

PLATE LXXXVlII, 



BULLA HYDATIS. 



PINNACE DIPPER, OR BVBBLE SHELL,. 

 GENERIC CHARACTER. 



Animal Limax. Shell rather convoluted at one end* sub-oval. 

 Aperture oblong* 



SPECIFIC CHARACTER 



AND 



SYNONYMS. 



Oblong-ovalj fragile, pellucid, finely striated longitudinally, base 



deeply umbilicated. 



Bulla Hydatis: testa rotundata pellucida longitudinaliter substri- 

 ata : vertice umbilicato. Linn. Syst. Nat. p. 1183. 

 No. 377. — Gmel. Linn. Syst. Nat. 3424. sp. 9. 



Nux Marina umbilicata, minutissime per longitudinem striata, sub- 

 rotunda, ore admodum patulo, tenius, fragilis Can- 

 dida. Gualt. 1. Conch, tab. 13. fig. D.D. 

 Chemn. 9. t.ll8.f.ioi9. 



Bulles d'eau blanches, papyracees. Tonnes a. bouche entiere. D'AviU 

 Cab. p. 207. No. 389. 



Bulla Ovalis, fragilis et pellucida. Naviacula. Da Costa Br. Conch. 

 p. 28. sp. 15.— Tab. I. fig. \0. 

 vol. III. E 



