104 HELIX-CHAROPA. 



P. eremita SUT., Trans. N. Z. Inst. xxiii, p. 87, t. 17, f. 6, a, b. 

 This shell represents a middle form between Patula infiecta and 

 P. corniculum. 



P. BICONCAVA Pfr. (Vol. I, p. 130.) 



'This species, hitherto considered an Elcea or a Diplomphalus, has 

 been ascertained by Mr. Suter to agree in jaw and dentition with 

 the normal New Zealand Charopce. The same is true of the follow- 

 ing three species. See Trans. N. Z. Inst. xxiv, 1891, p. 295, pi. 22, 

 f. 30, 31 (jaw and dentition). Mr. Suter found the species in 

 Forty-mile Bush, North Island. 



P. SUBANTIALBA Suter. PL 19, figs. 40, 41, 42. 



Shell small, discoidal, light horny to white, somewhat shining, 

 fragile, transparent, very closely and finely ribbed ; ribs directed 

 forwards, slightly undulating on the upper surface, straight on the 

 side, about 90 ribs in the tenth of an inch (35 per mill.). Spire 

 deeply concave, infundibuliform. Whorls 5, the first ones very 

 narrovy, the last very large, nearly two-thirds of the diameter ; the 

 inner whorls swollen, the last descending rapidly on the inner side 

 and falling slowly arcuated to the periphery. Suture very deep. 

 Last whorl not descending. Aperture lunar, small, vertical, 

 strongly excavated by the penultimate whorl. Peristome straight, 

 acute ; upper margin narrowly, the lower more widely arcuated. 

 Margins convergent. Umbilicus large, deep, perspective, present- 

 ing nearly the same aspect as the upper surface. 



Diam. 1'75, height 0'8 mill. (Suter.) 



Hastwell, Mauriceville, Forty-mile Bush, North Island, New Zea- 

 land, damp places, under rotten wood in the bush. 



Diplomphalus subantiabla SUT., Tr. N. Z. Inst. xxii p. 226, t. 15, 

 f. 10, a, 6, (shell). Patula subantialba SUT., I. c. xxiv, p. 21)5, t. 22, 

 f. 32, 33 (jaw and dentition.) 



This shell is a good miniature of Helix antialba Beddome, of 

 Tasmania, but differs from it. 



P. HUTTONI Suter. PI. 19, figs. 43, 44, 45. 



Shell .small, dbooidal, light-horny, with fine well-developed ribs, 

 directed forwards and arcuated on the upper surface, slightly 

 undulated on the periphery; about 40 ribs in the tenth of an inch 

 (16 per mm.). Spire deeply concave, to about one-third of the 



