coi-linge: non-operculate land and freshwater molluscs. 8 1 



exactly 3 7 '5 millim. from the anterior border of the kidney. The 

 puhnonary vein is large, as also the efferent and afferent vessels. 

 The specimen figured is one of form B. 

 HELICIDAE. 

 Troehomoppha, Albers. 

 Troehomorpha castra, Bens. 



Helix castra, Benson : Ann. Mag. N.H., 1852, vol. x, p. 349. 

 IVocJiovwrpha ca><ira, Stoliczka : J. As. Soc. Bengal, 1873, vol. 



xlii, p. 21, pi. i, figs. 14-16, pi. ii, figs. 7-9. 

 Hab. — Kwala Aring, State of Kelantan. 

 One specimen. 



Sitala, A. Ad. 

 Sitala eapinifera, stol. 

 /Sitala rarinifera, Stoliczka: J. As. Soc. Bengal, 1873, ^'o^- ^^'^ 



p. 16, pi. i, figs. 8, 8rtH'. 

 Hah. — Gunong Inas, 3,500 ft.. State of Perak. 

 Four specimens. 



Chloritis, Beck. 

 Chloritis malayana, Mlldff. 

 Helir (Trachia) malayana, Mlldff. : J- As. Soc. Bengal, 1886, 



vol. Iv, p. 303. 

 CJi/urit is iita/ai/ana, MWdff. : P.Z.S., 1891, p. 335, pl. xxx, figs. 



6, 6a. 

 Hah. — Foot of Gunong Inas, State of Perak. 



Amphidromus, Albers. 

 Amphidromus perversus, L. 



PI. iv, figs. 24, 25, PI. V, figs. 26-28. 



Hah. — Biserat, State of Jalor. 

 Three examples of the animal of this species, enables me to give some 

 account of the anatomy. 



The shells of the two specimens here described were submitted 

 to Mr. Hugh Fulton, who very kindly confirmed my identification. 

 The Generative Organs (PI. iv, figs. 24, 25, PI. v, fig. 26). — In the 

 first specimen the vagina is of great length, and proximally is held in 

 position by a series of short, strong muscles arising from the floor of 

 body cavity. Internally the condition is not unlike that I have 

 described in A. jialaceuK, Mouss. (6). The free oviduct is very short. 

 The receptacular duct is a long, wide, irregular shaped tube, distally 

 it becomes very narrow and forms a short, fine tube, which terminates 



