2 PROCEEDINGS OF THE NATIONAL MUSEUM vol.80 



related to that of Brazil, but which has numerous species recorded 

 by d'Orbigny in 1839 from this same region, and others evidently 

 extending around Cape Horn. These are identical with species de- 

 scribed by d'Orbigny from the west coast. The faunas of the two 

 sides of South America are, however, for the most part quite different. 

 In order to avoid repetition, reference is given to the various parts 

 of United States National Museum Bulletin 104 on the Atlantic 

 foraminifera, where complete description and synonymy of the vari- 

 ous species will be found. Nearly all the species are already known 

 from earlier works, but three of the forms are here described as new. 

 In order that workers may have a visual record of the forms of this 

 region, nearly all the species are illustrated. Most of those not fig- 

 ured here, such as the species of Elfhidium^ are already figured in 

 Bulletin 104, some of them from this same material. The figures 

 are from drawings made by Miss Margaret S. Moore. The data for 

 the stations represented are as follows : 



Station 1. Ilha Paqueta, Rio de Janeiro Harbor, Brazil, August 17, 1925; tidal 

 flats. 

 2. Nictheroy, Rio de Janeiro Harbor, Brazil, August 22, 1925. 

 8. Off Ilha Govenador, Rio de Janeiro Harbor, Brazil, August 2, 1925; 

 boat dredge, 3 fathoms, muddy, shelly bottom. 

 SO. Port Stanley, Falklands, February 23, 1927; boat dredge, 1 to 2 



fathoms, mud and broken shell bottom. 

 85. Below Port Darwin, Choisel Sound, Falklands, March 2, 1927; bot- 

 tom sampler, 4 fathoms. 

 87. Ofe lower jetty. Port Howard, Falklands, March 4, 1927; bottom 



sampler, 4 fathoms. 

 95. Narrows between Port Stanley and Port William, Falklands, March 



20, 1927; bottom sampler, 3 to 4 fathoms, sandy bottom. 

 97. Port William, Falklands, March 20, 1927; oyster dredge, 8 to 10 



fathoms, weedy bottom. 

 105. Off light, north shore Port William, Falklands, April 9, 1927, oyster 

 dredge, 14 to 15 fathoms, weedy, shelly bottom. 



123. Anchorage, St. Julian, Argentina, May 6, 1927; bottom sampler. 



124. Anchorage, Puerto Deseado, Argentina, May 7, 1927 ; bottom sampler. 



Family SACCAMMINIDAE 

 Genus PROTEONINA Williamson, 1858 



PROTEONINA DIFFLUGIFORMIS (H. B. Brady) 



Plate 1, Figure 1 



Proteonina difflugiformis Cushman, U. S. Nat. Mus. Bull. 104, pt. 1, p. 48, 1918. 



The specimens of this species are very common at station 85 only, 

 in 4 fathoms, Choisel Sound, Falklands. They are typical, however, 

 and one of them is here figured. 



