STUDIES IK FOBAMINXFERA 



85 



Figure IS. — Variability of species of Chiloguembelina and Zeauvigtrina (all 



given on p. 88^ 



ures approximately X 120; a list of the sample localities is 



Numbers 36-38. Chiloguembelina parallela Beckmann, new species 



(USNM P5781a-c), from sample 232994. Small end chamber 



visible in Nos. 36 and 38 (partly broken). 

 Numbers 39-42. Chiloguembelina subtriangularis Beckmann, new 



species (USNM PS784a-d), from sample 232706. 

 Numbers 43-45. Chiloguembelina trinitaiensis (Cushman and Renz) 



(USNM PS787a-c), from sample 50315. 

 Numbers 46-48. Chiloguembelina victoriana Beckmann, new species 



(USNM PS791a-c), from sample 193785. 



Numbers 49-58. Chiloguembelina wilcoxensis (Cushman and Ponton): 

 49-52 (USNM P5796a-d), from sample 223473, Globorotalia 

 pseudomenardii zone. 53-55 (USNM P5797a-c), from sample 

 223470, Globorotalia velajcoenjis zone. 56-58 (USNM P5798a-c), 

 from sample 102301, Globorotalia formosa formosa zone. Small 

 subterminal end chamber visible in No. 56. 



Numbers 59-62. Zeauvigerina aegyptiaca Said and Kenawy (USNM 

 P5805a-d), from sample 228674. Small end chamber visible in 

 Nos. 59-61, partly broken in Nos. 59 and 61. 



