430 



var. abyssicola n. var. 



Stat. 88. o°34'.6N., ii9°8'.5E. Makassar-strait. 1301 M. Fine grey mud. i Spec. 



Smaller than the type, having only a length of 5^4 Mill., thinner, with less developed 

 sculpture and quite transparently white, but agreeing in all its essential characters. 



2. Mangilia apollinea Melvill. 



Melvill. Proc. Mai. Soc. Lond. Vol. VI, p. 166, Pi. 10, fig. 20. 



Stat. 261. Elat, West coast of Great Kei-island. 27 M. Mud. i Spec. 



Mr. Melvill, who examined this specimen, says it is in better condition and more full- 

 grown than his Gulf of Oman specimens, but otherwise it differs only very little. 



3. Mangilia caver jwsa Reeve. 



Reeve. Proc. Zool. Soc. Lond. 1846, p. 60. 



Conch. Ic. Vol. Ill, Mangelia, fig. 8. 



Tryon. Man. of Conch. Vol. VI, p. 251, PI. 21, fig. 26. 



Stat. 51. Madura-bay. 69 — 91 M. Fine grey sand, coarse sand with shells and stones. 3 Spec. 

 Stat. 260. Near North point of Nuhu Jaan, Kei-islands. 90 M. Sand, coral and shells. 4 Spec. 



Slightly varying in number of ribs but agreeing in other particulars. 



4. Mangilia biitonensis n. sp. PI. XXVIII, fig. 8. . 



Stat. 204. Between islands ofWowoni and Buton, northern entrance of Buton-strait. 75 — 94 M. 

 Sand with dead shells, i Spec. 



Shell elongately fusiform, with high spire and moderately long canal, smooth, shining, 

 pellucid, white. Whorls 8, of which 3^/2 seem to form a convexly-whorled nucleus, of these 

 the upper 2 are smooth, the rest with crowded axial ribs ; post-nuclear whorls with more remote 

 ribs, 7 or 8 on penultimate whorl, each rib with a small point near its middle, giving an angular 

 appearance to these whorls, though the interstices are nearly regularly rounded, upper part of 

 whorls very faintly crenulate, base of last whorl with very faint spiral striae, more conspicuous 

 on ribs and a few stronger ones on canal. Aperture oblong, narrow, slightly angular above, 

 below with a rather wide canal; peristome sharp, with a shallow sinus above and a strong rib 

 at some distance behind its margin, columellar margin slightly concave above, directed to the 

 left below, with a thin layer of enamel, interior of aperture smooth. 



Ak. 11Y3, lat. 4; apert. alt. 5Y4, lat. i Mill. 



This species has some resemblance with M. polita Hinds, but the ribs are less regularly 

 placed, the canal is less slender and in that species the peristome is plain, though this may 

 depend on age. 



5. Mangilia riifostrigata n. sp. PI. XXVIII, fig. 9. 



Stat. 159. o°59'.iS., 1 29° 48'. 8 E. Halmahera-sea. 411 M. Coarse sand. 2 Spec. 



66 



