192 MR. E. A. SMITH ON MOLLUSCA FROM JAPAN. [Feb. 18, 



far apart, and are not found in the excavation at the upper part of 

 the volutions : aperture small, occupying rather more than a third of 

 the entire length ; sinus deep, inferior sinuation very shallow ; canal 

 very wide, not recurved ; columella covered with a pale brownish 

 callosity, tuberculated at the upper extremity. 



Length 18 millims., diam. 6. 



Hab. Station 15. 



This species is closely affined to P. ohllquata. Reeve. It differs 

 in being more slender, has a narrower concave portion at the top of 

 the whorls, and consequently longer rounded sides ; the costce are 

 more numerous and less produced inferiorly on the last volution; and 

 the surface, with the exception of the upper or depressed part of the 

 whorls, is ornamented with fine subdistaut liruise, which in nbliquata 

 are altogether wanting ; the basal canal, too, is broader, and the la- 

 brum has not the large swollen varix behind it which is characteristic 

 of Reeve's species. 



23. Drillia candens. (Plate XIX. fig. 17.) 



Shell shortly subfusiform, entirely white, shining, subpellucid : 

 v/hcrls 8, two nuclear ones large, globose, smooth, the rest rather 

 bulging towards the lower part, and a little constricted above, ob- 

 liquely ribbed and striated by the lines of growth ; costfe stouter on 

 the upper whorls than on the last, on which they are obsolete at the 

 middle ; they are very oblique and flexuous : the lower part of tlie 

 body-whorl is sculptured with fine oblique grooves, which by degrees 

 are less distinct on the upper portion ; sinus very wide and deep, inferior 

 sinus slight ; columella but little oblique, sinuous, covered with a 

 white shining enamel, with a small tubercle at the upper extremity ; 

 canal broad, very short, and not recurved. 



Length 12 millims., diam. 41. 



Hab. Stations 1 and 15. 



This is a very pretty species, of a diaphanous white tint, a little 

 more opaque just beneath the suture. Besides the fine lines of growtb, 

 other stri£e in a transverse direction, and equally fine, can be dis- 

 covered in parts under a powerful lens. For such a small shell the 

 sinus is remarkably large and deep ; the apical whorls, too, are pro- 

 portionally large. 



24. Drillia raricostata, (Plate XIX. fig. 18.) 



Shell elongate, shining, horny brown : whorls 8, two apical trans- 

 versely keeled and angled round the middle ; the rest concavely 

 excavated above, convex below, coarsely obliquely plicated, and some- 

 what margined beneath the suture ; plicfe abruptly terminating at 

 the concavity, eight on a whorl, very oblique, gradually shorter on as- 

 cending the spire, so that the upper rather acute ends fall about the 

 middle of the whorls ; costa) on last whorl obsolete at the base, which 

 is obliquely grooved : aperture very small, about one third as long 

 as the whole shell ; sinus deep, inferior sinuation shallow ; labrum 

 thin, curved and prominent, with a swollen varix some distance be- 

 hind the margin ; columella scarcely oblique, but slightly sinuous. 



