259 



l'"ain. Mak(;i\i:i,i,ii)a1';. 

 Marginella Lamarck. 



1. J\Iaroi}iclla viroo n. sp. PI. X\'III, fi^'. 6. 



Stat. 211. 5''ioo'7S., I20°45'.5!C. Haiuhi Sea. 1158 M. Coarse c,n"cy mud. i Spec. 



Shell ovately-fusiform, \vhiu% thin, pellucid, smooth antl shinino'; s|)irc conical, with very 

 obtuse apex. Whorls about 5, nearly straight, with a callous suture, which is scarcely visible, 

 slightly ascending near the aperture; last whorl rather broad above the middle;, a litth; contracted 

 below. Aperture elongate, its margin slightly expanded and thickened, smooth internally (perhaps 

 on account of youth), columellar margin with 4 strong plicae of which the upper and next 

 nearly horizontal, the third and fourth (bordering the sinus) very oblique. Sinus shallow, broad. 



Alt. 9, lat. 47h; apert. alt. 57.^, lat. i^j. Mill. 



Unfortunately the only specimen has a somewhat juvenile appearance, but as it is from 

 a considerable depth and contains the soft parts, I thought it deserved to be described. Mr. E, 

 A, Smith I.S.O., from the British Museum, who had the kindness to compare it, writes that it 

 is allied to but not the same as ill. Walker i Smith (Proc. Mai. Soc. Lend. Ill, p. 208, fig. i), 

 but that shell has a much sharper spire, the general shape is less ventricose, the aperture is . 

 narrower. The circumstance that the outer margin of aperture is smooth in the new species, 

 denticulated in Walkeri^ may be of little importance, since it is possible even probable that 

 M. virgo might exhibit the same character if perfectly developed. 



2. Marginella rtifolineaia n. sp. PI. XVIII, fig. 7. 



Stat. 105. 6°8'N., 121° 19' E. Sulu-archipelago. 275 M. Coralbottom. i Spec. 



Shell ovately-fusiform, white with two narrow, light rufous spiral lines on last whorl, 

 of which the upper one runs just above the suture in the upper whorls, on the periphery in 

 last whorl, the second line runs near the base of last whorl, making its appearance, just above 

 the upper columellar fold ; the shell is moderately strong, semipellucid, smooth and rather shining. 

 Spire conical, with very obtuse apex, whorls about 5, nearly straight, with a slightly impressed 

 callous suture, slightly ascending near the aperture •, last whorl moderately convex at the periphery. 

 Aperture elongate, its margin with a strong rounded varix exteriorly, interiorly thickened, with 

 two rather strong teeth in the upper part and a few small ones (about 4) below these. Columellar 

 margin with four strong plicae, of which the upper two nearly horizontal, the third more oblique, 

 the fourth, bordering the shallow sinus, very oblique. 



Alt. 7Y2, lat. 4; apert. alt. 5, lat. 1^5 Mill. 



This species is also allied to M. Walkeri Smith and still more to M. virgo, but it is 

 thicker and less elongate than this latter species, the peristome is thickened, with some teeth 

 interiorly, the colour is different and the sutures are much more conspicuous, the lower columellar 

 plicae are less oblique, especially that bordering the sinus. Though some of these characters 

 may depend on age, especially those of the peristome, I think they suffice to keep them separate. 

 The shell is fresh and seems to have lived at the recorded depth. 



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