276 Tran sac tions . — Zoology. 



(3.) Physa cumingi, H. Ad., inhabits Australia. 



(4.) Physa tvilsoni, Tryon, inhabits Australia ; perhaps 

 pyramidata, Sow. 



(5.) Physa nov&seelandia? , Clessin = P. lessoni, E. A. Smith, 

 Australia. 



Ahi XVII. — Some New Species of New Zealand Marine Shells, 

 together with Remarks on some Non-marim Specie-: and. some 

 Additions to the " Index Faunce." 



By Rev. W. H. Webster, B.A. 



[Bead before the Auckland Institute, 27'/' February, 1905.] 

 Plat s IX. and X. 



New Species op New Zealand Marine Shells. 

 Turbo (Lunella) radina (= delicate), n. sp. Fig. 1, a, b. 



Shell flat-topped, whorls 3h, of which the slightly depressed, 

 white, smooth protoconeh claims H, the next half-whorl, which is 

 slightly rounded, is pale-green, the last is pale-brown. In the 

 neanic stage the sharply angled periphery shows small white pro- 

 jections increasing in size until each assumes the form of a blunt 

 hollow spine, having a dark-grey patch in front of it. The upper 

 surface of the body-whorl slopes sinuously to the keeled periphery, 

 below which are two similar but less developed keels ; a single 

 but obscure keel surrounds the deep umbilicus. The entire shell 

 is irregularly but closely radiately striate, the stripe on the upper 

 surface sloping backward. Suture well marked, aperture not 

 continuous, circular, interior iridescent with a white margin 

 inside the aperture. Columella vertical, curved, white, margin 

 reflexed, outer lip thin. Height, lh mm. ; breadth, 2J mm. 

 The operculum is characteristic. 



Hob. Takapuna. 



Type in my collection. 



The colour and size of this shell agree with that of half a 

 dozen specimens in my collection, also with a living specimen 

 found at Whangarei by Mr. C. Cooper. 



Astralium pyramidale, n. sp. Fig. 2, a. 



Shell a pyramid with straight sides, brown above, marbled 

 with green on the base ; protoconeh obscured by coralline growth, 

 whorls 4, Hat in outline but heavily ribbed, the body-whorl 

 having twelve ribs which slope forwards from the suture towards 

 the periphery and are crossed almost at right angles by numerous 



