12 PROCEEDINGS OF THK MALACOLOGICAL SOCIETY. 



band follows the angulation of the whorl throughout, with another 

 on and above the suture ; on the under side an exceedingly fine 

 striation may be seen under a high power ( X 60). Colour pale 

 ochraceous, with a greenish tinge. Spire conic, sides nearly flat ; 

 apex blunt. Suture shallow, with a thread-like liration. Whorls 8, 

 narrow, sides very slightly convex below the liration, flat from that 

 to the suture. Aperture semilunate, narrow, vertical. Peristome 

 thin, slightly reflected on the columellar side, which is suboblique. 

 Size: maj. diam. 7, alt. axis 6 mm. 



Hah. — Ambegamua, Ceylon, 3,000 feet (0. CoUett). 



This very interesting species was found among dead leaves in the 

 forest, and to Mr. 0. Collett is due the credit of being the first 

 to collect a form, which enables me to show the occurrence in India 

 of a group of shells not hitherto recorded from any part of that 

 region. Nothing like it has been found to the east of the Bay of 

 Bengal, on the north-east frontier, or in Burma, but the possibility 

 of its being a casual introduction is removed by the discovery of 

 another allied species in the south of the Indian Peninsula by 

 Colonel Beddome. 



It is also possible that Sitala tricarinata, ~W. & H. Blanf., from the 

 Mlgiris, and 8. subhilirata, Gr.-A., from the Little Brother, Andaman 

 Islands, may find a place in the Endodontidae. Helix monotiema, 

 Benson, from Ceylon, is almost certain to belong to this section. 



I have examined two specimens which were preserved in spirit. 



The animal has a distinct peripodial groove and broad pallial margin 

 (Figs. 2ar-b) with a fringe-like structure, very colourless in contrast 

 with the foot above, but it has no mucous pore. The right dorsal 

 lobe (Fig. 2) is large, with a very pale, narrow outer margin, 

 the left rather narrow, its widest portion being in the middle ; 

 both are darker than the foot of the animal, which is pale grey with 

 a paler margin. The sole is not divided. The salivary glands, 

 disposed in two long masses on either side of the oesophagus, are of 

 a dark tint. 



The generative system (Fig. 5) is simple, and devoid of accessory parts; 

 the male organ is sharply bent on itself near the generative aperture, 

 the retractor muscle being given off low down from the second bend. 

 It thence narrows, becoming gradually whip-like, into the long vas 

 deferens, forming a long loop in a backward direction, and returning, 

 as usual,' to pass between the retractor muscles of the eye-tentacles. 

 The male organ, as far as the loop, is solid, pink in colour, and 

 conspicuous on dissection. At the anterior end it terminates in 

 a bluntish knob. The spermatheca is globose, with a thin stalk-like 

 tube, which joins the vagina high up, and, connected with it, passes 

 downwards into the common sheath of the vagina. 



The jaw (Fig. 3) was only seen in the second specimen examined ; it 

 corresponds with that of the family Enclodontidee, and was exceedingly 

 fragile, consisting of a number of thin, oblong plates, overlapping each 

 other. This single jaw was not complete, and I could only get two 

 drawings of separate portions, one being a side view, of eight or nine 

 plates. 



