1894.] FOBAMIKIFEJIA FKOM TRINIDAD. 651 



and E. ellijisoides) may turn out to be only extreme variations of 

 one species. E. subnodosa and E. exponens are found in the Tertiary 

 Microzoic rocks of Naparima in Trinidad ; and, as already stated, 

 E. exjjonens is found in the oceanic deposits of Barbados. Brady 

 truly remarks that it is more than probable that specimens 

 belonging to the group may have been mistaken for forms of 

 Laf/ena, Glandidiaa, and Nodosaria. I add that Ellipsoidina may 

 be found to bear a somewhat similar relation to Pleurostomella that 

 Glandulina does to JSodosaria. 



4. rEONDICTTLABIA EtABELLIFORMIS, n. Sp. (Plate XLI. figS. 5, 6.) 



Test fan-shaped, widening rather rapidly, sometimes with an- 

 gular projecting ends to the segments. The aperture is a narrow 

 (linear) fissure between thickened everted and plaited or corrugated 

 lips. The form delineated in fig. 6 is stouter and of more even 

 outline, the ends of the segments not projecting. Some examples 

 (not figured) have the ends of the segments very decidedly 

 projecting. 



This is wonderfully like FavoHina Jlahelliformis, which occurs 

 with it in the Microzoic rocks of Naparima, Trinidad; so much so 

 that at first I confounded the two, and sent specimens of the 

 Frondicidaria to the British Museum (Natural History) under the 

 name of the Pavonina. But the aperture distinguishes it easily ; 

 and when once recognized there is no likelihood of one being 

 mistaken for the other. 



5. Gafdei'ina PAEiATfA, u. sp. (Plate XLI. figs. 21, 22.) 



A Gaudryina of somewhat angular sectional contour. The 

 triserial initial portion is triangular, the test afterwards taking on 

 the biserial Textularian form. The test is roughened by minute 

 sand-grains. 



This species is very much smaller than the dimensions usually 

 attained by other members of the genus, e. g. G. jjupoides ; and 

 the other Poraminifera found in the same deposits are with certain 

 exceptions also of small size. It is from the Ditrupa-beA. of 

 Pointapier, Trinidad. 



6. Gaudetina lobata, n. sp. (Plate XLI. fig. 20.) 



Test elongate, somewhat compressed, tapering, subarcuate, the 

 chambers projecting in the form of lobulated segments. Aperture 

 large, surrounded by a raised lip. 



The nearest relation of this species is probably G. haccata, 

 Schwager ; but its segments are prominent and distinct. It also 

 recalls Bolivina lobata. Brady. It occurs in the Microzoic rocks 

 of Naparima, Trinidad. 



7. Gon^atosphjEEa peolata, nov. gen. et sp. (Plate XLI. 

 figs. 14-19.) 



Test a many-chambered somewhat prolate sphseroid, the initial 

 end generally of rather smaller diameter than the other. Chambers 



