414 



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



Stat. 116. West of Kwandang-bay-entrance. 72 M. Fine sand with mud. i Spec. 



Stat. 162. Between Loslos and Broken-islands. West of Salawatti. 18 M. Coarse and fine 



sand with clay and shells, i Spec. 

 Stat. 164. i°42'.5 S., i30°47'.5 E. Near West New-Guinea. 32 M. Sand, small stones and shells. 



2 Spec. 

 Stat. 260. Near North point of Nuhu Jaan. Kei-islands. 90 M. Sand, coral and shells, i Spec. 



The specimens slightly vary in sculpture, much more in colour, some specimens are 

 nearly or quite white, however I think this may be due to bleaching, as they are dead shells. 

 I have located the species in Drillia instead of Surctila^ though not without hesitation and 

 after I have seen that Hedley (Proc. Austral. Assoc, adv. sc. 1909, p. 365) has done the 

 same. Unfortunately I cannot see that any of the specimens contain the soft parts. 



21. Drillia aiidax Melvill & Standen. 



Melvill & Standen. Ann. Mag. Nat. Hist. Ser. 7, Vol. XII, 1903, p. 313, PI. 23, fig. i. 

 Stat. 306. 8°27'S., 122° 54'. 5 E. Savu-sea. 247 M. Sandy mud. 2 Spec. 



The sculpture of the Siboga-specimens is coarser than that of a specimen from the Gulf 

 of Oman presented to me by Mr. Melvill, especially on last whorl, but otherwise I see no 

 differences of any importance. These differences in sculpture may be partly due to variability, 

 the localities being very remote, partly be caused by the Siboga-specimens being dead, which 

 renders sculpture more conspicuous, as long as the shells are not worn. 



22. Drillia kwandangensis n. sp. PI. XXVI, fig. 9. 



Stat. 114. Kwandang-bay-entrance. 75 M. Hard sand, very fine, i Spec. 



Shell elongately fusiform, strong, rather dark reddish-brown. Whorls 8, of which 3 form 

 a smooth, red-brown nucleus ; post-nuclear whorls slightly convex, strongly lirate below the 

 suture, with at first 2, lower on 3 strong spiral lirae on each whorl, 14 in number on last 

 whorl and 2 faint ones below subsutural liration, more or less visible on upper whorls-, the 

 whorls are crossed by thick, rounded ribs, making the lirae slightly beaded, 9 in number on 

 penultimate whorl, faint on last one, which has a very strong rib behind peristome, moreover 

 the shell is crossed by conspicuous growth-lines. Aperture oblong, angular above, peristome 

 rather thin, with a conspicuous sinus above, then protracted towards the middle, columellar 

 margin concave above, straight below, with a strong layer of enamel, a tubercle above at the 

 sinus ; interior of aperture smooth, red-brown with a bluish tint in its depth. Canal straight, 

 rather narrow. 



Ah. 873, lat. 3; apert. alt. 3, lat. i Mill. 



Allied to the preceding species, but differing by its much coarser sculpture, which is 

 still considerably stronger than in the specimens of audax, recorded above, and by its uniform 

 red-brown colour. - 



50 



