- 270 - 



iDut more x)lump and orbicular." ( iJall, IQOo). 



'■J^ype looaJit^.- Bowden, Jamaica. 



Remarks .- iY^t small valves of this species are alDundant 

 in the Aldrich collection but much lesy numerous in the Duerden col- 

 lection, -^'he largest valve has the following- dimensions: la.t. 

 5.5 mm.; alt. S.5 mm.; diam. 1.5 ram. -^all has noted tr.at this 

 form was labelled "V. ornata d'Orbign;-" (1) in '^upp^'s collection; 



(l). In rie la. Safrra, Hist. Ph;,s. jJolit. et natur. de I'lle de 



Ouba, Hollusques, vol. 2, p. 292, pi. 27, figs. 39-53, 1055 

 (French ed. ) . 



that recent species has fe;"er, broader ribs and broader interspaces. 

 Aldrich (2) has described V. dalliana from the Oligocene of -^ed 

 Bluff, Mississippi; it is small' r, more compressed and with sharp- 

 er ribs. 



2cG_urr_en£e_. - lower Miocene: Bow/den befis, Bowden, Jamaica. 

 (Dall. 1905). 



(2). Nautilus, vol. 16, no. 9, p. 100, pi. 4, fi?;. 18, 1905. 



