PRESTON : DESCRIPTIONS OF NEW MARINE SHELLS. 77 



slightly recurved ; the shell is of a pinkish-white colour, having a brown band 

 just below the periphery; in many specimens the region of the canal is tinged 

 with rose pink, but this character does not appear to be always constant. 



Alt. 20 millim. ; diam. maj. 13. Aperture, alt. 5 millim. ; diam. maj. 3. 



Hah. — Ceylon. 



This species appears to be most nearly allied to Murex {Ocinehra) 

 nucula, Reeve, from the Philippines, but differs in being much more oval 

 in general shape and the canal being less recurved than is the case in that 

 species ; moreover it has only five varices on the body-whorl whereas in 

 M. micula there are six. 



Copalliophila dissimulans, n. sp. 



PI. vii, figs. 5, 6. 



Shell conical, exteriorly white ; whorls 5 — 6, obliquely ribbed, the ribs in 

 places being raised into tubercles ; suture impressed ; aperture ovate ; colum- 

 ella somewhat curved, tinged with pinkish purple ; canal short and curved ; 

 peristome thin, erect ; interior of shell painted with a chestnut coloured band 

 below the periphery and ending abruptly about two millimetres from the 

 edge of the peristome. 



Alt. 9 minim. ; diam. maj. 6.5. Aperture, alt. 4.5 millim. ; diam. 1.5. 



Hah. — Ceylon. 



Mueronalia biptsi, n sp. 



PI. vii, figs. 7, 8. 



Shell fusiform, rather attenuated, smooth, polished, semi-transparent white ; 

 whorls 9, convex, the apex strongly mucronated; suture slightly channelled; 

 aperture inversely auriform ; columella twisted ; peristome simple. 



Alt. 12.5 millim.; diam. maj. 5. Aperature, alt. 4 millim. ; diam 2. 



Hah. — Ceylon. 



This species appears to be somewhat closely allied to J/, philijqniiarum, 

 Sby., but is easily distinguished from that species by its more elongate form, 

 the more transparent texture of the shell, and by the presence of the chan- 

 nelled suture which is not noticeable in M. phiUppinarum. 



Styloptygma laeteola, i . sp. 

 PI. vi, figs. 9, 10. 



Shell attenuate, fusiform, polished, striated with lines of growth transparent 

 white, encircled with an opaque milky-white band below the suture ; whorls 

 9 — 10, slightly convex, and flattened above, giving the impressed suture an 

 almost channelled appearance ; columella arched ; aperture obliquely ovate ; 

 peristome simple. 



Alt. 9 millim. ; diam. maj. 2. Aperture, alt. 2 millim. ; diam. maj. i 



Hah. — Galle, Ceylon. 



