TASMANIAN LAND SHELLS. 49 



"Variety — Queenhoroughensis. 



Shell ovate, thin, pellucid, very shining, ventricose, rich homy- 

 brown, with the apex tinged reddish ; spire small ; whorls 3J, rounded, 

 last whorl much inflated ; aperture ovate. 



Length 11 J, breadth 8 ; aperture, long 7, broad 5 mil. 



Habitat. — Queenborough (C. E. Beddome). 



Possibly a distinct species. A specimen from Ringarooma exactly 

 corresponds in size and form, but is of a greenish-horn colour, with the 

 apex tinged pink. Closely allied to the Australian S. arhorea. 



Variety — Tamarensis. 



Shell ovately acuminate, very thin, shining, yellow-horn, apex 

 tinged darker shade, when living thickly encrusted with mud, longitu- 

 dinally striate ; spire attenuate, acute ; whorls 3 J, flatly convex, last 

 oblique ; aperture oval ; peristome simple, acute, very thin. 



Length 13, breadth 7 J; aperture, long 8, broad 5 mil. 



Habitat. — Tea-tree swamp, bank of Tamar river, near Launceston. 



This also is probably a distinct species, but I hesitate ranking it as 

 'iuch until further observation. Collected on the mud and about the 

 roots of the Tea-tree. Allied to the European S. Pfeifferi, 



Genus— VITRIN A— r^rai?er»awc?. ; 



Shell imperforate, very thin, pellucid, hyaline, depressed ; spire 

 short ; whorls 2 to 3, rapidly enlarging ; ajjerture large, lunate or 

 rounded ; columellar margin slightly inflected ; peristome thin, often 

 membranous. 



Animal elongated, too large for complete retraction into the shell ; 

 mantle produced, transversely rugose, covering the front edge of the last 

 whorl and part of the spire of the shell, and furnished with a posterior 

 lobe on the right side. Mandibles arcuate, rostrate ; lingual teeth (of 

 type Vitrina Drapernandi ), 100 rows of 75 each ; marginal teeth with a 

 single, long, re-curved apex. — Thomson. 



The Australian and Tasmanian belong to the division IIelicarion» 

 About seventeen Australian species recorded. ^ 



1. — Vitrina ( ) Verreauxi — Pfr. 



Pro. Zool. Soc, 1849, p. 132, 



Reeve, Cone, Icon., sp. 21. 



Cox, Mon., 1868, p. 83, pi. xiv., fig. 14, 14a. 



Legrand, Col. for Mon., sp. 2. 



Shell depressly-auriform, thin, diaphanous, slightly shining, smooth 



(pale greenish-yellow to deep orange), frequently rugosely striated at the 



