2 H. H. Godwin.- Austen — Descriptions of New [No. 1, 



Helix (Nanina) atricolor, n. sp., Plate I, Fig. 2. 



Shell imperforate, depressedly conoid, very strong, colour varying from 

 rich bright brown to greenish ochre, pure brown or ochre near aperture, with 

 a glassy surface finely striated ; spire flatly conoid, whorls 6£, periphery 

 rounded, fiat at base ; aperture sub-oblique, broadly lunate, peristome 

 well thickened and slightly reflected near the columella. 



Major diam. 0'93, minor 085, alt. 0*45 in. 



Animal quite black throughout, tentacles long with the extremities 

 paler, extremity of foot short and glandular, as in JVanina decussata, Bs. 



Sab. — On the higher parts of the North Cachar Hills, never seen to the 

 westward of that portion of the range, and tolerably abundant in certain 

 spots. The colour of the animal is its most distinctive character, shells of 

 this group of Helices being very similar, and the characters of the animals 

 of great importance ; I may mention as an instance JST. petrosa, Hutton, 

 found in damp ravines on limestone at Mussoorie, which has been con- 

 founded with other species and the animal of which is almost black ; by this 

 character it is identified at once and is rendered a very good species. 



Helix (Nanista) Shisha, n. sp., Plate I, Fig. 3. 



Shell depressedly turbinate, imperforate, exceedingly thin, brittle, 

 transparent, pale greenish horny, sharply keeled ; whorls 5, ornamented 

 above with fine and even ribbing, quite smooth at base ; aperture oblique, 

 semicircular, lip thin. 



Major diam. 0'6, minor 0*51, alt. 0*3 in. 



Sab. — Two specimens were found., the one at Moyong, north side of 

 the Khasi Hills, and the other at Nenglo, Naga Hills, in damp forest, but 

 such a fragile form would be probably abundant during the rainy season, 

 and like so many others only then to be seen. 



Animal not seen, but in all probability is naninoid. In the plication of the 

 upper surface it is like N. plicatula, W. Blf. (J. A. S. B., 1870, Vol. XXIX.) 

 a species the animal of which had not been observed at the time when the 

 shell was described. I now give a short description of it :— pale brown, 

 mottled very evenly with umber over the head and sides, a distinct line 

 of darker colour down the centre of back ; tentacles rather thick at base, 

 moderately long gland at extremity of foot, which is rather truncate ; 

 length 1*25 inch. 



Glessula orthoceras, n. sp., Plate I, Fig. 4. 



Shell very slender and elongate, pale grey or white, very finely and 

 regularly ribbed throughout, very solid, apex blunt; whorls 13 to 14, 

 slightly rounded, suture well impressed ; aperture oblique, rounded below, 

 outer lip sharply edged and continued as a well developed callus upon the 

 strong thickened columellar margin. 



Length 2'32, major diam. - 4 in. 



