Xenophortt.] GASTROPODA. 279 



Dimensions of shells from near Cuvier Island, without the ag- 

 glutinated shells : Diameter, 68 mm. ; height, 35 mm. : diameter. 

 70 mm. ; height, 58 mm. 



Dentition (Suter, T.N.Z.I.. xl, 346, fig. in text). Central tooth 

 oval, with a strong median and 4 small cusps on each side ; lateral 

 teeth sharply pointed on the inner upper side. 



Type in the British Museum. 



flab. Hauraki Gulf, in deep water ; near Tiri Tiri Island, in about- 

 20 fathoms ; ten miles west of Cuvier Island, in 32 fathoms (Captain 

 Bollons) ; near Little Barrier Island, in rather shallow water (Mr. 

 Shakespear, jun.) ; off the Bay of Islands, in about 50 fathoms. 

 Indian Ocean. Japan. 



Remarks. Two specimens, habitat unknown, are in the Dominion 

 Museum. The New Zealand shell is neither A', conchyliophom, as 

 suggested by von Martens, nor A', pallidula, as it was named by the 

 late Captain Hutton ; it also is not a new species, as assumed by 

 myself. Captain Bollons presented a specimen to the Australian 

 Museum. Sydney, and on the 13th July, 1909, Mr. C. Hedley wrote 

 to me, " Judging by Fischer (Coq. Vivantes, Trochus, pi. viii). the 

 shell Captain Bollons sent me seems to be Xcnophora corrugata, Reeve." 

 This is undoubtedly correct. Captain Bollons had meanwhile kindly 

 given me a young specimen of our Xcnophora, and this shows the 

 spiral ribs upon the base remarkably well. The absence of this sculp- 

 ture in the two adult shells I have induced me to consider them to 

 be a new species. The shells attached are usually Cliione mesodesma 

 and C. Stutchburyi. 



Fossil in the Miocene and Pliocene. 



Fam. CAPULID.E, Fleming. 



Animal with a distinct head and lengthened muzzle ; eyes near the 

 external base of the tentacles ; only one branchial plume is developed ; 

 a tongue-shaped projection between snout and foot. 



Shell limpet-like, with a more or less spiral apex ; interior simple, 

 with a horseshoe-shaped muscular impression. 



They are inhabitants of most seas, and date, back to the Silurian. 



KEY TO GENERA. 



A. Shell conical, with an inclined recurved apex . . CAPULUS. 



B. Shell flattish, with a not recurved apex . . . . . . NEOJANACTJS. 



Genus 1. CAPULUS, Montfort, 1810. 



Capulus (pars), Montfort, Conch. Syst., ii, 1810, 55. Type: Patella mi- 

 garica, L. Galerita, Brongniarcl, 1808 ; not of Fabricius, 1801. Amal- 

 thea fi, Schumacher, 1817 ; not Aialtheus, Montfort, 1810. Cabochon, 

 Lamarck, 1812. Pilcopsis (pars), Lamarck, 1822. Actita, Fischer de 

 Waldhcim, 1825. 



Animal with lengthened rostrum ; tentacles subulate, with the 

 eyes at their outer bases ; mantle-margin fringed ; foot suborbicular, 



