40 9 



on the last whorl the number of principal lirae amounts to 20. Aperture oblong, narrow, with 

 thin peristome, protracted about the middle, with a deep, rather wide sinus above (fig. 1 ,) columellar 

 side with a thick layer of enamel, with a flat, whitish tubercle above at the sinus, straight 

 below, peristome margined with red-brown interiorly, with a light violet layer of 

 enamel behind, in the depth again red-brown, upper part of columellar layer red- 

 brown. Canal slightly upturned. 



Alt. 18 (may have been 20), lat. ó 1 /^ apert. alt. from upper part of sinus 

 to base of canal S 1 /*,, lat. 2 a / s Mill. 



Though this only specimen is incomplete, it seems to deserve description. 

 It has some superficial resemblance with Pleurotoma (Drillia) castanea Reeve, 

 by its shape and colour, but it differs in sculpture, is less angular, D. castanea 

 being according to description smooth, with fine grooves at the base, Weinkauff's 

 description and figure of that species (Conch. Cab. Pleurotoma, p. 102, PI. 22, 

 fig. 46) scarcely agree with those of Reeve, as his shell is "spiraliter liratula", 

 which should better agree with the Siboga-specimen. I can scarcely believe that DriiUa ruUdo- 

 the differences could depend on age, as Weinkauff suggests, at least the upper 

 whorls in my specimen are likewise lirate, Weinkauff's figure represents a much broader angular 

 shell, more strombiform. 



11. Drillia pagodaeformis n. sp. PI. XXVI, fig. 5. 



Stat. 159. o°59'.iS., i29°28'.8E. Halmahera-sea. 411 M. 1 Spec. 



Stat. 256. 5°26'.6S., I32°32'.5E. Near Kei-islands. 397 M. Greyish green mud. 2 Spec. 



Shell elongately fusiform, moderately solid, light yellowish-brown, lighter on the canal. 

 Whorls about 1 1, of which about \ l J„ form a smooth, inflated, laterally-inclined nucleus. Postnuclear 

 whorls angular, very convex, separated by a linear, undulated suture, accompanied by a faint 

 infrasutural rib, more conspicuous on upper whorls ; upper part of whorls conspicuously exca- 

 vated, lower part with strong, short, nodulous, oblique ribs, abruptly ending at the excavation, 

 scarcely reaching the basal suture in lower whorls. There are 3 faint, raised, spiral lirae in 

 the excavation, crossed by elegantly curved, partly riblike striae, 4 to 5 stronger lirae crossino- 

 the ribs, with a few faint striae above them on the limit between ribs and excavation in lower 

 whorls; on the penultimate whorl, another liration appears at some distance above the suture, 

 amounting to 3 rather remote, strong lirae on last whorl, and a large number (about 20) on 

 basal part of last whorl and canal ; body-whorl strongly attenuated below, ending in a long, 

 slightly curved canal. Aperture ovate, probably with a rather wide, deep sinus (the peristome 

 is broken), columellar margin concave above, strongly contorted below, with a thin layer of enamel. 



Alt. 28 8 / 4 , lat. 8; apert. alt. 1 2 1 /,, lat. about f/ z Mill. 



The specimen from Stat. 159 has the lirae in the excavation somewhat more apparent, 

 which may be due to its being a dead, calcified shell; one of the specimens from Stat. 256 is 

 young and very bad, that which has served for description, though incomplete, seemed to be 

 remarkable enough to deserve a name, for though broken, it is a rather fresh shell, the great 



45 



