58 



GEOLOGY AND PALEONTOLOGY OF THE WEST INDIES. 



representing the ends of the small pillars; surface often uneven, due to the 

 raised peripheral walls of the lateral chambers. 



Vertical section shows the general shape, thin, gently curving from the 

 center to the periphery, slightly curved; the pillars numerous and compara- 

 tively small, a very few larger pillars in the central region, vertical columns 

 of lateral chambers with numerous low, flattened chambers making up each 

 column. 



Horizontal section shows hexagonal chambers, but more numerous equa- 

 torial ones with the outer wall convexly curved, walls rather thick. 



Diameter 25 to 35 mm. 



Lemoine and Douville regard this as a mutation of L. dilatata. They 

 record this species, especially from Spain at four localities in Anda- 

 lusia, at Baena, and Pont du Guadalquiver (Puente Viejo), and at 

 Sella and Penaguila, province of Alicante, stages not given. It was 

 collected by O. E. Meinzer in Cuba at the following stations: 7512, 

 Ocujal; 7518, south side near west end, Los Melones Mountain; 7522, 

 Mogote Peak; 7543, limestone outcrop, east side of Yateras; and by 

 N. H. Darton at 7664, north slope of La Piedra, northeast of Jamaica, 

 northeast of Guantanamo. 



Lepidocyclina parvula, new species. 

 (Plate 3, Figures 4 to 7.) 

 The following is a description of this species : 



TPp«+. lpnf.ir>n1s»r rnrmilar r».pnf.r».l rporinn f.Viinlrpnprl 



Test lenticular, circular, central region thickened, gradually diminishing in 

 breadth toward the periphery, which has a thin flange-like border, surface 

 fairly smooth. 



Vertical section showing the general form of the species; equatorial chambers 

 gradually increasing in size toward the periphery, where they may be 4 to 5 

 times as high as long; outer surface slightly convex, chambers of the central 

 region in section nearly square; lateral chambers 8 to 10 in a vertical column 

 in the central region, and thence gradually diminishing in number until near 

 the periphery there may be but a single layer of the lateral chambers, central 

 portion with definite pillars, largely confined to this region. 



Horizontal section shows the usual form of the equatorial chambers for this 

 genus, the embryonic chambers either subequal or with one slightty larger 

 than the other. In the section illustrated on plate 3, figure 4, a peculiar con- 

 dition of these chambers is shown, where the two embryonic chambers have 

 a series of chambers, apparently coiled about them. This is an unusual char- 

 acter in this genus. 



Diameter 5 mm. 



Type specimen (U. S. N. M. No. 328191) from U. S. G. S. station 

 6862, from lower bed at Hodge's Bluff, Antigua, T. W. Vaughan, 

 collector. It is very abundant in material from certain layers at this 

 locality. This species also occurs at station 6854, Rifle Butts, Antigua. 



