ART. 14 FORAMINIFEEA FROM TRINIDAD CUSHMAN AND JABVIS 5 



fragmentary specimens represent the arms of some such form, but 

 until complete specimens are obtained it may be left under Rhab- 

 dmnmhia. 



Family SACCAMMINIDAE 



Subfamily Saccammininae 



Genus SACCAMMINA M. Sars, 1869 



SACCAMMINA RHUMBLERI (Franke) (?) 



Plate 1, Piguke 3 



There are smooth specimens of a globular shape such as are figured 

 here, the position of which is more or less questionable. In their 

 general characters they resemble specimens that Franke has referred 

 to as " Orbulmaria rhumbleH.'''' These specimens of ours seem to 

 belong to the genus Saccamviima^ but otherwise they are very close 

 to the German ones. 



Subfamily Pelosininae 



Genus PELOSINA H. B. Brady, 1879 



PELOSINA COMPLANATA Franke 



Plate 1, Figures 4-6 



Pelosina complanafa Franke, Jahrb. kon. Preuss. Geol. Landes., vol. 32, pt. 2. 



p. 107, pi. 3, figs, la, b, 1911; Abb. Preuss. Geol. Landes., vol. Ill, p. 10, 



pi. 1, fig. 6, 1928. 

 Saocatnmina scruposum White (not Hai)Jophragmium scruposum Berthelin), 



Journ. Pal., vol. 2, p. 183, pi. 27, fig. 5, 1928. 

 Test free, single, invariably crushed to a lenticular shape; wall 

 replaced by amorphous silica, rough; aperture single, round, with 

 short neck. 



There are abundant specimens, especially in the Hobson clay from 

 the Cretaceous of Trinidad, similar to those figured. They vary 

 considerably in the coarseness of the material of the test, but this 

 character is a common one in the general arenaceous group. Speci- 

 mens have a definite protuberant neck with a circular aperture. The 

 specimens are always collaj)sed, and the center is usually occupied 

 by a depressed area. They seem to be identical with the specimens 

 described and figured by Franke under the above name. They are 

 apparently identical with the specimens referred to by White under 

 the above reference. There is a possibility that these represent the 

 megalospheric form of the species referred to further on in this 

 paper as Hormosina glolmllfera. In Recent material of that species 

 megalospheric forms are often found with a single large chamber 

 and usually in considerable abundance. These specimens, therefore, 

 are placed here with considerable doubt as to their true position. 



