96 HELIX-EUHADRA. 



The shell is about the size of H. peliomphala, and like that spe- 

 cies in general form, but more obtuse and lower in the spire. It is 

 moderately thin, moderately solid. The surface is scarcely shining, 

 with very fine growth-striae (not nearly so coarse and irregular as 

 in peliomphala, nipponensis or brandti and even less unequal than 

 those of amalice) ; these striae are decussated by excessively minute 

 spiral strise (which are not regular and well defined as in peliomphala 

 and its varieties, but are irregular, rather undulating, and are more 

 minute and closer than in amalice, far closer than in the circle of 

 peliomphala, etc.). The spire is a little convex, the inner two whorls 

 nearly plane. The apical whorl is large, obviously larger than in 

 peliomphala. The suture is moderately and evenly impressed from 

 apex to its termination. Whorls 5J, all of them somewhat convex, 

 the last rather deeply deflexed in front. Aperture oblique, broad- 

 lunar, white inside ; peristome reflexed all around, white, the ter- 

 minations converging, joined by a scarcely perceptible callus. Um- 

 bilicus rather narrow, very deeply penetrating and showing the 

 whorls to the apex. 



Alt. 17, greater diam. 33, lesser 27? mill. ; oblique alt. of aper- 

 ture 16, width 19J ; width of umbilicus 4? mill. 



Simoda, Japan. 



Helix simodce JAY, in Perry's Narrative of the Exped. of an 

 American Squadron to the China Seas and Japan, in 1852-'54, ii, 

 p. 294, t. 5, f. 1, 2, 3, 1856. (Exclusive of the " var., t. 5, f. 4-6," 

 which is H. peliomphala Pfr.) 



I have received, through the courtesy of Prof. R. P. WHITFIELD 

 of the American Museum of Natural History, Central Park, New 

 York City, the type specimen of H. simodce. It proves to be quite 

 distinct from other described Japanese species. It is figured and 

 described above. The spiral sculpture is more minute than in any 

 other species of Camcena, and appears under the lens to consist of 

 tiny wrinkles which descend somewhat as well as revolve, taking the 

 direction of tangents from the suture. The umbilicus, while it is not 

 wider at its opening than in peliomphala, does not suddenly contract 

 to a mere perforation as it does in the allies of peliomphala, but is a 

 cylindrical tube of sufficient size to enable one to see each whorl as 

 far as the apex, if a little care be taken. 



H. CONNIVEXS Pfeiffer. PI. 37, figs. 41, 42. 



Shell depressed, rather broadly umbilicate, solid and strong, whit- 

 ish straw-colored, with a narrow chestnut band (rarely indistinct or 



