12 PROCEEDINGS OF THE NATIONAL MUSEUM vol.75 



This small, scalelike species has been recorded from the region of 

 Samoa and possibly is widely distributed in the South Pacific. The 

 types are from the Lower Oligocene of the Coastal plain of the 

 United States. 



It is a species which has much finer divisions than the Atlantic 

 species P. corrugata Williamson. 



Family CYMBALOPORETTIDAE 



Genus TRETOMPHALUS Moebius, 1880 



TRETOMPHALUS BULLOIDES (d'Orbigny) 



Plate 5, figures 2-4 



Rotalina htdloides d'Orbigny, in De la Sagra, Hist. Fis. Pol. Nat. Cuba, 1S39, 



"Foraminiferes," p. 104, pi. 3, figs. 2-5. 

 Cymbalopora bulloides Carpenter, Parker, and Jones, Introd. Foram, 1862, 



p. 216.— H. B. Brady, Rep. Voy. Challenger, Zoology, vol. 9, 1884, p. 638, 



pi. 102, figs. 7-12, text figs. 20 a-c. 

 Tretomphalus bulloides Moebius, Beitr. Meeresfauna Insel Mauritius, 1880, 



p. 98, pi. 10, figs. 6-9. — Cushman, Publ. 311, Carnegie Inst. Washington, 



1922, p. 42, text figs 2, 3; Publ. 342, 1924, p. 36, pi. 11, figs. 1-3. 



Test free, subgiobular, early chambers rotaliform, numerous, rather 

 coarsely perforate, forming a cap to which is attached a large final 

 " balloon-chamber," subspherical, with coarse perforations on the ven- 

 tral side and within, a "float-chamber" with a single opening at the 

 base from which a tubular neck projects inward; color of the early 

 chambers dark brown, the last chamber colorless. 



Diameter 0.30 mm.; height 0.35 mm. 



Figure 4 shows the adult, and figures 2 a-c the early stage some- 

 what similar to Discorhis. 



Family CASSIDULINIDAE 



Genus CASSIDULINA d'Orbigny, 1826 



CASSroULINA CRASSA d'Orbigny 



Plate 5, figures 5 a-c 



Cassidulina crassa d'Orbigny, Voy. Amer. M<§rid., 1839, vol. 5, pt. 5, 

 "Foraminiferes," p. 56, pi. 7, figs. 18-20. 



There are a few specimens of this species which d'Orbigny described 

 in his South American monograph. 



Family GLOBIGERINIDAE 



Genus GLOBIGERINA d'Orbigny, 1826 



GLOBIGERINA CONGLOMERATA Schwager 



Plate 5, figures 6 a-c 



Globigerina conglomerata Schwager, Novara Exped., Geol. Tlieil., pt. 2, 

 1866, p. 255, pi. 7, fig. 113. — Cushman, Bull. Scripps Inst. Oceanography, 

 Tech. Ser., vol. 1, 1927, p. 172. 



