Plate 62. \^ELASCO CHILOGUEMBELINA AND GLOBIGERINA 



(All figures: a, spiral view; b, umbilical view; c, edge view; ail )< 110) 



Figure 1. Chiloguembelina crinita (Glaessner) 



Side view of hypotype (USNM P5890), show- 

 ing fiaring test, spinose upper surface and as}-m- 

 metrical aperture. 

 FiGLTRE 2. Globigerina inaequispira Subbotina 



Hypotype (USNM PS881), showing globular 

 chambers, tripartite test as seen in umbilical 

 view, and spinose surface. 

 Fk;i;res 3, 4. Globigerina triloculinoides Plummcr 



3, Lectotype, here designated, of Globigerina 

 velascoensis var. compressa White (not G. com- 

 pressa Plummer), Columbia Univ. No. 19882, 



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showing this species to be identical with G. tri- 

 loculinoides Plummer of the Texas Midway 

 group. 4, Hypotype (USNM P5883), showing 

 characteristic pitted surface. 

 Fkiures 5-7. Globigerina mckannai White 



5, 6, Hypotypes (USNM PS884a,b), showing 

 variation in size, inflated test with wide umbili- 

 cus, and relatively numerous chambers per whorl. 

 7, Lectotype, here designated, of G. mckannai 

 (Columbia Univ. No. 19878) in which the um- 

 bilical region is partially obscured by extraneous 

 material. 



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