OXYSTYLA, ANTILLES, FLORIDA. 109 



duced into Jamaica by the agency of man. Against this view is the 

 strong individuality of the Jamaican race. I am informed by Pro- 

 fessor Cockerell that materials which have been traced to flood-debris 

 of the Orinoco, are commonly cast upon the southern coast of Jamaica 

 near Kingston. I would suggest from this circumstance that 0. un- 

 data may have been carried from Trinidad to Jamaica sealed to the 

 projecting limb of a floating tree. If so, the Floridian and Bahama 

 colonies are possibly traceable to similar flood waifs. 



" It is very common in the neighborhood of Kingston, Jamaica, 

 but seems confined to that area, and may be seen clinging in hun- 

 dreds to the prickly-pear plants bordering the roads. I have not met 

 with it in any other part of that island. In 1889 I brought a small 

 basket full of them from Jamaica to Barbados ; but being on arrival 

 placed in quarantine, on Pelican Island, I turned them out there on 

 the bushes. Subsequently I found them in limited numbers already 

 introduced to gardens in the suburbs of Bridgetown." ( Col. H. W. 

 Feilden.} 



Var. RESES (Say). PI. 27, figs. 24, 25, 26. 



Form ventricose ; thin and light, less solid than the Jamaican or 

 Trinidad races. White or slightly brown-tinted, this tint deepening 

 near the lip or behind the later varices ; stripes few, purplish brown, 

 running with the growth-lines, and mingled with streaks of the same 

 or a bright rust color, the stripes and the streaks often interrupted 

 between the bands, and mostly not extending below the lower one ; 

 varices rather numerous, usually 3 or 4 on the last whorl; three spiral 

 bands strongly indicated ; apex black or chestnut. Aperture large, 

 showing the varices, bands and streaks vividly inside; columella 

 straightened above ; parietal callus chestnut with pale sigmoid streaks, 

 and no white area around the axis. 



Alt. 52, diam. 31, longest axis of aperture 31 mill. (Sugar Loaf 

 Key.) 



Alt. 46, diam. 30, longest axis of aperture 27-| mill. (Sugar Loaf 

 Key.) 



Sugar Loaf Key, Florida (F. E. Blanes) ; Key West (Rugel, 

 Simpson). 



Bidimus reses SAY, New Harmony Disseminator, Dec. 28, 1831 

 (as synonym of B. undatus}\ Say's reprint, p. 25; Binney's reprint, 

 Complete AVritings of Thomas Say, p. 39. 



