NO. lO AMERICAN SPECIES OF LEPIDOCYCLINA — VAUGHAN 2>7 



Comparison of figures i, 2, and 3 shows that they represent the 

 same species. There is obviously variation in the relative development 

 of pillars and surface papillae. 



Locality and geologic occurrence. — North slope of La Piedra, 

 northeast of Jamaica, northeast of Guantanamo. Cuba, collected by 

 N. H. Darton. Oligocene. 



LEPIDOCYCLINA (EULEPIDINA) sp. cf. L. DILATATA (Micht) Giimbel 



Plate 26, fig. 4; plate 27, figs. 5, 6; plate 28, figs, i, la 



1925. Enlepidina dilatata H. Douville, Revis. Lepidocyclina, p. 71, pi. 4, figs. 1-4; 

 pi. 5, figs. 1-4 (with synonymy). 



Since the illustrations here presented show the various features 

 of the specimens here compared with L. dilatata, a detailed description 

 seems unnecessary. The test is undulate, at least 16 mm in diameter, 

 slightly umbonate, and as much as 2.7 mm thick through the center. 

 The surface is reticulate-scrobiculate with fine papillae, which are 

 particularly well shown on plate 27, figure 5, over the embryonic 

 chambers. 



The relative length of the equatorial chambers as compared with 

 their height is striking, the length of many chambers being from 

 1.5 times to twice the height. Another feature of the equatorial layer 

 is its uniform thickness, there being little or no increase in thickness 

 toward the periphery. 



These specimens were identified by Cushman as L. schlumhergeri 

 Lemoine and R. Douville, which is placed by H. Douville in the 

 synonymy of L. dilatata. The vertical section of the embryonic cham- 

 bers resembles the section of L. elephantina figured by Lemoine and 

 R. Douville, but L. dilatata is smaller and it possesses distinct, but 

 small, pillars. 



Locality and geologic horizon. — North slope of La Piedra, north- 

 east of Jamaica, northeast of Guantanamo, Cuba, U.S.G.S. locality no. 

 7664, collected by N. H. Darton. Oligocene, probably upper. 



LEPIDOCYCLINA (EULEPIDINA) FAVOSA Cushman 



Plate 17, figs. 1-3; plate 18, figs. 1-4; plate 19, figs. 1-4; plate 20, figs. 1-3; 

 plate 21, figs. I, 3, 4 (probably) ; plate 29, fig. 4 



1919. Lepidocyclina favosa Cushman, Carnegie Inst. Washington Publ. 291, 

 p. 66, pi. 3, figs. lb, 2; pi. 15, fig. 4. 



1919. Lepidocyclina crassata Cushman, idem, pp. 61, 62, pi. 11, figs. 4, 5. 



1920. Lepidocyclina chattahoochecnsis Cushman, U.S. Geol. Surv. Prof. Pap. 



125, p. 65, pi. 23, figs. 1-4; pi. 24, figs. I, 2. 



