ii8 



Family Dimyidae. 

 Genus Dimya Rouault. 



1859. Dimya Rouault, Mém. Soc. Geol. France, (2) III, p. 470. 



1886. Dimya Fischer, P., Man. Conchyliol., p. 937. 



1898. Dimya Dali, Trans. Wagner Free Inst. Sci. Philadelphia, III, p. 764. 



Dimya was believed to be a g-enus of fossil forms only, but récent species hâve been 

 referred to it by Dall, Bartsch and Kuroda. 



The génotype is Dimya deshayesiana Rouault. 



I, Dii7iya lima Bartsch. (Plate III, figs 21, 22). 



1913. Dniiya lima Bartsch, Proc. U.S. Nat. Mus., XLV, p. 306, pis. XXVII, XX VIII, figs. 5, 6. 



I refer a single valve brought up in a trawl at St. 256 (5° 26'. 6 S., i 32° 32^.5 E., 397 mètres) 

 to Diina lima Bartsch. The "Sibogfa" valve is more ovoid than the shells fig-ured by Bartsch, 

 and the hinge area is comparatively narrower. Photographs of this valve are published on pi. III. 



