194 ZONITID^E. 



only a blunt outer cusp, afterwards an inner cusp becomes visible. 

 The outer laterals bicuspid, with a long point and an additional 

 cusp low down on the outer side ; the extreme marginals are 

 simple unicuspid teeth. 



The general colour of the animal as represented in the figures 

 is an umber-brown, the furrows on the upper surface being 

 darker. 



290. Austenia butleri, Godwin-Austen (Girasia), Mol Ind. i, 1888, 



p. 226, pi. 60, fig. 7 ; id. op. cit. ii, 1899, p. 108, pi. 90, figs. 5-10. 

 Helicarion gigas, s., small var., J.A.S.B. xliv, 1875, p. 6, pi. 3 



(smaller figure, animal extended). 

 Austenia gigas, var. minor, Godwin-Austen, P. Z. S. 1880, p. 294, 



pi. 24, figs. 3-6, 9, pi. 25, figs. 1-5, pi. 26, figs. 1, 5, 8, pi. 27, 



figs. 8-10 (animal, shell, and anatomy). 



This differs from A. gigas in smaller size and in the different 

 colour of the animal, which is " dark ochre-brown, with very dark 



Fig. 68. Austenia butleri. 



marking, particularly noticeable along the margin of the foot." 

 The neck-lobe of the mantle is represented as spotted in the 

 figure and a broad dark line in front of it, down each side of 

 the neck. Animal represented as about 3| inches long when 

 extended. 



Major diam. of shell 21*5, min. 18 mm. 



Hob. Between Samuguting and Kohima, Naga Hills (Godwin- 

 Austen}. 



Teeth in the radula 32 . 3 . 18 . 1 . 18 . 3 . 32 (53 . 1 . 53), or 

 considerably fewer than in A. gigas. 



*291. Austenia resplendens, Nevill (Helicarion), J. A. S. B. xlvi, 2, 

 1877, p. 23 ; id. Yunnan Exped., Mol. p. 883, pi. 80, figs. 6, 6 a ; 

 id. J. A. S. B. 1, 1881, 2, p. 129, pi. 5, fig. 24 ; Nevill, Helicarion 

 (Austenia), Hand-L i, 1878, p. 16 ; G. Tapp. Canefri, Ann. Mus. 

 Civ. Gen. xxvii, 1889, p. 315. 



This is described as resembling A. gigas, but as being a little 

 thinner and more membranaceous ; it is at once distinguished from 

 it by its flatter, more ear-like, and appressed shape. 



Major diam. 22, min. 14, depth 8 mm. 



Hab. Sawady and Bhamo, Upper Burma (Dr. John Anderson). 



Judging by the figure, this shell appears to have about half a 

 revolution more than A. gigas. 



