tQ Lt.- Colonel H. H. Godwin-Austen on the 



" This interesting form, discovered in the mountains near 

 tlie Bari Do-ab by J. Dojle Smithe, Esq., F.G.S., of 

 Mauhopore, and kindly communicated to me by his brother, 

 the Kev. Fred. Smithe, of Churchdown, approaches more 

 nearly to the Nilgherry II. Giieri'm, Pfr., than to any Hima- 

 layan species. It is notable for its shorter vaulted spire, sharp 

 keel, rather open umbilicus, and sculpture. In one imperfect 

 specimen, with a higher and more rounded hive-shaped spire, 

 the keel of the penultimate whorl overhangs the anterior part 

 of the last whorl." 



We now know that H. Guerini, Pfr., is a Thysanota in a 

 very distinct family of Land-Mollusca. The overhanging of 

 the keel of the whorl I note in these shells, and it produces 

 the appearance of a thread running with the suture. Theobald 

 records the finding of a large variety of this species at 

 " Aijas" ("Ajjas" on the map of Kashmir, 2 m. = l inch), 

 in the hills east of the "Walar Lake, Kashmir, measuring 

 ITjX 16| X 10 mm. This shell appears to have been lost. 



The specimen Benson described measured : diam. major 

 14 mm., minor 13, axis 7 ; the one I now figure : 12 x 11'5 x 

 5^ respectively. 



On removing the shell the visceral sac is pale-coloured, 

 sparsely and iinely spotted with black on the line of the 

 rectum. The foot is short and very narrow, indistinctly 

 divided, dark grey ; a distinct mucous gland overhung by a 

 blunt lobe, peripodial grooves, and a well-marked fringed 

 margin to the foot. There is a small but distinct and serrated 

 right shell-lobe, which would spread further in life ; the left 

 is a marginal band on the edge of the peristome. The genera- 

 tive organs were of great interest as they were unfolded. 

 The amatorial organ is of the usual form ; the penis retractor 

 n-uscle given cff from a distinctly coiled caecum at the head 

 cf the njain penis-^heatli. There is a long epijthallus thence 

 to the junction of the vas deferens, with a long kale-sac 

 adjacent in ^\hich a spermatophore had been developing. 

 The spein.atheca is very long, gradually enlarging to tlie 

 distal end, and contained three spermatopliores; these are of 

 the type I have desciibeci in various species of Macrochlamys, 

 Au.steiiio, &.C. Ihe flume had no large spines, but very 

 minute ones could be detected on the edges of it. This being 

 a single specimen, w^iich I have mounted in glycerine-jelly, 

 I did not like to destroy the sac of the spermatheca to get a 

 sperm atophore out entire. In separating out the lengthened 

 genitalia of a close-wound shell sucli as this is, it is not easy 

 to do so without occasionally something breaking away. The 

 oviduct is peculiar, yery straight up to the albumen-gland, 



