CASTEKOPODA. 43 



* 194. T. parmoplioroides, Quoy. Shell ovate, sub-pyriforin, 

 arched, convex, posteriorly rounded, expanded ; anteriorly sub-attenu- 

 ated, accumulated. White within, pale brown without ; radiating 

 riblets, close, rounded. (Reeve.) 



PARMOPHORUS. 



Elongato-oblong, depressed ; apex posterior ; margin siuuated in 

 front ; smooth and white. 



Red Sea. Singapore. Philippines. Australia. Cape of Good 

 Hope. 



195. P. ailStraliS, La-mark, I.e., vii., p. 579. Shell solid, sides 

 straight, margin smooth. Length, 2 ; breadth, I'l. 

 North Island and Cook Strait. 



* 196. P. unguis, Linnaeus. Shell rather short, straight, broad, 

 rather flattened, smooth, concentrically continuously striated ; sides 

 straight ; anterior margin widely truncated, very slightly siuuated ; 

 anterior area broad, smooth. (Reeve) 



Probably the same as the last. 



FAMILY TECTTJEIDJE. 



Shell conical, symmetrical ; gill single on the side of the back of 

 the neck ; teeth in six longitudinal series. 



TECTURA. 



Shell convex, apex sub-anterior ; margin even, simple. 



197. T. pileopsis, Q*K>y, I.e., iii.,p. 359; Lottia, pileopsis, Gray, 

 Dieff. N.Z., ii., p. 240. Ovate, very finely concentrically striated; 

 apex recurved, sub-marginal, margin even. Blackish brown, slightly 

 varied with white ; interior above the muscular impression brown, 

 below it bluish white ; margin black. Height, '35 ; length, - 8 ; 

 breadth, '65. 



Common. 



198. T. fragiliS, Quoy, l-c., iii., p. 351; Lottia fragilis, Gray, 

 Diejf. N.Z., ii., p. 240. Ovate, depressed, mernbranaceous, pellucid, 

 concentrically striated ; apex recurved, marginal. Green, with sub- 

 concentric brown bands ; interior with a green ring round the mus- 

 cular impression. 



FAMILY PATELLIDA 



Shell simple, conical ; apex sub-anterior ; gill lamellar, on the 

 inner surface of the mantle, forming a more or less complete ring 

 beneath the margin. 



PATELLA. 



Shell smooth or radiately striated, apex sub-central. 

 World- wide. 



199. P. inconspicua, Gray, Diejf. N.Z., ii., p. 244. Large, 

 solid, conical, rough outside, with twenty to forty radiating ribs, apex 



