DOLIID^. 203 



provided with a float, like lanthina ; the larval shell has a thin, 

 corneous operculum. 



Malea, Valenciennes. 



Syn. — Cadium, H. and A. Adams. 



Distr. — M. ringens, Swains. (Ixii, S5). M. denticulatum, Desh. 

 Pliocene. 



Shell having the form and sculpture of Dolium, but the outer 

 lip is thickened, somewhat reflected, and denticulated, inner lip 

 with calloused plicate prominences. 



Pyrula, Lam. 



Fig-shell. Etyra. — Diminutive of pyrus, a pear. 



Syn. — Ficus, Rousseau. Ficula, Swainson. Otus, Risso. 

 Sycotj^pus (Browne), Adams. Ficopsis, Conrad. 



Distr. — 8 sp. West Indies, Philippines, W. Tropical America. 

 Fossil. Cret. ; India. Cret. and Eocene ; United States. P. 

 decussata, Wood (Ixii, 3*r). P. ficus, Linn. (Ixii, 40). 



Shell thin, pear-shaped, terminating anteriorly in a moderate 

 canal ; lip thin, smooth ; surface cancellated or with revolving 

 ribs. 



Animal with subulate tentacles and eyes at their outer bases ; 

 mantle produced on each side, covering the shell ; siphon straight, 

 elongated; foot simple, thin, produced posteriorly. No oper- 

 culum. 



The Pyrulse crawl very rapidly, bearing their light, elegantly- 

 formed shells easily, and, with their neck stretched out, their 

 siphon exserted, and their foot greatly expanded, present remark- 

 able objects of contemplation to the malacozoologist. They 

 are generally delicately flesh-tinted, with faint, marbled, crimson 

 and pink markings ; their eyes are large and black, and their 

 long flat heads and necks usually white. 



PTYCHOSYCA, Gabb. Shell shaped like Pyrula ; inner lip with 

 one anterior very oblique fold. P. inornata, Gabb (Ixii, 39). 

 Cretaceous ; Georgia. 



FicuLOPSis, Stoliczka. Pyriform, attenuated in front, inflated 

 behind ; spire very short ; surface spirally and transversely 

 striate or costulate ; columella thick, angulated, plicate. P. 

 Pondicherriensis, Forbes (Ixii, 38). Cretaceous ; So. India. 



{Macgillivrayidse ?) 

 The two following genera are probably larval prosobranchiate 

 mollusks. 



Ethella, H. and A. Adams. 



Distr. — E. Macdonaldi, Ad. (Ixxxvii, 10, 11). Australia. 

 Ciliated arms six in number ; creeping disk rudimentary ; 



