120 CALYPTR^A. 



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

 of adhesion is glossy, but does not show anj- 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 j-ellow, 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 laevigata 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, 215. 



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

 maschko ; C. Zasuiyato, Lam. ; C ??iMnca/a, Costa; G.spinulosa, 

 Chemn. ; C. albid a, Donox.; G.succinea, 'Risso; C. PoZw, Scacchi ; 

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

 synonyms. 



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



Reddish brown, aculeately radiatel}^ striated ; internal appen- 

 dage lateral, appressly effused. 



Gulf of Galifornia. 

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



Depressed orbicular, pellucid, finel}- concentrically striated; 

 livid white ; internal appendage rather depressly septum-shaped. 



Fhilippine Islands. 

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



Rather thin, concentrically striated ; yellowish white, radi- 

 ately subtessellatelj^ marked with chestnut, interior bluish white 

 with the markings chestnut-violaceous ; internal appendage 

 diaphanous, thin, effused. 



West Golumhia to Acapulco. 

 C. MAMiLLARTS, Brod. PI. 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). 



