ART. 14 FORAMINIFEEA FROM TEINIDAD CUSHMAK AND JARVIS 35 



NODOSARIA BREVITESTA Franke 



Plate 10, Figtjbb 11 



Kodosaria hrevifesta Franke, Abh. i^eol. pal. Inst. Univ. Greifswakl, vol. 6, 

 p. 42, pi. 3, fis. 37, 1925. — Cushman and Jarvis, Coiitr. Cusliman Lab. 

 Foram. Res., vol. 4, p. 97, pi. 13, fig. 10, 1928. 



Franke figures from the Cretaceous of Germany a specimen which 

 seems close to our figured one from Trinidad. It is a short, stout 

 form with a very few remote costae continuous over the sutures. 

 No further material has been available to check the earlier notes 

 on this species. 



NODOSARIA VELASCOENSIS Cushman 



Plate 11, Figures 1-4 



Nodo.^aria fontannesi (Berthelin var. vclascocrisis Cushman, Bull. Amer. 



Assoc. Petr. Geol., vol. 10, p. 594, pi. 18 fig, 12, 1926. 

 Xodosaria velascoensis Cushman and Jarvis, Contr. Cushman Lab. Foram. Res„ 



vol. 4, p. 97, pi. 13, figs. 15, 16, 1928. 



Test elongate, subcylindrical, very slightly tapering, greatest width 

 developed by the last-formed chamber, consisting of numerous cham- 

 bers increasing in height as added, the last ones somewhat longer 

 than broad, circular in transverse section; sutures only slightly de- 

 pressed, ornamentation consisting of very fine longitudinal costae 

 which in the early portion may be continuous, but over most of the 

 test are restricted to the areas over the sutures. Length, up to 2.5; 

 breadth, 0.3-0.4 mm. 



This form was originally described from the Velasco shale of Mex- 

 ico, where it was fairly common. It is also common in the Trinidad 

 material and shows a considerable degree of variation, especially in 

 the ornamentation of the test. The costae are usually somewhat spi- 

 rally arranged, especially in the early portion, and in later chambers 

 are often restricted to the area immediately adjoining the sutures. 



NODOSARIA ASPERA Reusg 



Plate 11, Figure 5 



Nodosaria aspera Rexjss, Verstein. Bohm. Kreide, pt. 1, p. 26, pi. 13, figs. 14, 

 15, 1845-46. 



Test somewhat elongate, tapering toward the initial end, greatest 

 breadth at the last-formed chamber; chambers increasing rather 

 uniformly as added, slightly involute, subglobular; sutures distinct, 

 but only slightly depressed ; wall ornamented with small, closely set 

 spines covering the entire surface; aperture with a long, cylindrical 

 neck projecting well out beyond the outline of the test. Length, 

 up to 1.6; breadth, 0.5-0.55 mm. 



