809 



what to 0. gracilis, but there is only one plait on the columella. 

 Prom 0. pulchellus it is distinguished by the channelled sutures, 

 and by the coloured line across the whorls. 

 Singapore. Lieut. Taylor. (Mus. Cuming.) 



15. Obeliscus aciculatus (pi. clxxi. f. 21), A. Adams. 



O. testa turrito-subulata, angusta, fulvescenti ; anfractibus pla- 

 nis, frequentibus, longitudinaliter substriatis, suturis profundis, 

 anfractu ultimo rotundato; apertura ovali, antice subproducta; 

 columella antice reflexa, postice j)lica valida instructa. 



A slender, subulate species, of a red-brown colour, with the 

 aperture rather produced in front, and the columella anteriorly 

 reflexed and furnished with a single plait. 



Cagayan, province of Misamis j twenty-five fathoms, sandy mud. 

 H. a (Mus. Cuming.) 



16. Obeliscus pusillus (pi. clxxi. f. 7), A. Adams. 



O. testa conico-turrita, perforata, apice obtuso ; alba, nitida ; 

 anfractibus planiusculis, suturis profundi?, anfractu ultimo sub- 

 angulato ; apertura ovali, antice subreflexa ; columella recta, plicis 

 duabus instructa. 



A small, white, shining species, with the apex obtuse, the last 

 whorl somewhat angulated, and the columella with only two 

 plaits. 



Catanuan, province of Luzon ; ten fathoms, sandy mud. H. C. 

 (Mus. Cuming.) 



17. Obeliscus balteatus (pi. clxxi. f. 25), A.Adams. 



O. testa parva, conico-turrita, perforata, albida, nitida, fascia 

 rufa ornata; anfractibus planiusculis, ultimo angulato; apertura 

 ovata, antice producta, angustata ; columella antice reflexa, bipli- 

 cata, plica postica valida ; labro, in medio, angulato. 



A small, umbilicated, shining, white species, with the whorls 

 ornamented with a rufous band, and with two plaits on the colu- 

 mella. 



Cagayan, province of Misamis, Isle of Mindanao; twenty-five 

 fathoms, sandy mud. H. C. (Mus. Cuming.) 



18. Obeliscus fastigium (pi. clxxi. f. 8), A. Adams. 



0. testa conico-turrita, perforata, alba, nitida, Isevissima ; an- 

 fractibus planis, ultimo subangulato, subventricoso ; apertura 

 ovali; columella recta, triplicata, plicis transversis; labro intus 

 lirato. 



