DESCRIPTIONS OF SIXTY-EIGHT NEW SHELLS. 225 



decorato, omnibus his liris stramineo-ochraceis ; apertura ovato-oblonga, sinu 



distincto, lato, canali brevissimo, Iato, margine columellari excavato. 

 Long. 9-25, lat. 2-50 mm. 



Hab. Gulf of Oman, lat. 24° 58' N., long. 56° 54' E., 156 fathoms. 



A little species of bold contour, and very distinct in both sculpture and 

 painting of the spiral straw-coloured lira; surrounding the whorls, wbich are 

 not costulate. One spiral lira, acute and prominent, is especially noticeable at 

 the base of each whorl, just above the sutures. 



A good many examples occurred in the dredging, as above, in shell-sand. 

 MANGILIA COMIDELEUCA *, sp. n. (PI. D. fig. 5.) 

 M. testa parva, angulari, fusiformi, omnino albida, solida ; anfractibus 9, 



quorum duo apicales lreves, globulares, vitrei, cscteris ad medium angulatis 



longitudinaliter paucicostatis, spiraliter undique rudiliratis, interstitiis albis 



labro dorsaliter multum incrassato, angulari ; apertura sinuoso-oblonga, sinu 



perlato, margine columellari tristriato, canali lato, brevi. 

 Long. 8, lat. 3 mm. 



Hab. Persian Gulf, Mussandam, 47 fathoms. 



Most resembling M. spurca, Hinds, found abundantly in the same region, but 

 differing in colour (the new form being entirely white), in size (8 as against 14 

 or 15 mm.), and in greater angularity of whorl. The somewhat sinuous or 

 trigonous aperture and very thickened peristome are the same in both species. 

 Only one or two examples have yet occurred. 



CLATHURELLA OPSIMATHESJ sp. n. (PI. C. fig. 19.) 



C. testa oblongo-f usiformi, solidula, nitida, cinerea, albo et fusco zonata ; an- 

 fractibus 10, quorum 3 apicales, cseteris circa suturas Isevibus. planatis, alitor 

 undique longitudinaliter crassicostatis, costis paucis (numero ultimum apud 

 anfractum 10), spiraliter pulchre superne 3-, ultimo 10-liratis (ad periphe- 

 riam albizonato), liris albo-cinereis, conspicuis, supra costas angulosis ; aper- 

 tura oblonga, labro incrassato, echinulato, fusco et albo depicto, sinu lato, 

 haud prof undo ; columella recta, canali lato, brevi. 



Long. 1650, lat. 6 mm. 



Hab. Persian Gulf, Sheikh Shuaib Island, 15 fathoms. 



Hitherto confounded with C. (Glypliostoma) ritgosa, Migh., a quite different 



species. It is a prettily sculptured and painted shell, with conspicuous beading 



and spiral well-cut liree. 



CLATHURELLA SYKESII, sp. n. (PI. D. fig. 4.) 



C. testa parva, perangusta, attenuato-fusiformi, albo-cinerea ; anfractibus 8 — 9, 

 quorum apicales duo lreves, cseteris ad suturas permultum impressis, angulosis 

 ventricosis, longitudinaliter acuticostulatis, costis paucis, numero ultimum 

 apud anfractum circa 9, undique spiraliter liratis, liris rudibus (in pcnultimo 

 et ultimo circa G), prominulis ; apertura ovata, labro tcnui, sinu conspicuo 

 profundo, canali longo. 



* xo/aiSti, altogether ; Xsuxos, white. 

 t o-^i/naQny, ] U te in being discerned. 



