116 Annals of the South African Museum. 



Dimensions of a specimen from Chatham Island : Long. 74 ; 

 lat. 4-5; apert. 4-5x2-8; last whorl 6'3 mm. 

 unknown. 



Hob. NEW ZEALAND. Massacre Bay (Filhol) ; Auckland (Cheese- 

 man) ; Banks Peninsula; Lyall Bay; Otago, alive on coast above 

 high water (Iredale) ; Chatham Island (in coll. Connolly). 



MARINULA XANTHOSTOMA, H. & A. Adams. 



1821 ?? Pedipes ovulus, Fer., Tabl. Syst. iii. p. 109 (or 113). D. 

 1832 ?? Melampus patalus, Lowe, Zool. Journ. v. 19. p. 289. D. 



1854 Marinula xanthostoma, Ads., P.Z.S. p. 35. D. 



cymbaeformis, Reel., Ads., P.Z.S. p. 35 (without 

 characters). 



1855 Cremnobates solida, Swainson, Pap. & Proc. Roy. Soc. V.D. 



Land, iii. 1. p. 44. PL VII, f. 2. D.F. 



1856 Marinula patula, Lowe (== ovulus? and xanthostoma}, Pfr. 



Mon. Auric, p. 62. D. 

 cymbaeformis, Becl., Pfr., Mon Auric, p. 63. D. 



1857 Cat. Auric, p. 47. D. 

 ,, patula, Lowe, Pfr., Cat. Auric, p. 46. D. 



1867 ,, xanthostoma, Ads., Angas, P.Z.S. p. 231. N. 



1901 ,, patula, Lowe ( =pellucida, xanthostoma, and solida}, 



Tate & May, Proc. Linn. Soc. N.S.W. 

 xxvi. p. 419. L. 



,, ,, ( = cymbaeformis), Hedley, Proc. Linn. 



Soc. N.S. W.xxvi. p. 704. PI. XXXIV, 

 f. 18. N.F. 



Before describing the shell, careful attention must be paid to the 

 synonymy. 



Ferussac's diagnosis of Pedipes ovulus runs: "More elongated 

 than afra, smooth and polished, and has not the internal rib on 

 the external border of the aperture. Hab. ? ' 



This might equally refer to a Phytia or Marinula, but it seems 

 doubtful whence Ferussac could have obtained an example of the 

 latter genus. The Type of ovulus is not forthcoming, and in its 

 absence the name is obviously worthless. 

 I do not think that patula can stand. 



It has been impossible to trace the Type or a single authentic 

 example of Lowe's species, which was unfigured and insufficiently 

 described ; but the following facts throw grave doubt on its being an 

 Australian shell : 



