FORAMINIFERA OF THE ATLANTIC OCEAN 



139 



Test attached, the early stage close coiled, when detached showing 

 the early chambers of the dorsal side, the aperture extending to the 

 periphery, in a later stage forming a low cone with the inner ends of 

 the chamber fused in a spiral and the aperture running from this 

 groove to the periphery, in the adult the chambers form a spiral 

 extending upward from the plane of attachment, and become inflated, 

 the aperture terminal and semicircular with a rounded lip; sutures 

 becoming somewhat limbate; wall coarsely perforate. 



Length up to 1.68 mm.; diameter of adult chambers 0.75 mm. 



Wallich's types came from off the South of Greenland, 108 to 1,205 

 fathoms. Brady records it from "13 Porcupine stations and one 

 Challenger station in the North Atlantic- — the latter oft" the Azores 

 being the most southerly — the depth ranging from 5 fathoms on the 

 Rockall Bank to 1,360 fathoms. Poor exam-ples have been met with 

 in dredgings from off the Cape of Good Hope, 150 fathoms, north of 

 the Falkland Islands, 1,035 fathoms, and in the South Pacific, near 

 Juan Fernandez, 1,375 fathoms. Schlumberger's specimens were 

 from the Bay of Biscay." Egger records it from oft" the Cape Verde 

 Islands; from oft ^est Africa; off Mauritius and off Western Australia. 

 Goes records it from off Scandinavia and in the Pacific off Acapulco, 

 Mexico, 772 fathoms. Flint's Albatross stations arc D2530 off the 

 Eastern Coast of the United States, and D2383 Gulf of Mexico, 

 depths 956 and 1,181 fathoms. Kiaer's specimens were from off 

 Christiansund, 911 meters and Vesteraalseggen, 1,187 fathoms, single 

 specimens at each station. I have recorded it from the North Pacific, 

 and have material from the Porcupine dredgings in the Atlantic. 



As a fossil, it has been recorded from the Late Tertiary of the Bis- 

 marck Archipelago by Schubert, and from Lomita Quarry, southern 

 California by GaUoway and Wissler. UhUg's record from the " Altter- 

 tiar" of the West Galician Carpathians is another species. 



Ruperlia stabilis — Material examined 



