FLATE LXXXVIIL 



BULLA HYDATIS, 



PINNACE DIPPER, OR BUBBLE SHElt* 

 GENERIC CHARACTER. 



Animal Limax. Shell rather convoluted at one end, sub-ovaL 

 Aperture oblong, # 



SPECIFIC CHARACTER 



AND 



SYNONYMS. 



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



deeply umbilicated. 



Bulla Hydatis: testa rotundata pellucida longitudinaliter substri« 

 ara: vertice umbilicato. Linn. Syst. Nat. p. 1 183 

 No. 311. — Gmel. Linn. Syst. Nat. 3424. sp. 9. 



Nux Marina umbilicata, minutissime per longltudinem striata, sub- 

 rotunda, ore admodum patulo, tenius, fragilis can* 

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

 Chemn.9. t.US.f. 10I9. 



Bulles d'eau blanches, papyracees. Tonnes a bouche entiere. D*Avil& 

 Cab. p. 207. No. 389. 



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

 p. 28. sp. 15. -*Tah, I. Jig. 10. 

 VOL, m. £ 



