AB... Cephalcephora; Gasteropoda. 
Dolabella, Lam. 
Rumphii, Cuv. (D. callosa, Lam. Syst.) 
Bursatella, Blainv. 
Notarchus , Cuv. 
Fam. 3. 4cera. (Acéres, Cuv.) 
Lobaria, Müll. (Akera, Cuv.; Doridium, Mckl. ; 
Bullidium, Mckl.) 
Gasteropteron, Mckl. (Gasteroptera, Blainy,; Par- 
thenopia, Ok.; Sarcoptera, Raf.?) 
Atlas, Les. 
Sormetus, Fér. 
Bullaea, Lam, 
aperta, Lam. (Bulla aperta, L.) 
Bulla, L.; Lam.; Fér. 
A. Spira involuta. (Atys, Montf.; Naucum, Schum.) 
naucum, L. (Atys cymbulus, Montf.) 
obovata, m. 
solida, Br. (B. cylindrica, Chemn.) 
hydatis, L. 
utriculus, Brocch. 
cornea, Lam. 
B. Spira | retuso - umbilicata, (Bulla,  Schum.; Bullus, 
Montf.; Rhizorus, Montf. ) 
ampulla, L.; Br. (Bullus ampulla, Montf.) 
striata, Br. (8. ampulla, £, Gm.) 
C. Spira manifesta, depressa v, convexa. (Mydatina, 
Schum, ) , — 
physis,.L. — 
velum, Gm. (B. fasciata, Br.). . 
ieverensis, Schroet. (B. truncata, Adams.) 
