Murdoch and Suter. — Results of Dredging. 279 



Type in the Colonial Museum, Wellington. 



Obs. Two dead shells were obtained. By its distinct spiral 

 ornamentation, the elongate form, and small size it is well 

 characterized. 



2. Philine umbilicata, n. sp. Plate XXI, fig. 2. 



Shell small, oval, truncate above, umbilicated. Sculpture 

 inconspicuous, distant very fine microscopical lines are crossed 

 by irregular curved and very fine growth-lines. Colour white. 

 Spire slightly immersed. Protoconch minute, smooth. Whorls 2, 

 very rapidly increasing, the last truncated above, rounded at 

 the base, narrowed and flatly convex above. Aperture elongated- 

 oval, slightly excavated above by the body-whorl, broad and 

 open toward the base. Outer lip thin, sharp, almost straight 

 for the upper two-thirds, then forming a regular arch with the 

 convex basal lip. Inner lip forming a rather broad but very 

 thin callosity upon the body, inconspicuous on the columella, 

 which descends with a rather sharp margin, but slightly exca- 

 vated, to the basal lip. Umbilicus patulous, distinct. Alti- 

 tude, 3 - 5 mm. ; diameter, 2 "25 mm. 



Type in the Colonial Museum, Wellington. 



Obs. Four dead shells. This species is distinguished by the 

 almost total absence of spiral sculpture and the presence of a 

 distinct umbilicus, which is an exception in this genus. 



3. Cylichna pygmsea, A. Adams. 



Bulla {Cylichna) pygmcea, A. Adams, Thes. Conch., vol. ii, p. 595, 

 pi. cxxv, fig. 150, 1850 ; Man. Conch. (1), vol. xv, p. 319, 

 pi. lix, fig. 9. Cylichna atkinsoni, T. -Woods, P.R.S. Tasm., 

 1876, p. 156. 



One dead shell only, which agrees with specimens from Tas- 

 mania and South Australia. 



4. Cylichna thetidis, Hedley. 



Memoirs Austral. Mus., iv, part 6, pp. 395-96, fig. Ill in text, 

 1903. 



One dead shell turned up ; the specimen was identified by 

 Mr. Hedley, who informed us that two more from New Zealand 

 dredgings were in his possession. 



5. Cylichna simplex, n. sp. Plate XXI, figs. 3, 4. 



Shell small, subcylindrical, involute, imperforate, thin and 

 glossy. The sculpture consists of exceedingly fine growth-stria?, 

 with here and there faintly marked growth-periods ; the axial 



