the opening of a purse; within, furnished 

 with two semicircular jaws moving laterally, 



6 1 



