B. J. L. Guppy — Rocli-horings, Trinidad. 197 



form resembling fig. 23 of pi. Ixxv of the " Challenger " Eeport. 

 Brady says it is essentially a coral-reef foraminifer, but the conditions 

 of the Sangregrande deposit would not admit of coral-reefs. Our form 

 may be said to be indicative of shallow water, and a depth of 10 to 

 60 fathoms woi;ld probably suit it best. A very few specimens of 

 the long form have occurred to me in the Naparima oceanic beds, and 

 I think that this long form belongs to deep water-. 



Brady (" Challenger " Report, p. 580) admits that the term Sagrina 

 is not required. 



UVIGERINA CANAKIENSIS, Orb. 



Length about 0-6 mm. Specimens sometimes slightly costate. 



POLYMORPHINA LANCEOLATA, ReUSS. 



A few very minute examples for which the above name may stand 

 until fuller information is obtained. 



Globigerina bulloides, Orb. 

 The forms found at Sangregrande resemble most the Vienna Basin 

 specimens, and do not attain the great development in number, size, 

 or variety that we find in the Naparima oceanic beds. 



Sph^roidina bulloides, Orb. 



Not very common. 

 Planorbulina (Discorbina) elegans, Orb. (PL IX, Fig. 15.) 



Diameter about 05 mm. This agrees fairly well with the figure 

 of D'Orbigny's Modele No. 42 given by Parker & Jones, but not 

 quite as well with the figure given by Goes (Carib. Rhiz., pi. viii, 

 figs. 269-71), which is B. complanata. Orb. It suggested itself to 

 me as a small and delicate modification of Planorbulina Wullerstorfi, 

 a common and well-developed foraminifer in the oceanic beds of 

 Naparima, 



It has been proposed to dispense with the genus Anomalina, and 

 to include the species classed under that name, together with those 

 comprised under Truncatulina, in the genus Planorbulina. In my 

 lists no species from the oceanic beds appears under the name 

 of Planorbulina, but some five species are recorded under that of 

 Anomalina. PI. larvata, a remai'kable form, is recorded from the 

 shallow-water beds, and I have since found it in the Ditrupa-hed of 

 Pointapier. 



Planorbulina ungeriana, Orb. 



One or two small specimens of this species occur. 



Pulvinulina elegans. Orb. (PL IX, Fig. 16.) 



Specimens few and small ; the largest was 1 mm. in diameter. 

 This species as a fossil can always be distinguished by its coloration, 

 its white septal bands, marginal rings, and umbilical boss, contrasting 

 with the chocolate-brown interspaces. The Sangregrande specimens 

 are perhaps referable to the var. partschiana. 



