24 PLACOSTYLUS, NEW ZEALAND. 



f. 8), and a copy of it in Favanne (pi. 65, f. v), which does not 

 represent a Placostylus, but probably an Amphidromus, and to figures 

 in Chemnitz's Conchylien Cabinet which represent a form of 'Placo- 

 stylus fib ratus. 



Melania aurantia Perry (Conchology, pi. '29, fig. 1, 1811), has 

 been referred to this species as a synonym, largely because Perry 

 gives the locality " New Zealand." The figure represents a short 

 species with strong columellar fold, and is totally incompatible with 

 B. shongi. I cannot identify it with anything not a rare dilemma 

 in dealing with Perry's preternaturally bad figures. 



Professor Hutton lias figured the jaw and teeth of this species. He 

 was also the first to unite B. novoseelandice Pfr. as a variety or syn- 

 onym. There are several errors in the bibliographic references given 

 by Suter and Kobelt. 



Bulimus antipodarum Gray (Dieffenbach's New Zealand, ii, p. 247, 

 1843) was formerly thought to be a young specimen of P. shonyi, but 

 recent investigations by Mr. Suter have shown it to be a young Heli- 

 costyla, probably H.fulgetrum. Gray's type has been figured by Mr. 

 E. A. Smith in the Zoology of the Voyage of H. M. S. Erebus & Ter- 

 ror, Mollusca, p. 3, pi. 1, fig. 5, under the name "Bulimus antipodum." 

 It was said to have been procured at Kaitaia, N. Z., by Dr. Dieffen- 

 bach. 



Var. NOVOSEELANDICUS (Pfr.). 



Shell imperforate, ovate-oblong, solid, irregularly rugose-striate ; 

 tawny-brown, here and there streaked with chestnut ; spire ovate- 

 conic, flesh-colored above, the apex rather acute, suture uneven, 

 widely white-margined. Whorls 6, moderately convex, the last as 

 long as the spire, somewhat attenuated basally, columella vertical, 

 scarcely twisted. 



Aperture subvertical, rhombic-semioval, bujf-whitish inside ; peri- 

 stome thickened, white % the margins joined by a whitish callus, the 

 right margin a little, expanded, slightly arcuate above, very feebly 

 sinuated within ; basal lip forming an angle with the dilated, adnate 

 columellar margin. Length 77, diam. 31, aperture 35 mill, long in- 

 side, 15 wide. (Pfr.} 



Whangaruru, Bay of Islands (Hochstetter) ; Whangarei (Suter). 



Bulimus novoseelandicus PFR., Malak. Bl. viii, p. 149 (1861); 

 Monogr. Hel. Viv. vi, p. 83. CKOSSE, Journ. de Conchyl, 1864, p. 



