SUTER : ACMJilD^ OF NEW ZEALAND. 321 



: At first sight this species would seem to be a young A. pileopsis, 

 but there are some points which separate the two. First of all 

 A. cantharus never attains a larger size than that indicated above ; 

 the radial sculpture is visible only under a good lens — that is why 

 Keeve called it smooth, and which it really is to the naked eye. If 

 exceptionally a few ribs are present they are much farther apart than 

 those of A. pileopsis. The apex is much sharper and more hooked, 

 also much more constant in its anterior position. The inside between 

 'marginal band and spatula is really light blue, not whitish or bluish- 

 white as in A. pileopsis. It lives like most other species on rocks 

 between tide-marks, and I have never seen it high up where only the 

 spray of the sea could reach it. Type in the British Museum. 



9. AcMJ2A Campbelli (Filhol), PI. XXVII, Figs. 19-21. 

 'Patella Camphelli, Filhol: Comptes Kendus, vol. xci, 1880, p. 1095; 



Mission de I'ile Campbell, 1885, p. 530; Hutton, Proc. Lmn. 



Soc. I^.S. Wales, vol. ix, 1884, p. 373. 



Shell small, roundish-oval, conical, subpellucid, finely ribbed, pink. 



The radiate riblets are very numerous and close together, about 40 



reach from apex to margin, and about 20 are interstitial riblets ; they 



fjare broadly convex and crossed by numerous very fine concentric 



; growth-lines. The colour is uniformly pink. Apex small, rounded, 



situated at about the anterior third of the length; anterior slope 



straight, posterior slope very little convex. Inside pinkish - white, 



with white radiating rays corresponding to the riblets ; spatula pink, 



margin crenulate, with a narrow pink border. 



Length 5, breadth 5, height 3 mm. Type. 



,, 5-75, ,, 4-75, ,, 3 ,, Auckland Islands. 

 The dentition is shown in Fig. 21 ; it does not differ much from that 

 of the other species of this group. 



Hah. — The type was collected by the late Professor Filhol at the 

 ; entrance to the north-east bay of Campbell Island. My specimen is 

 from the Auckland Islands, and was collected by Captain J. Bollons. 



This shell, quite insufficiently described by Filhol and never figured, 

 has been more or less of a puzzle to Now Zealand conchologists for 

 a considerable time, and I am most grateful to Captain Bollons for 

 having brought a specimen with the animal. The species seems to be 

 rare or easily overlooked, as I have never seen it before amongst 

 material collected at the subantarctic islands of New Zealand. Type 

 in Mus. Hist. Nat., Paris. 



10. ACM^A PAUVICONOIDEA, u.u. PI. XXVII, Figs. 22-25. 

 Acmcca conoidea, Q. & G. : Hutton, Trans. N. Zeal. Inst., vol. xv, 



1882 (1883), p. 132; Proc. Linn. Soc. N.S.Wales, voL ix, 



p. 373 ; Index Faunae Nov. Zeal., p. 85, not of Quoy & Gaimard. 



Shell small, thin, highly conical to depressed, eonoidal, oval, with 



very fine radiate striae and irregular brown bands. Good specimens 



show indistinct and very low radiate riblets, corresponding to the 



brown lines, and under a strong lens fine and close radiate threads can 



