120 CALYPTR^EA. 



crusted by nmllipore, and had the same appearance. The mark 

 of adhesion is glossy, but does not show any excavation. Ac- 

 cording to Andouin and Milne-Edwards the female hatches her 

 eggs, and keeps the fry between her foot and the foreign body 

 to which she adheres ; her patelloid shell thus serves not only to 

 cover and protect herself, but is also a shield for her offspring. 

 The eggs are yellow, and inclosed in membranous capsules, which 

 are flattened, transparent, and filled with an albuminous matter. 

 These little sacs are from six to ten in number, connected one 

 with another by a pedicle, and arranged like the petals of a rose ; 

 each capsule contains ten to twelve eggs. The fry resembles 

 that of Velutina Isevigata in shape and sculpture ; and the ani- 

 mal at this stage of growth has large ciliated neck-lobes, as in 

 other Gastropoda." Brit. Conch., iii, 275. 



It is C. vulgaris, Phil. ; C. squama, Desh. ; G. mamma, Sie- 

 maschko ; C. laevigata, Lam. ; G. muricata, Costa; C.spinulosa, 

 Chemn.; C. albida, Donov. ; C. succinea, Risso; C. Polii, Scacchi ; 

 C. spirata, Nardo ; G. carinaria, Bon., besides a number of fossil 

 synon3 r ms. 



C. SUBREFLEXA, Carpenter. PI. 34, figs. 58, 59. 



Reddish brown, aculeately radiately striated ; internal appen- 

 dage lateral, appressly effused. 



Gulf of California. 

 C. PELLUCIDA, Reeve. PI. 34, figs. 60, 61. 



Depressed orbicular, pellucid, finely concentrically striated; 

 livid white ; internal appendage rather depressly septum-shaped. 



Philippine Islands. 

 C. CONICA, Brod. PL 34, figs. 62, 63. 



Rather thin, concentrically striated ; yellowish white, radi- 

 ately subtessellatety marked with chestnut, interior bluish white 

 with the markings chestnut-violaceous ; internal appendage 

 diaphanous, thin, effused. 



West Columbia to Acapulco. 

 C. MAMILLARIS, Brod. PL 34, figs. 64-75, 78-81. 



Rather thin, smooth, with growth-lines ; whitish, becoming 

 purplish or brownish purple on the spire, the mamillary apex 

 brownish ; interior light brownish or violaceous. 



Valparaiso, Panama, Mazatlan, Sta. Barbara, Gal. 



'Payta to Guayaquil (d'Orbigny). 



