468 



3. .'Ifjs multhtriata n. s|). l'l. XX XII, (■|-,^ 2. 



Stat. n- Sailus kctjil, 1'atcrnostor-islands. 27 M. aiul loss. Coral and coralsand. 1 Spcc. 



Shell elonj^ated, with slicjhtly convex sides, attcnuatecl ahove, ihin, iransparent white; 

 sculpiure consistinjj of «jrowth-striae, which are rathcr coarse in some parts of the shcll and 

 esnecially lowards the spire, wherc they are more crowded, bein<ï more remote and fold-Hi<e 

 on the rest of body-whorl; the whole shell is covered with fine sjjiral striae, very fine and 

 nearlv microscopic on the central part, more conspiciious towards the extremities. Spire umbilicated, 

 enamelled, with a rounded border. Aperturc very narrow above, larger below, lip risin<i[ fr(;m 

 ihe vertcx, archcd biit not contorted, formini;^ a rey[iilar sinus above, outer margin slightly 

 convex, thickened interiorly ; basal margin forming a compressed sinus, columellar side scarcely 

 enamelled on the slightly convex body, columella short, slightly concave, with a smal), contorted 

 fold at its base, niaking it slightly truncatcd; behind the columella an elongated, narrow, 

 nmbilical slit is bordered by a rounded margin. 



Alt. from spire to base of aperture 10^,, lat. 5'/^ apert. alt. i r'/n 'at. above '/j, below 2 Mill. 



This specimen, on account of its thickened peristome, seems to be adult; in shape it 

 much resembles A. cylindrica Helbl. v. clongata, but it differs from that and most other 

 species, by its spiral striae over the whole shell, it is not allied to that species; the folded 

 columella locates it in the section Atys s. str. 



4. Atys tor til o sa A. Adams. 



Adams. Thes. Conchyl. Vol. II, p. 587, PI. 125, fig. 120. 



Reeve. Conch. Ie. Vol. XVII, Atys, fig. 15. 



PiLSBRV. Man. of Conch. Vol. XV, p. 264, PI. 23, fig. 66, ^j. 



KOBELT. Martini-Chemn. Conch. Cab. Kd. II, Vol. I, Bullacea, p. 25, PI. 8, fig. 7, 8. 



Stat. 184. Near Kampong Kelang, South coast ol Manipa-island. 36 M. Coral, sand. i Spec. 

 Stat. 260. Near Xorth point of Nuhu Jaan, Kci-islands. 90 M. Sand, coral and shells. i Spec. 



5. jltys stibtortuosa n. sp. PI. XXXII, fig. 3. 



Stat. 4. Djangkar (Java), 9 M. Coarse sand. 4 Spec. 



Stat. 172. Gisser, Reef. i Spec. 



Stat. 193. Sanana-bay, East coast of Sula Besi, 22 ]\I. Mud. i Spec. 



Stat. 285. South coast of Timor. 34 M. I.iniit betwecn mud and coral. Lithothamnion. i Spec. 



Shell convexly-oval, attenuated and contracted above, narrow below, thin, fragile, white. 

 Sculpture con.sisting of very fine growth-striae and at both ends, strong spiral striae, which are 

 not crowded, though a little closcr at the extremities; a mcdian zone, scarcely a tliird ])art of 

 the total dorsal length, remaining smooth, except for excessively minute, spiral striae, traceable on 

 nearly the whole shell, under a very strong lens. Spire concave, with a small enamellous 

 centre, bordered by a rounded, opaque, white rim; below this rim the shcll is slightly contracted. 

 Lip from its inferior to upper part, slightly contracted, forming an angle at its junction with 

 the outer margin, by the ending of the circum-apical rim; the outer margin at first concave 



ló 



