FAMILLE DES CALYPTRÆIDÆ 
Genre Calyptræa Lamarck. 
[Syn. : Calyptraea Humph., Calyptrus Mft., Calyptria 
Owen, Mitrularia Schmch., Lithedaphus Owen, 
Litholepas Owen]. 
Calyptræa equestris Linné, la Réunion. 
[Syn. : C. cancellata Ad. et Rv., C. Dillwyni Gray, 
C. longirostris Owen, C. pileopsis Quoy, C. radiosa 
Gld., C. Roissyi Duf.]. 
Genre Grucibulum Schmch. 
[Syn. : Biconia Sow., Calypeopsis Brod.]. 
SECTIONS 
(1) Crucibulum Schmch. (2) Dispotæa Say. 
Syn. Calypeopsis Less. 
(1) Crucibulum scutellatum Gray, Amérique. ■ 
[Syn. : Crucibulum gemmaceum Val., Cr. pectinatum 
Crptr., Cr. planatum Môrch, Cr. rude Brod., Cr. 
rugosum Less., Calyptraea umbrella Desh.]. 
Genre Trochita Schmch. 
[Syn. : Luna Klein, infundibulum d’Orb., Trocha- 
tella Less., Trochulina Gray.]. 
SECTIONS 
(1) Trochita Schmch. (2) Haliotidea Sowerby. 
(1) Trochita radians Deshayes, Pérou. 
[Syn. : Tr. ventricosa Crptr.]. 
(2) Trochita sinensis Linné, Piriac (France). 
[Syn. : Tr. carinaria Bon., Tr. chinensis Linné, Tr. 
Sismaschko Lmck., Tr. spinulosa Chemnitz, 
Tr. squama Desh.]. 
Genre Crepidula 
[Syn. : Crypta Humph., Crepidulus Mft., Sandalium 
Schmch., Prozenula Perry]. 
SECTIONS 
(4) Ergea H. A. Ad. 
Syn. Siphopatella Less. 
(1) Crypta Humph. 
(2) Crepipatella Less, 
(3) Janacus Môrch. 
