154 Mr. II. C. Fulton on 



Mr. S. I. Dii Costa, who has male a special stiuly of tliis 

 froiins, is unable to identify it with any .species known to 

 him. 



Placostt/lus {Euplacostyhis) cylindricus, sp. n. 



(I'l. X. Hg. a.) 



Shell elongate, almost imperforate, solid; spire reddish, 

 lower part covered by a trreenish-brown cuticle ; whoris 0^, 

 sli'ditlv convex, rather rapidly increasinu;, last two with 

 longitudinal growth-lines, crossed on middle w horls b}' obscure 

 spiral lines, giving the appearance under the lens of a some- 

 w hat reticulated surface, last whorl indistinctly malleated in 

 parts ; aperture ear-shaped, dirty white within ; peristome 

 thiekened, exp:\nded inwardly, white, outer edge yellowisli, 

 margins connected by a thin callus, columella with a white, 

 thick, spirally entering fold. 



Maj. diam. 23, alt. 71 mm. 



Peristome: maj. diam. 27, alt. 33 mm. 



Ilah. Isabel Island, Solomons {Meek). 



Separated from Seemani, Dolirn, by its narrow cylindrical 

 form, more rapidly increasing wliorls, and much shorter 

 })eristome. 



From /co7'oensi<t, Garrett, to which it has some resemblance 

 in form, it can be easily distinguished by its larger size and 

 dark-coloured epidermis. Of the three specimens before me 

 none appear to have the punctures found on the spiral whorls 

 of the two above-mentioned species; but that character may 

 have been worn off. 



Stenogyra [Euonyma) Beclceri, sp. n. 

 (PI. X. tig. 7.) 



Shell elongately fusiform, moderately tliin, polished, sub- 

 transparent, nucleus whitish, lower whorls of a pale olive- 

 greenish colour ; apex obtuse, rounded ; whorls 12, slightly 

 convex, first three smooth, slowly and regularly increasing, 

 lower whorls with indistinct lines of growtii, slightly crenu- 

 lated at the suture; aperture oblong-oval; columella slightly 

 curved, white, slightly expanded ; peristome continuous with 

 columella, thin. 



Maj. diam. 10, length 44 mm. 



Length of aperture 9, width 5 mm. 



lloh. Pondoland {Dr. 11. Becker). 



Differs from S. Parcelli, Melv. & Pons.* (the type of 



* Ann. & Mag. Nat. Hist. 1901, vol. viii. p. 3J7, pi. ii. fig. 0. 



