14 ENDODONTIDJS. 



spirally striate only ; sutures deeply impressed ; umbilicus very 

 oarrow ; peristome simple ; aperture narrow sublunate. 



' ; Diam. maj. 1'5 mm. ; alt. 1*75 mm/' 



Hab. Ceylon : Uda Pussellawa. 



Mr. Preston compares this species with T. liispida, Sykes, from 

 which it differs by its much smaller size and more graceful form, 

 while the spiral and arcuate transverse striae, which characterize 

 his shell, are lacking in the latter. 



Genus GLYPTAULAX *, g. n. 



Shell discoid, umbilicated, with close revolving lirae and sulca- 

 tions, decussated by oblique costulae. Anatomy unknown. 

 TYPE, Helix arttficiosa, Benson. 

 Range. Burma. 



23 a. Glyptaulax artificiosa, Benson. 



Helix artificiosa, Benson, A. M N. H. ser. 2, xviii, 1856, p. 249 : 

 Pfeifter, Novit. Conch, ser. 1, i, 1860, p. 131, pi. 36, figs. 8-10 ; 

 Hanley & Theobald, Conch. Ind. 1870, pi. 55, fig. 3. 



Helix (Patula (Punctum)) artificiosa, Tryon, Man. Conch, ser. 2, 

 iii, 1887, p. 33, pi. 7, fig. 82. 



Nanina artijiciosa, Nevill, Hand List, i, 1878, p. 54. 



Original description: "Testa anguste umbilicata, orbiculata, 

 discoidea, nitidiuscula, superne liris confertis sulcisque profundis 

 spiralibus, costulisque confertis obliquis decussata, subtus liris 

 remotioribus striisque radiatis ornata, pallide cornea ; spira planu- 

 lata (interdum omnino planata), apice vix elevato, obtuso ; sutuni 

 profunda; anfractibus 6^ convexiusculi, lente accrescentes, ultimus 

 superne subangulatus, subtus convexus ; apertura vix obliqua, 

 subanguste lunaris ; peristomate acuto. leviter sinuato, margine 

 dextro arcuato, crenulato, columellari brevissimo et basali sub- 

 stricto leviter reflexis. 



"Diam. rnaj. 14, inin. 12, alt. 5 mill/' 



Hob. Burma : Tenasserim (Theobald). 



The species is unlike any other known to us and its systematic 

 position is doubtful. The anatomy is unknown. It is placed 

 provisionally in the subfamily Thysanotinse between Thysanota 

 and PJiilalanlca. 



Genus PHILALANKA, Godiuin-Austen. 



Philalanka, Godwin-Austen, Proc. Malac. Soc. London, iii, 1898, 

 p. 11 (as subgenus of Endodonta) ; ibid., Moll. India, ii, 1907, 

 p. 190. 



Original description : " Shell small, many-whorled, pyramidal 

 or trochiform with a single liration, unicoloured. Jaw composed 

 of numerous squarish plates. Basal plates of teeth of the radula 



curved, and av\a$ furrow. 



