524 Mr. H. B. Preston on new 



OrtJialicus sultana angustior, sp. n. 



Shell differing from typical Helix sultana, Dillwyn *, in 

 its more exsertcd spire and much narrower form. 

 Alt. 65, diam. maj. 40, diam. min. 33 mm. 

 Aperture : alt. 41, diam. 23'5 mm. 

 Hah. Eastern Peru. 



Opeas contamanoensis, sp. n. 



Shell obtusely subulate, polished, shining, greyish green ; 

 wliorls 85, the first two and a quarter submamillary, the 

 remanider slowly and regularly increasing, somewhat convex, 

 marked with slightly oblique, transverse strise ; suture well 

 impressed, irregularly crenellated and narrowly margined 

 below; columella margin very slightly curved, obliquely 

 truncate below, labrum simple acute ; aperture broadly and 

 rather shortly inversely auriform. 



Alt. 15, diam. maj. 3*75, diam. min. 3*5 mm. 



Aperture : alt. 3, diam. 1*5 mm. 



Hab. Contamano, Rio Ucayali, Eastern Peru. 



After examination of a long series of Opeas octona, Ein., 

 from many localities, I have been unable to altogether re- 

 concile the above species with any of them, though it is 

 undoubtedly closely allied to that form. 



Helicina hasijilaris, sp. n. 



Shell rather depressedly conic, slightly polished, brownish 

 yellow, painted with a broad band o£ pale reddish on the 

 lower half of the whorls, and showing to flesh-colour on the 

 base of the shell ; whorls 3^, the last acutely carinate at 

 the periphery, closely and lightly, spirally lirate ; suture 

 impressed, very narrowly margined above ; base of shell 

 sculptured with very closely-set, somewhat wav}', radiate, 

 microscopic striaj, crossed by very fine, wavy, revolving strias 

 and marked with fine, somewhat distant, dark, revolving 

 colour-lines; columella margin obliquely descending above, 

 excavated below, thickened into an almost nodulous pro- 

 jeclion at the base, whitish, outwardly and upwardly extending 

 into a granular, parietal callus; labrum bright yellow, 

 receding below, narrowly outwardly exjianded and reflexcd, 

 the outward expansion considerably diminishing above ; 



• Descriptive Cat. ii. 1817, p. 920. 



