RECENT FORAMINIFERA FRO^^I OFF JUAN FERNANDEZ 



ISLANDS 



By Joseph A. Cushman and R. T. D. Wickenden 



Of the Cushman Laboratory for F oraminiferal 

 Research, Sharon, Mass. 



During his cruise about South America, Dr. Waldo Schmitt col- 

 lected foraminifera from a number of interesting localities. Among 

 these is a collection of material taken by means of a "bull-dog" 

 snapper from shallow water 10-20 fathoms, in Cumberland Bay, Juan 

 Fernandez Island, Chile. This represents a region very little known 

 as far as the foraminifera are concerned. Since d'Orbigny's classic 

 memoir published in 1839 ^ almost no records are known from the 

 west coast of South America or adjacent islands. The Challenger 

 cruised in this region and the Albatross made a trip about South 

 America on which a few samples were collected, but these have not 

 been worked up for their contained foraminifera. The Challenger 

 dredged in the vicinity of Juan Fernandez but only in very deep 

 water so that the records have little in common with this shallow- 

 water material. 



The fauna is interesting on account of its association with other 

 regions. Some of the species are evidently East Indian or Australian 

 in their relationship, such as Spirillina spinigera, Patellina advena, 

 Tretomphalus huUoides, etc. Others seem to be more closely related 

 to colder water faunas such as are known from the west coast of 

 North and South America represented by such species as Gaudryina 

 triangularis, Sigmoidella (Sigmoidina) pacijica, Elphidium articularia, 

 Bulimina patagonica, Angulogerina carinata, and others. There 

 are a few representatives of pelagic species such as Glohigerina 

 conglomerata, G. infiata, G. triloba, Globorotalia menardii, and G. 

 truncatidinoides. 



Some of the species are represented by too few specimens to allow 

 a full description and identification. Some of these are, however, of 

 sufficient interest so that figures are here given for future reference. 

 Several of the species have proved to be new. The figures on the 



' Voy. Amfir. Mfirid., 1839, Foraminiferes. 



No. 2780.— Proceedings U. S. National Museum, Vol. 75« Art. 9. 



27136—29 1 



