Plate 3. HANTKENINIDAE : HASTIGERININAE, CASSIGERINELLINAE 



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 Figures l-3b. Hastigerina murrayi Thomson 29 



1, 2, Hypotypes (BMNH ZF1S62), mounted 

 in balsam, were living specimens from tow net 

 of the Challenger, and show the extremely 

 elongate and delicate spines present in life. The 

 protoplasm is also preserved within the shell, 

 but the chamber arrangement can be seen. 

 1, Edge view; 2, side view of different specimens. 

 3, Dead shell of this species, from dredgings in 

 the South Atlantic, showing how spines have been 

 broken. 3a, Side view (BMNH ZF1563), 

 showing planispiral test. 3b, Edge view, 

 showing broad equatorial arched aperture. From 

 the Recent of the South Atlantic. X 50. 

 Figures 4a, b. Hastigerina aequilateralis (Brady) 29 

 4a, Side view of topotype (USNM P3918) of 

 the species designated as type for Glohigerinella 

 240 



Cushman, showing the planispiral test and large 



equatorial aperture. 4b, Edge view. From 



the Recent of the Pacific. X 70. 

 Figures 5a, b. Clavigerinella akersi Bolli, Loeblich, 30 

 and Tappan, new genus, new species 



5a, Side view of holotype (USNM P4S50), 



showing early spherical chambers and later 



clavate ones, and broad lateral apertural flanges. 



5b, Edge view, showing high arched aperture. 



From the Eocene Navet formation of Trinidad, 



B.W.I. X 65. 

 Figures 6a-c. Cassigerinella boudecensis Pokorny 30 

 6a, b, Opposite sides of topotype (USNM 



P3389) with arched aperture visible in fig. 6b. 



6c, Edge view, showing biserial enrolled test 



and arched aperture. From the middle Oligo- 



cene of Czechoslovakia. X 300. 



