190 zoNiTiD^s:. 



when extended. Left dorsal lobe bifid, the posterior portion 

 narrow. Mucous gland with a small rounded overhanging lobe 

 above. Foot long and narrow, the sole divided into median and 

 marginal areas. In the genitalia the male organ is a simple, short, 

 bulbous sheath, the retractor muscle is attached to the side, with- 

 out any caecum, and the vas deferens enters at a short distance 

 from the retractor without distinct kale-sac. Spermatheca of 

 moderate length, subcylindrical ; amatorial organ (dart-sac) 

 wanting. 



In the radula the median tooth has a strong cusp on each side 

 about halfway down ; the inner laterals have an upper inner lateral 

 cusp and an outer lower one ; outer laterals bicuspid, the outer 

 cusp below the inner. Teeth in a row : 45 . 2 . 12 . 1. 12 . 2 . 45 

 (59 . 1 . 59). Jaw with a projection in the middle inside. 



On account of the remarkable mantle-lobes and genitalia, 

 Col. Godwin- Austen made this species the type of a subgenus 

 EurycJilamys, to which probably several South Indian and Ceylouese 

 forms should be referred. The division is fully justified. [At 

 present only this and the next species are known to belong to it. 

 The animals of so many species from S. India remain to be 

 examined.] 



288. Eurychlamys regiilata, Bs. (Helix) A. M. N. H. (3) v, 1860, 

 p. 383 ; Pfr. (Helix) Mon. Hel. iv. p. 125 ; H. S,- T. (Helix) C. I. 

 1876, pi. 31, figs. 5, 6 ; Godwin-Austen (Eurychlamys), Mol. hid. 

 ii, 1899, p. 92, pi. 84, figs. 2 a-g ; Kohelt, in Mart. 8f Chemn. Syst. 

 Conch.-Cah. ed. 2, Naninid^, 1901, p. 1028, figs. 26, 27. 



Shell scarcely perforate, subglobosely depressed, tliin, obliquely 

 obsoletely striated, very neatly ornamented throughout with fine 

 parallel spiral impressed lines, rather further apart above than 

 below, brownish horny, translucent, highly polished : spire 

 depressedly conoidal, apex rather obtuse, suture impressed, but 

 shallow ; whorls 31, slightly convex, rapidly increasing, the last 

 broader, slightly compressed at the periphery, more convex 

 beneath ; aperture large, oblique, roundly lunate ; peristome 

 straight, acute, columellar margin curved, vertical above and 

 rather broadly subtriangularly reflected over the perforation, 

 margins remote. 



Major diam. 10, min. 8^, axis 51 mm. 



Hah. Ceylon, Kaluganga in East Matelle, Ivatukellekande 

 (Layard), and BaduUa (CoUett). 



Animal very similar to that of E. pjatycldamys : foot long beliind 

 the shell, lobe over the mucous gland elongate ; shell-lobes broad, 

 almost or completely covering the shell wlien extended. Penis a 

 simple long sheath without ceecum or other appendage, the vas 

 deferens joining it very near the retractor muscle. TN'o dart-sac. 

 Teeth on radula thus arranged : 55 . 2 . 12 . 1 . 12 . 2 . 55 (69 . 1 . 69). 

 Median tooth tricuspid ; lateral cusps basal, inner laterals bicuspid 



