CANTHARIDUS. 



139 



The animal of Bankivia is unknown. The species have been 

 grouped with Phasianella by some authors, but undoubtedly belong 

 in the immediate vicinity of Cantharidus and Phasianotrochus. 

 The nacreous layer is thin, but may be seen by chipping off the over- 

 lying porcellanous coat. 



C. FASCIATUS Menke. PL 40, figs. 28-33. 



Shell imperforate, elongated, turrited, thin, polished and shining, 

 white, creamy or pink, with spiral bands of pink, purplish- red or 

 purplish-brown, or narrow oblique zigzag stripes of pinkish-brown, 

 usually with a narrow subsutural fascia of dark or pinkish. Spire 

 elevated, slender ; apex a little blunt, dark ; whorls about 9, very 

 .slightly convex, a trifle impressed below the sutures ; surface (under 

 a lens) very densely, finely spirally striate ; last whorl rounded ; 

 base with a few concentric, separated, impressed lines ; aperture ovate, 

 outer lip thin, acute, columella sinuous, arcuate above and narrowly 

 reflexed, obliquely truncate below. Alt 19, diam. 8 mill. 



Southern Australian Shores. 



Phasianella fasciata MENKE, Synops. Meth. Moll., p. 141. P. 

 falminata MENKE and P. undatella MENKE, loc. cit., p. 141. (1830). 

 Bankivia varians (Beck) KRAUSS, Die Siidaf. Moll. p. 105, t. 6, f. 

 1. PHILIPPI, Conchyl. Cab. (Monogr. Phasianella and Bankivia), 

 p. 33, t. 5, f. 1-5. ANGAS, P. Z. S. 1867, p. 216. Vox MARTENS 

 Jahrb. d. deutsch. Mai. Gesell. 1874, p. 130. Trochns (Bankivia) 

 fasciatus WATSON. Kept, on " Challenger " Gasteropoda, p. 64. B. 

 purpurascens A. AD. P. Z. S. 1851, p. 171. B. major A. AD. P. Z. 

 S. 1851, p. 171. B. nitida A. AD. P. Z. S. 1851, p. 172. 



A variable species in size and coloration. I have seen, besides 

 the color-patterns noticed in the description above, unicolored deep 

 purple examples. 



Section Leiopyrga, H. and A. Adams. 



Leiopyrga H. and A. AD., Ann. and Mag. Nat. Hist. 3d ser., xi, 

 p. 19 (1863). Liopyrga FISCHER, Manuel, p. 810. 



Of the animal of Leiopyrga picturata Watson says : It has a 

 thin membranaceous Trochus-like operculum, but of fewer whorls 

 than usual in the genus. The nacre of the shell is very marked. 

 The mantle of the animal is very large and capacious, but thin. 

 The tentacles are large and very long, strongly ciliated with a long 

 deep posterior channel running down their whole length. The 

 eyes are very minute, on the end of rather long and fine tubercles. 



