RETUSA. 231 



behind, dilated in front ; iiiner lip straight, elongated, simple; outer 

 lip strongly produced behind {Ad.). 



Mino-Sima, Jajmn, 63 fms. 



Sao phiala Ad., Ann. Mag. N. H. (3), ix, p. 160. 



The peculiar contraction at the anterior part of the body-wborl 

 just below the apex, the produced outer lip, and the.straight simple 

 inner lip are the chief peculiarities of this species (Ad.). 



R. ELLiPTiCA A. Adams. Uvfigured. 



Shell small, white, thin, elongate-ovate, subdilated in front, longi- 

 tudinally streaked, transversely striated above and below ; aperture 

 linear, dilated below; inner lip straight calloused in the middle ; 

 outer lip with arcuate margin, posteriorly produced, rounded (Ad.). 



Tsu-Sima, Japan, 16 fras. 



Sao e/Mptim A. Ad., Ann. Mag. N. H. (3), ix, p. 160. 



A small white, longitudinally strigose, ovate species, differing in 

 form and appearance from any other of the group (Ad.). 



R. PELLYi Smith. UnRgured. 



Shell pyriform, the base double as wide as the top ; white, trans- 

 versely, distantly striated at base ; vertex umbilicated, surrounded 

 outside by a lira (decussated by curved longitudinal, rather evanes- 

 cent stride). Aperture narrow above, produced above the vertex, 

 greatly dilated below. Columella short, thickened ; umbilical region 

 perforated. Alt. 4, diam. 2 mill. (S.). 



Persian Gulf (Col. Felly). 



Cylichna (Sao) pe/lyi E. A. Smith, Ann. Mag. Nat. Hist. (4), ix, 

 p. 354 (May, 1872). 



Considerably larger than C. nitida A. Ad., and j^roportionaiely 

 narrower towards the upper end. 



R. OBESiuscuLA Brugnone. PL 23, figs. 60, CI. 



Shell 5 mill, high, 3 mill, wide, subconic-oval, truncated obliquely 

 above, shining and smooth, with fine and numerous striae of growth, 

 stronger toward the summit; last whorl veutricose. Aperture nar- 

 row and linear above, below enlarged, rounded and everted a little 

 to the left, the outer lip gently curved and projecting a little above 

 the apex ; columella rather straight, inclined to the left, bending 

 outwards, and with an obscure fold in the middle. The apex with 

 a narrow, funnel-shaped, sharp edged umbilicus ; base with a small 

 umbilical slit partly covered by the reflection of the columella. 



