MELVILL : NEW SPECIES OF TURRID^. 165 



An elegant pure white and very smootli Drillia, wHcli, as Dr. W. H. 

 Dall observes, in form belongs to the same group as his D. thea,^ 

 this being an olivaceous species, with a silky epidermis, found ofi 

 the Florida and contiguous coasts in about 60-100 fathoms. 



Drillia insignita, n.sp. (PL IV, Fig. 6.) 



Shell fusiform, gradually attenuate, incrassate, of a rich sienna- 

 brown in colour; whorls 12, including three nuclear, smooth, 

 shining brown, semidiaphanous, centrally carinate, the fourth whorl 

 with numerous somewhat undeveloped noduled riblets, the remaining 

 eight spirally ornamented with close revolving lines, crossing the 

 conspicuously noduled longitudinal ribs; nodules white, body- 

 whorl obliquely twelve-ribbed, below the periphery obscurely 

 fasciated with white ; canal somewhat extended, straight colu- 

 mellarly, outer lip efiuse, sinus well marked, narrow, but deep. 



Long. 25, diam. 10 mm. 



Hah. — Philippine Islands. 



Allied to D. GriffitJiii ^ and major, ^ both of Gray, but smaller 

 and more compact. (Insignitus, distinguished.) 



Drillia latiriformis, n.sp. (PI. IV, Fig. 7.) 



Shell fusiform, with fairly broadened body-whorl, but very 

 attenuate spire ; whorls 9, of which the two nuclear are smooth, 

 diaphanous, and globular, the remainder with strong, rounded, 

 shining, nodulous longitudinal ribs, about eight in number on the 

 penultimate and body-whorls. Suturally strongly raised-plicate, 

 and spirally furnished with regular raised revolving lines, chestnut 

 in colour, thus contrasting with the paler ochreous brown surface ; 

 these raised striae are very close and frequent on the body-whorl, 

 especially below the periphery. Mouth oblong, outer lip some- 

 what thin, with sinus rather broad and deep. Columellar margin 

 oblique, canal abbreviate. 



Long. 17, lat. 6 mm. 



Hah. — New Caledonia. 



In the opinion of Mr. Edgar Smith, this very interesting species 

 had not attained its maximum of growth. This may be the 

 case ; but, at all events, the outer lip, with the well-expressed sinus, 

 is sufficiently formed for all practical purposes. The style of pattern 

 is somewhat similar to the beautiful Drillia euchroes, Melv.,* from 

 the Persian Gulf, but that is smooth throughout. Both species are 

 small mimics of Latirus turritus, Gmel., and others of that group. 



1 Proc. U.S. National Mus., vi, 1883, 328, pi. x, fig. 5. 



^ Reeve, Conch. Icon. Pleurotoma, pi. xix, fig. 157. 



' Reeve, Conch. Icon. Pleurotoma, pi. vii, fig. 59. 



* Proc. Malac. Soc. Lond., x, 1912, p. 250, pi. xi, fig. II. 



