TASMANIAN LAND SHELLS. 13 



15. — Helix ( ) Langleyana — Brazier. 



Brazier, Pro. Linnean Soc, N.S.W., 1876, p. 18. 



Shell largel}" umbilicated, discoid, thin ; very finely and obliquely 

 sculptured ; not shining, pale horn-brown ; spire depressed ; suture 

 channelled ; whorls 3 J (1), the three upper ones with the sculpture much 

 rougher, the last large and roundly convex ; aperture oblique, lunately- 

 ovate ', peristome simple, acute, margins distant ; columellar margin 

 slightly reflected at the edge of the umbilicus. 



Diameter, greatest 4 J, least 3 J ) height, 2 lines. 



Sahitat. — Macquarie Harbour, "West Coast. 



I regret I have not now a specimen of this shell, but I think it is 

 questionable if it is any more than a variety of H. Hamiltoni or 

 S. Stephensi, both of which vary so much as to render it very doubtful 

 whether they are even distinct in the true sense of the word. I, how- 

 ever, place it in the list for future investigation. 



16. Helix ( ) Fordei — Brazier. 



Pro. Zool. Soc, 1870. 

 Legrand's Col. for Mon., sp. 53. 



H. tahescens — Cox. 



Legrand's Col. for Mon,, sp. 77. 

 H. Petterdi — Cox. 



Legrand's Col. for Mon., sp. 18, pi. i., fig. 2. 



H. Allporti — Legrand. 



H. Austrinus — Cox. 



Legrand's Col. for Hon., sp. 22, pi. 1, fig. 3. 

 II. Medianus — Cox. 



Legrand's Col. for Mon. , sp. 19, pi. 1, fig. 3. 

 H. helice — Cox. 



Legrand's Col. for Mon., sp. 20. 



Shell perforated, convexly depressed, thin ; closely, finely, obliquely, 

 irregularly striated ; horny-brown to horny-green ; whorls 5, convex, 

 rapidly increasing, last the largest ; keeled at the periphery, grooved at 

 the suture ; spire slightly raised, acute ; base convex, moderately 

 smooth j aperture oblique. Innately rounded ; peristome simple, margins 

 distant, the columellar margin dilated and reflected, almost covering the 

 small perforation. 



Diameter, greatest 0*30, least 0"22 ; height, 0*1 6 of an inch. 



Habitat. — Recherche Bay, South Cape, Mount Wellington, Long 

 Bay, Southport, Mount Bischoff (Johnston), Victoria. 



Variety a. — Dark chestnut, obsoletely keeled at periphery ; the H. 

 A llporti — Legrand. 



Variety h. — Light olive-green colour ; the H. austrinus — Cox. 



