ART. 3 SOUTH AMERICAN FORAMINIFERA — CUSHMAN AND PARKER 17 



It is a characteristic West Indian species, and some of the Brazilian 

 specimens reach a size nearly as great as that of those specimens 

 found off the Tortngas, Fla., the type locality. The last chambers 

 have the aperture terminal and show a tendency toward becoming 

 imiserial, characters that place this species in the genus Loxostom/wm. 



Genus SIPHOGENERINA Schlumberger, 1883 



SIPHOGENERINA cf. RAPHANUS (Parker and Jones) 



Plate 3, Figures 25, 26 



Siphogenerina cf. raphanus Cushman, U. S. Nat. Mus. Bull. 104, pt. 4, p. 174, 

 1923. 



The Atlantic material of this species is never so well developed as 

 is that form found in the Indo-Pacific. Forms assigned to this 

 species occur rarely in the West Indian region, and there are a few 

 specimens from all three of the stations in Rio de Janeiro Harbor. 

 The aperture is always large, and there is no definite neck produced 

 as in the Indo-Pacific form. The costae are limited to the early 

 portion of the test as a rule and are not so well developed as in the 

 typical form. 



Genus ANGULOGERINA Cushman, 1927 



ANGULOGERINA OCCIDENTALIS (Cushman) 



Umfferina angulosa Cushman (not Williamson), Carnegie Inst. Washington 



Publ. 311, p. 34, pi. 5, figs. 3, 4, 1922. 

 TJvigerina occidentalis Cushman, U. S. Nat. Mus. Bull. 104, pt. 4, p. 169, 1923. 

 Angulogerina occidentalis (Cushman), Florida State Geol. Surv. Bull. 4, p. 50, 



pi. 9, figs. 8, 9, 1930. 



Test minute, elongate, triangular in transverse section, the periph- 

 ery somewhat lobulate; chambers distinct, those of the last-formed 

 portion becoming more distinct and remote; sutures distinct and 

 depressed; wall ornamented with longitudinal costae on all but the 

 last-formed chambers in the adult; apertural end drawn out into a 

 short tubular neck and slight phialine lip. 



This species is known from the Miocene of the Florida region, 

 and also is living in the general West Indian area. Our material 

 shows it to be present at all three of the stations in Rio de Janeiro 

 Harbor, but its range does not extend to the collections made to the 

 southward. 



