409 



on the last wlioii llu" number of i)riiu-i|)al lirae amounts to 20. Aperture ()l)lonL,^ narrow, witli 

 thin peristome, protracted about the miiKlK-, with a (Uh'|), rather wide sinus above (fig. i ,) cohnnelhir 

 side with a thick layer of enamel, with a llat, whitish tubercle above at the sinus, straij^ht 

 below, peristome margined with red-brown interiorl\-, with a light violet laj-er of 

 enamel behind, in the depth again red-brown, upper [)art of columellar layer red- 

 brown. Canal slightly upturned. 



Alt. 18 (^ma)- have been 20), lat. 6'/.!; apert. alt. from upper [)art of sinus 

 to base of canal 8'/.,, lat. 2'/.. Mill. 



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

 It has some superficial resemblance with Plcurofoiua (Drillia) castanca Rkkvk, 

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

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

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

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

 which should better agree with the Siboga-specimen. I can scarcely believe that DrUUa rubido- 

 the differences could depend on age, as Weink:.\uff suggests, at least the upper ""'^ °' ^^' 

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

 shell, more strombiform. 



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



Stat. 159. o°59'.iS., 129° 28'. 8 E. Halmahera-sea. 411 M. i 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 1Y3 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 j^art 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 crossing 

 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. 28^4, lat. 8; apert. alt. 12Y3, lat. about f\„ 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 



