192 ZOKETID^E. 



289. Austenia gigas, Bs. (Vitrina) J. A. S. B. v, 1836, p. 350 ; ? Pfr. 

 (Vitrina) Mon. Hel ii, 1848, p. 496 ; Blf. (Vitrina) J. A. S. B. 

 xxxiv, 2, 1865, p. 95 ; Godivin- Austen (Helicarion), J. A. S. B. 

 1875, p. 6, pi. 3 (animal extended) ; H. fy T. (Vitrina) C. I. 1876, 

 p. 29, pi. 66, tigs. 2,3; Nevill, Helicarion (Austenia), Hand-L 

 i, 3878, p. 16; Godwin-Austen, P. Z. S. 1880, p. 294, pis. 24, 25, 

 26, 27 ; id. Mol. Ind. i, 1883, p. 148, 1888, p. 228, pi. 55, figs. 3-4 b 

 (shell and animal), pi. 60, figs. 1, 1 a (animal extended), pi. 62,. 

 fig. 8 (radula) ; vol. ii, 1899, pis. 89, 90 (genitalia). 



Shell thin, polished, subovately depressed, faintly striated, oliva- 

 ceous horny; spire small, flat, projecting beyond the peristome, 



Fig. 66. Austenia gigas, Bs. 



suture impressed; whorls about 2, very rapidly increasing, the 

 last depressed above, occupying the greater part of the shell; 

 aperture very large and oblique, ovate, the margins nearly meeting, 

 the columellar strongly arcuate. 



Major diam. 30, min. 17, alt. 10 mm. A large specimen 

 measures 40 x 25 x 12 mm. 



Hal. Khasi Hills, common about Teria Ghat. Allied species in 

 Arakan Eange, west of Prome, and Kyouk Phyu and Bamri 

 Island. 



