290 THE PROCEEDINGS OF THE LINNEAN SOCIETY 



PAPERS READ. 



Descriptions of three new species of Helix, from South Australia. 

 By Professor Ralph Tate, University of Adelaide. 



Helix induta. 



Shell umbilicated, somewhat conoidly depressed, rather thin, 

 covered with a dull brown epidermis, raised into reticulate or 

 scaly lamellae, beneath which the test is coarsely and irregularly 

 striated and distantly granulated ; under surface, moderately 

 glossy, pellucid and striated ; spire slightly elevated, widely 

 conical, obtuse ; whorls 5, flattened, slightly imbricated and 

 margined at the suture ; last whorl rounded, rather depressed 

 above, and angulated at the periphery ; aperture rotundately 

 lunate ; peristome simple, thin, and straight ; columella reflected 

 over Jd. of the moderate umbilicus. 



Animal. — Foot with grey granulations and black interspaces, 

 under side greyish ; tentacles and muzzle black, darker than 

 foot, but the collar of the same color as foot ; color of shell with 

 containing animal black-brown. 



H. induta is related to H. Lincolniensis, Pf., from which it 

 differs most particularly in its angulated whorls. 



Dimensions. — Diameters "51 and "5, Height '35 of an inch. 



Habitat. — Among rocks and under stones about the north Para 

 River, and ascending to the summit of Kaiserstuhl (about 2000 

 feet elevation). Many examples. 



Helix pictilis. 



Shell umbilicated, globosely-conical, keeled, thin, ornamented 

 with distant, strong, unequal, regular curved ribs ; the interstices 

 crossed by minute and close raised lines, which produce in certain 

 positions a satiny lustre, colored above with light chestnut and 

 pale horn or colorless segments ; spire broadly conical obtuse ; 

 whorls 5, flattish, the last angulated, the carina denticulated ; base 

 slightly sloping, finely ribbed, colored as above ; aperture angular, 

 broadly lunate ; peristome thin, simple ; columella slightly 

 reflected, umbilicus small. 



