68 pulmonata. 



3. Helicarion nigra. 



Shell oval, nearly plane, rufons ; aperture ellijitical, arajjle, left 

 margin slightly inflected ; whorls four, the last very large. Lat. 6, 

 alt. 2i lin. 



Animal black, large, neck elongate, contractile into the shell. — 

 Quay. 



Vitrina nigra, Quotj S)- Gaim. Astrol. ii. 135. t. 11. f. 8, 9. 



Lam. ed Desk. vii. 730. n. 5. 



Pfr. Mon. Helic. ii. 50.9. 

 Hab. Port Western, Australia. 



Australasian : animal not known. Perhaps Vitrinae. 



4. Helicarion Strangei. 



Shell depressed, very thin, smooth, shining, brownish or green- 

 ish horn- coloured; s])ire small, scarcely convex, with a minute, 

 lateral apex ; suture impressed, slightly bordered ; whorls three, 

 scarcely convex, enlarging rapidly, the last depressed above, 

 rounded at the periphery, more convex beneath ; aperture oblique, 

 large, lunate, nearly circular ; peristome simple, rather blunt ; 

 Viith the margins approaching each other ; right margin dilated 

 forwards, columellar margin receding, strongly arched, with a 

 verv narrow membranaceous edge. Height 5, greatest breadth 

 10," least breadth 7h mill, (Pfr.) 



Vitrina Strangei, Pfr. in Proc. Z. S. 1849, 132; Mon. Suppl. 5 ; 



Ic. t. 2. f. 9-12. 

 Hab. Brisbane, East coast of Australia (Strange). 



This shell resembles much the figm'e of V. nigra, Quoy, but 

 it may be easily distinguished by the number of its whorls and 

 by the receding columellar margin. 



5. Helicarion Milligani. 



Shell depressed ovate, rather solid, polished, very shining, of 

 an olivaceous blackish colour ; spire convex ; whorls three, en- 

 larging ra])idly, the penultimate one convex, the last depressedly 

 rounded, rather broad beneath ; apert(u-e very oblique. Innately 

 ovate, of the same colour within ; i^eristome simple, a little in- 

 flected ; right margin dilated forwards, coliunellar margin slightly 

 arched. Height lOg, greatest breadth 22^, least breadth 16 

 mill. (Pfr.) 



Vitrina MiUigaui, Pfr. in Proc.Z.S. 1851, p. ; Mon. Suppl. p. 4. 

 Hab. A small island in Macquarie Harbour, Van Diemen's 



Land (MiUigan). 



