186 DRILLIA. 



below the periphery chocolate, sometimes with a white band at 

 the base ; interior chocolate, with an irregular white superior 

 band. Length, 22 mill. 



Viti Islands, Philippines. 



The synonyms ate D. vidualoides, Qarrett (fig. 33), including 

 the larger specimens, usually completely chocolate below the 

 periphery; D. vidua, Reeve (= nigrozonata, Weink., fig. 34), 

 in which there is an inferior row of very small tubercles, more 

 or less apparent. D. vidua, Hinds (fig. 30), which Dr. WeinkaulT 

 considers a distinct species and refers to the Voy. Sulphur, 60, 

 t. 6, f. 6, for description and figure, is not to be found in that 

 work, and does not differ from the vidua of Reeve. I am inclined 

 to think P. Beckii of Weinkauff (PL 32, fig. 48) belongs here, 

 whatever may be said of the very obscure species figured by 

 Reeve under that name. 



D. BECKII, Reeve. PL 9, fig. 40. 



Shell oblong, cylindrically attenuated, aharp at the apex ; six- 

 angled, whorls longitudinally tuberculated at the angles ; the 

 entire shell olive-brown except the tubercles, which are white ; 

 columella and interior of the mouth brown ; canal very short. 



Length, 22 mill. 



/. Luzon, Philippines. 



If Reeve's figure of this shell is correct, Dr. Weinkauff 's iden- 

 tification of it (see D. unizonalis, above) must be erroneous. 



D. PULCHELLA, Reeve. PL 9, figs. 28, 29. 



Pink, with a chestnut band below the periphery, and a chestnut 

 line, interrupted by the tubercles. Length, 21 mill. 



Mauritius, Philippines, Cook's Islands. 



I think D. bilineata, Reeve (fig. 29), is identical; it appears 

 to differ only in the tuberculations being less sharp and tire 

 color not so bright, with a brownish tinge. No locality is given 

 for D.pulchella in the original description. 



D. L^TA, Hinds. PL 9, fig. 32 ; PL 11, fig. 87. 



Shell smooth, polished ; whorls with a strongly tuberculated 

 shoulder, the body-whorl with a second inferior row of small, 

 sometimes obsolete tubercles; white, banded with brown, the 

 band often more or less interrupted. Length, 9-lt mill. 



Sts. of Macassar, New Guinea, Viti Islands. 



