116 REVISION OF THE TOXOGLOSSATB MOLLUSCA OF N.Z., 



Habitat. — Avickland, 



Pleurotoma albula. Hutton, Cat. Marine Moll, of New Zealand, 

 Wellington, 1873, p, 12. P. antipodum, E. A. Smith, Ann. 

 and Mag of Nat. Hist., 1877, Vol. XIX., p. 491. 



nabitat. — Throughout New Zealand. 



Pleurotoma ischna. Watson, Jour. Lin. Soc. of London, Vol, 

 XV., p. 403 (1881). 



Habitat. —Dredged, by H.M.S. Challenger, N.E. of New Zealand. 



This species seems to differ from the last in being less deeply 

 sculptured. Mr, Watson places it in the subgenus Surcula. 



Drillia C?) maorum. E. a. Smith, Ann. and Mag. of Nat. Hist., 

 1877, Vol. 19, p, 497. P. Buchanani et P. Trailli, Hutton, 

 Manual of New Zealand Mollusca, 1880, p. 42 ; [not P. 

 Buchanani, Hutton, Cat. Tertiary Moll, of New Zealand, 

 1873, p. 4]. D. Trailli, Tryon, Man. Conch., Vol., VI., p, 

 206, pi. 34, fig. 90. 



Habitat. — Throughout New Zealand. 



This species is distinguished from P. Buchanani by having the 

 suture slightly margined, and the canal shorter. 



Drillia bulbacea. Watson, Jour, Lin. Soc. of London, Vol. 

 XV., p. 418 (1881), 



Habitat. — Dredged by H.M.S. Challenger, N.E. of New 

 Zealand. 



Hardly, I think, to be distinguished from the last species. 



Drillia (Vj am^ena. E. A. Smith, Ann. and Mag. of Nat. Hist., 

 1884, Vol. XIV,, p. 318. 



Habitat. — I much doubt whether this species really inhabits 

 New Zealand, I have never seen it. 



