10 rKOCEEDIiXGS OF THE MALACOLOGICAL SOCIETY. 



Differs from the type in having darker, almost black bands, one 

 below, one above the periphery, and in being more strongly and 

 coarsely ribbed below. 



Helicella ttjmulorum var. Akucasensis, n.var. 



Differt a typo testa minore, magis elevata, fasciis minus inter- 

 ruptis, apertura latiore. Diam. maj. 105-11 -5, min. 9-5-10 5, 

 alt. 7'5-85mm. 



Ilal). — Arucas, Grand Canary. 



Differs from the type in being smaller, more elevated, in the 

 fascia) being less interrupted and less sharply defined, and in the 





I. I'lhiiKi Parryi, n.sp. 

 TI. Helix ToucJict var. gemindta, n., and portion of whorl, x 2. 

 . III. Helicella tiininlorum var. Arncasemis, u. 

 IV. Helicella tumulonim var. pulchra, n. 



aperture being wider. It approaches H. plialerata in contour, from 

 which, however, it is separated by the acute, compressed keel. 

 The specimens were found at the top of a volcanic cone, near Arucas, 

 at an altitude of 1200 feet. 



Hemicycla bituminosa var. unicolor, n.var. 



DifPert a typo testa unicolore, ad peripheriam magis angulata, 

 apertura latiore. 



Hah. — A-'alley of Gaidar, Grand Canary. 



Differs from the type in being of a unicolorous, corneous brown, in 

 being more strongly angulated at the periphery, and in having a 

 wider aperture. This variety was found with the type in the pro- 

 portion of 1 in .3, "in an isolated locality under one fig-tree." 



Hemicycla Pouchet var. geminata, n.var. 



Differt a typo testa tenuiore, sine fasciis, costulis geminatis. 



Mah. — Santa Cruz, Tenerife. 



The paired costula? and the smooth alternate interstices give this 

 variety a totally different appearance from the type ; its general 

 aspect rather recalls H. plicnria. It was taken by Colonel Parry with 

 the type in 1893, but it appears rather scarce, for a suite of about 

 fifty yielded only two specimens. 



