MOLLTJSCA OF INDIA. 183 



the second specimen dissected the form of the foot was perfect, and 

 confirms my field-note in the most satisfactory way ; because there 

 was just a doubt I had been deceived about the mucous gland, 

 which my friend Dr. Blauford had suggested, for it is not always 

 in life so very well seen when covered with mucous and the animal 

 swollen in wet weather. 



In a paper I wrote on the Helicidae (Zonitidfe) collected during 

 the expedition into the Dafla Hills, Assam (Journ. Asiat. Soc. 

 Bengal, vol. xlv. pt. 2, p. 311, 1876), occurs the first notice of 

 this species : — 



" Helix lubkica, Bs. ? (Plate viii. fig. 9.) 



" Until I had examined the animal I should have supposed it to 

 possess the usual truncate glandular form at the extremity of the 

 foot. It shows how carefully we should examine the living animals 

 before grouping these very similar forms of Helicidae, and how mueh 

 has to be done in this direction. I give a description and drawing 

 of this species. 



" Animal. Fore part of foot and head, as well as the tentacles, 

 dark slate ; extremity of foot pointed (no gland visible), pale grey, 

 edged light fleshy ; sole of foot dark orange ; mantle very slightly 

 reflected in front, with no tongue-shaped process, — it is in fact very 

 similar to that of Vitrina. 



" Length 2-()" ; tentacles 0-5" ; shell, major diam. 0-95". 



" Habitat. Shengorh Peak, 7000 ft." 



The only part of this original description which was wrong relates 

 to the tongue-shaped process or shell-lobes : these were seen to be 

 present in the second specimen soaked out ; they are small, particu- 

 larly the right, and might easily be overlooked in life. The animal 

 had clearly a pointed foot, not divided below as in Macrochlamys, 

 with an indistinct central fold, no peripodial grooves, very dark 

 grey, a rather smooth surface with a pale narrow peripodial border. 



From the two soaked-out specimens I have been able to make out 

 much more of the genitalia than the first alone presented, which 

 was incomplete. 



The generative organs are most interesting and fall in with the 

 dissimilarity to Zonitoid genera, such as Macrochlamys^ presented in 

 the external characters. They are altogether dift'erent from any 

 species of Indian Land Mollusca I have hitherto seen, particularly 

 in the form of the dart-sac. The penis is a simple tube bent on 

 itself near the short retractor muscle. The spermatheca is long 

 and ample. The oviduct in both cases was destroyed, but in 

 the second specimen the junction of the vas deferens was intact. 

 The dart-sac is short, rounded at the distal end, and on being opened 

 out a blunt leathery solid dart was disclosed. Attached to the head 

 of the dart-sac at its central point is a tube of great length : in the 

 first specimen this is thin at first, then swelling out much larger in 

 several coils, and again becoming thinner ; in the second specimen 

 this rope-like tube is more uniform in size, muih coiled together 



