200 cushman: byram cai^careous marl 



marl of Mayesville, South Carolina. It is unknown from the 

 Tertiary of Europe but is a typical species in recent seas 

 in the shallow water of the tropical and subtropical waters of the 

 Pacific and Indian Oceans. 



Discorhis sp. A peculiar species of Discorhis found at Byram is 

 interesting not only because it is undescribed but because of its 

 relationships to other species. It is probably nearest in its 

 affinities to D. corrugata Millett, described from the Malay 

 Archipelago and recorded by Heron- Allen and Earland from the 

 Kerimba Archipelago off the southeastern coast of Africa; 

 from the coast of Burmah; and from West Australia, thus giving 

 it a wide Indo-Pacific range. In the characters of the ventral 

 surface it is also related to D. patelliformis H. B. Brady and D. 

 tabernacularis H. B. Brady, both of which are typical Indo- 

 Pacific species. This is, then, a representative of a group now 

 living in the shallow water of the Indo-Pacific. 



Hauerina fragilissima H. B. Brady. All the known records 

 for this species are Indo-Pacific. Brady's records are: Off 

 Tahiti, Society Islands; off Kandavu, Fiji Islands; and the 

 northern and southern coasts of New Guinea. Millett records 

 it from the Malay Archipelago, and Heron-Allen and Earland 

 from the Kerimba Archipelago off the southeastern coast of 

 Africa. I have recorded it off the Hawaiian Islands. There 

 are a number of very typical specimens from the marl at Byram 

 showing again close relations of the Byram fauna with that of 

 the Indo-Pacific. 



Truncatulina sp. This shows another relation of the fauna 

 from Byram. It is a species with peculiar lobed chambers 

 related to two other species I recently described from the Miocene 

 of South Carolina and Florida. 



Truncatulina americana Cushman. This species is known 

 from the Miocene of the Coastal Plain ; from the upper Oligocene 

 of the Culebra formation of the Panama Canal Zone; and ap- 

 pears at least in a modified form in the Byram marl. 



Lepidocydina super a Conrad. This is the largest species of 

 the Byram marl and may be taken as the index fossil as far as the 



