FOSSIL FORAMINIFERA FROM THE WEST INDIES. 65 



Lepidocyclina undulata, new species. 

 (Plate 3, Figures la, 2, 8, 9; Plate 15, Figure 5.) 



The following is a description of this species : 



Test of large size, slightly papillate, lenticular, the umbonate region scarcely 

 if at all raised, whole test undulate or saddle-shaped, often bent nearly double. 



Vertical sections of this species show pillars very constant but of small 

 diameter scattered throughout the central half of the test and a few toward 

 the peripheral portion; equatorial chambers fairly high and with a series of 

 6 to 8 rather large perforations in the peripheral wall of each; lateral chambers 

 thick-walled and rather large, comparatively few, usually not more than 6 in 

 a vertical column. 



Diameter in the largest specimens apparently exceeding 100 mm. when 

 complete. 



Type specimen (U. S. N. M. No. 328197) from Antigua, Leeward 

 Islands, U. S. G. S. No. 6863, High Point, collected by T. W Vaughan. 

 Specimens are abundant at this station. Other material from Antigua 

 apparently referable to this species is from No. 6858, Wetherell Point ; 

 6874, Blizzard's Mill; (?) 6880, west side Otto's estate, west side of 

 Golden Grove road; 6881, from bluffs on north side of Willoughby 

 Bay; and 6942, bowlders on south side of Monk's Hill, Falmouth. 



This seems to be the largest known species of Lepidocyclina, being 

 larger than L. elephantina. The material here figured (plate 3, figs. 

 1, 2; plate 14, fig. 5) from 6869 and 6881 are for the most part com- 

 posed of other species, but a few large specimens apparently referable 

 to this are shown with the others. 



Lepidocyclina undosa, new species. 



(Plate 2, Figure 1, a.) 



The following is a description of this species; 



I^OO'f' r\T YYI cn'i m 1-Yi c<i r7* W^n rt ri />rf~vW"fc < v\TVicioifH"^ o^- f^xr^rrlTT T 



Test of medium size, much compressed, strongly undulate or saddle-shaped, 

 not at all umbonate, thin throughout, surface slightly granulate, otherwise 

 smooth, where worn usually netted by the walls of the chambers. 



Vertical section showing apparently an entire absence of pillars throughout, 

 equatorial chambers nearly square in section, walls straight, lateral chambers 

 very numerous, low and broad, very thin-walled, 12 to 15 in a vertical column 

 in the thicker portions of the test. 



Horizontal sections showing typical hexagonal equatorial chambers. 



Diameter up to 25 mm. or more. 



Type material (U. S. N. M. No. 328198) from Antigua, Leeward 

 Islands, U. S. G. S. No. 6869, Long Island, Antigua. The species is 

 very abundant in this material, making up a large proportion of the 

 rock-mass. Specimens are associated with Heterostegina. 



This may be distinguished from other species of Lepidocyclina by 

 its saddle-shaped test, the flat, non-umbonate center, the finely netted 

 surface in worn specimens, and the absence of pillars in the vertical 

 section with the thin-walled chambers. 



