Plate 64. \'ELASCO GLOBOROTALIA 



(All figures: a, spiral sitlc; b, umbilical side; C, edge; all X 110) 



Page 

 Figures 1, 2. Glohorotalia velascoensis (Cushman) 196 

 Hypotypes (USNM PS871a,b), showing the 

 extremely ornate test, with raised and beaded 

 sutures and keel on the spiral side, and angular 

 and everted, keeled and beaded umbilical shoulder 

 and wide open umbilicus on the umbilical side. 

 Figure 3. Cloborotalia occlusa Loeblich and Tappan, 191 

 new species 



Holotype (USNM P5874), showing few cham- 

 bers per whorl, small umbilicus and angular 

 but not keeled or everted umbilical shoulder. 



Figure 4. Ciloborotalia arqua Cushman and Renz 



Hypotype (USNM P5894), showing small test, 

 flat spiral side and elevated umbilical side, few 

 chambers per whorl and relatively large final 

 chamber. 



Figlire 5. Cloborotalia angulata (\\ hite) 



Hypotype (USNM P5891), showing angular 

 truncate chambers, depressed sutures, acutely 

 angled periphery and more sharply angled um- 

 bilical shoulder. 



301 



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187 



