19 1 4- J ^ H. H. God WIN- Austen : Mollusca, II. 361 



bulbous at the base and very close together. When the shell is re- 

 moved from the animal, it is noteworthy that the apical coil of the 

 visceral sac is present (pi, xxiii, fig. 4), a mere remnant certainly, 

 3'et a character showing a link with some more snail-like ancestor. 

 The same minute coil occurs also in A. resplendens, vide my descrip- 

 tion and fig. 2/, Moll. Ind., vol. ii, p. 287. In this respect, both 

 species differ considerably from A . gigas of the Khasi Hills, a 

 species which has lost it altogether and may be considered a more 

 recent evolution. 



Generative organs. — The packing of the dift'erent parts, in other 

 words their juxtaposition within the animal is of interest (pi. xxiv, 

 figs. I and 2) — they rest directly on the sole of the foot, with the 

 long large dull yellow coloured albumen gland at the posterior end 

 of the body cavit3^ The oviduct conspicuously and much coiled 

 occupying the anterior and resting against the ample intestine 

 (pi. xxiv, figs 1-2). When turned and viewed from the right side, 

 the penis is seen to have a position on the right anterior upper side, 

 the amatorial organ below it, lying parallel and close to the 

 spermatheca. Separated out and removed from the other parts the 

 genitalia were beautifully seen. The penis has a long flagellum 

 where the vas deferens joins it. thence a very long and somewhat 

 twisted tube extends to the generative aperture. The retractor 

 muscle attached where the tube is bent on itself. 



The amatorial organ is very long and cylindrical, of much the 

 same thickness throughout. The spermatheca is long and large, 

 tapering to the free end : it was as full of spermatophores as it 

 could hold, some 4 or 5, and so pressed together I had very great 

 difficulty in getting one out, and then it was not perfect. It was 

 quite typical of those seen in other species of the genus — other 

 parts alluded to above do not require any detailed description. 

 Characters are very much what is to be seen in A. r.espiendens 

 (Moll. Ind., vol. ii, pi cxxx, 2b-2e), the flagellum is much longer 

 and the amatorial organ more attenuate, not so large and thick. 



The central tooth and admedian teeth are long and narrow 

 with inner and outer cusps, they gradually become narrower 

 and gradually change with about 6 transitional into bicuspid 

 elongate curved teeth. No sharply defined line between the two, 

 the outer marginals are very small. Formula 68 6. 27 i. 27. 6. 68 

 or loi-i loi. This radula differs from A. gigas and resplendens 

 in having a greater number in the row, and not quite the same in 

 their shape. 



The jaw is very concave on the cutting edge, with a central 

 projection, rather narrow and well arched above 



Shell elongatel}^ spatulate ; slighth' concave on the \ipper mar- 

 gin of the peristome. Sculpture none. Smooth, lines of growth 

 showing the form in the early stages of growth. 



Colour strong ochraceous, apex white, inside dull milky white. 

 Suture very short, deep. Whorls one, rapidly increasing. 



Aperture elongately oval. 



Peristome : Edge of peristome thin and membranaceous. 



