IIOLLUSCA OF INDIA. 165 



impressed. Whorls 5, not fully grown ; aperture widely lunate, 

 subvertical ; peristome very thin ; columellar margin subvertical, 

 with slight reflection. 



Size : maj. diam. 9-0, alt. axis 3g mm. 



The coil of the spire differs from that of M. sathilaensis. 



Animal. Pale-coloured throughout, with black head and the 

 extremity of the foot tinged very slightly darker towards the tip of 

 the overhanging lobe. Both the shell-lobes are very long, particu- 

 larly the right, longer than in any spirit-specimen 1 have ever 

 handled. The right dorsal lobe is small, the left in two parts. The 

 lobe over the mucous gland is not very pointed. The visceral sac 

 is umber-brown, sparsely mottled in front with black, and a long 

 black streak next the renal organ. 



Generative organs. The coiled caecum is exactly like that of the 

 typical species. The kale-sac is long. The spermatheca long. The 

 radula is like allied species in every way (only the central tooth 

 and admedians seen) : — 



-f- . 2 . 10 . 1 . 10 . 2 . 4- 



Ma.crochla.mys bxul, Theobald, (Plate CXI. figs. 2-2 d.) 



Macrochlamifs exul, Land & Freshw. Moll. Ind. pt. iv. p. 103, 

 pi. xxii. fig. 3 (shell) ; Pfr. Mon. Hel. vii. p. 108. 



Locality. Mount Harriet, South Andaman Island (A. Meyer). 



The shell of this species was described and figured, Vol. I. p. 103, 

 Plate XXII. fig. 3. 



The animal had not then been seen, and considerable doubt 

 existed as to its position in the genus Macrochlamys. Thanks 

 to Dr. A. Meyer, who generously sent me a number of land-shells 

 preserved in spirit, collected on his Eastern tour, I am now able to 

 show that it does fall into that genus. A certain amount of 

 variation is shown in minor details of the generative organs, which 

 on comparison with the figures of Bengal species is shown better 

 than by description ; while allowance must always be made for the 

 period of life and the active or passive state of these organs when 

 the specimen is taken. 



Animal. Ochraceous in spirit. Foot divided on the sole, ex- 

 tremity rounded ; mucous gland large, with a blunt overhanging 

 lobe. Right and left shell- lobes (figs. 2, 2 a) are present, the 

 latter apparently larger than usual in the genus. In the 

 generative organs (fig. 2 6) the penis has a coiled caecum; a loJig 

 retractor muscle given off from it. The epiphallus thence to 

 the junction of the vas deferens is very long, and at the junction 

 gives off a long kalk-sac. The amatorial organ is long. The 

 spermatheca consists of an oval sac at the end of a thickened 

 stem. 



Jaw (fig. 2 c) moderately curved, with a slight median pro- 

 jection. 



