rORAMINIFERA OF THE ATLANTIC OCEAN. 



Ehrcnbergiiin trigo7ia, var. hraziliensis — material examined. 



137 



EHRENBERGINA PUPA (d'Orbigny). 



Cussiduliua pui>a d'Orbigny, Foram. Am^r. Merid., 1839, p. 57, pi. 7, figs. 21-23. 

 Ehrenhergina 'pupa H. B. Brady, Rep. Voy. Challenger, Zoology, vol. 9, 1884, p. 

 433. pi. 55, tigs, lo, h: pi. 113, figs. lOfl-c. 



Descripilon. — ^Test subtriangular. ])roader at the apertural end, 

 bluntly pointed at the initial end, composed of comparatively few 

 cliambers. on the dorsal side smooth and rounded, the ventral side 

 with a slight longitudinal depression; chambers inflated, distinct, 

 wall fairly thin, finely punctate, smooth; sutures distinct, depressed, 

 especially on the ventral side, not forming either spines or ridges; 

 aperture elongate, curved, nearly at right angles to the edge of the 

 chamber; color white. 



Length 0.3o mm. 



Distribution. — D'Orbigny originally described this species from the 

 Falkland Islands; Brady in the Challenger Report records it from off 

 the Azores. 450 fathoms (823 meters); off the mouth of the Rio de la 

 Plata, 13 fathoms (23 meters), and off the Falkland Islands in 1,035 

 fathoms (1,895 meters). Pearcey records tlia species from Scotia 

 station 342 in 1,946 fathoms (3,559 meters), 56° 54' S.. 56° 24' W. 

 Additional records elsewhere are off the coast of Chile, 120 and 175 

 fathoms (220 and 320 meters), dredged by the Challenger, and two 

 records given b}' Chapman, one from the muds of the shores of the 

 Ross Sea, the other off Funafuti, in 1,050 fathoms (1,920 meters). 

 This then is evidently a species of southern waters, coming north 

 into the central Atlantic at the Azores, if this more or less isolated 

 record is correct. 



I have failed to find the species at all in the Albatrosa luaterial or 

 other material from the (yaribbeau, (lulf of Mexico, or the eastern 

 coast of the United States. 



53568—22- 



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