Plate 21. CHILOGUEMBELINA, ZEAUVIGERINA, GUEMBELITRIA 



(All figures X122; a list of the sample localities is given on p. 88) 



Page 



Figures la, b. Chiloguevibelina midwayensis mid- 90 

 wayensis (Cushman) 



la, Side view of hypotype (USNM PS768), 

 from sample 232705. lb, Edge view. 

 Figures 2a-3. Chiloguembelina midwayensis sub- 90 

 cyclindrica Beckmann, new subspecies 



2a, Side view of holotype (USNM PS 774), 

 from sample 102301. 2b, Edge view. 3, Side 

 view of paratype (USNM PS77S) from sample 

 102301, showing small end chamber. 

 Figures 4a, b. Chiloguembelina crinita (Glaessner) 89 

 4a, Side view of hypotype (USNM PS7S3a), 

 from sample 228674. 4b, Edge view. 

 Figures Sa, b. Chiloguembelina subtriangularis Beck- 91 

 mann, new species 



5a, Side view of holotype (USNM PS783), from 

 sample 232706. 5b, Side view. 

 Figures 6a-c. Chiloguembelina midwayensis strombi- 

 formis Beckmann, new subspecies 



6a, Side view of holotype (USNM P5771), 90 

 from sample 223472. 6b, Edge view. 6c, Side 

 view (opposite side to 6a). 

 Figures 7a, b. Chiloguembelina trinitatensis (Cush- 91 

 man and Renz) 



7a, Side view of hypotype (USNM PS786), 

 from sample 50315. 7b, Edge view. 

 Figures 8a, b. Chiloguembelina parallela Beckmann, 91 

 new species 



8a, Side view of holotype (USNM P5780), 

 from sample 228484. 8b, Edge view. 

 Figures 9a, b, 11. Zeauvigerina aegyptiaca Said and 92 

 Kenawy 



9a, Side view of hypotype (USNM P5803), 

 from sample 228674, specimen without terminal 

 end chamber. 9b, Edge view, showing eccentric 

 position of aperture. 11, Side view of hypotype 

 (USNM P5804) from sample 228674, a complete 

 specimen, showing end chamber with tubular neck. 

 258 



Figures 10a, b, 12a-13. Chiloguembelina wilcoxensis 92 

 (Cushman and Ponton) 



10a, Side view of hypotype (USNM P5793), 

 from sample 50315, showing the small variety 

 occurring in the lower Lizard Springs formation. 

 10b, Edge view. 12a, Side view of hypotype 

 (USNM P5794) from sample 102301, showing the 

 large variety occurring in the upper Lizard 

 Springs formation. 12b, Edge view. 13, Side 

 view of hypotype (USNM P 5795,) from sample 

 228484, showing small subterminal end chamber. 

 Figures 14a, b. Chiloguembelina viartifii (Pijpers) 89 

 14a, Side view of hypotype (USNM PS7S9), 

 from sample 221009. 14b, Edge view. 

 Figures 15a, b. Chiloguembelina cf. viauriciana 89 

 (Howe and Roberts) 



15a, Side view of hypotype (USNM P5764), 

 from sample 177760. 15b, Edge view. 

 Figure 16. Guem,belitria columbiana Howe 92 



Side view of hypotype (USNM P5801), from 

 sample 217995. 

 Figures 17a, b. Chiloguembelina cf. multicellaris 91 

 (Hussey) 



17a, Side view of hypotype (USNM P5778), 

 from sample 177760. 17b, Edge view. 

 Figures 18a, b. Chiloguembelina sp. 92 



18a, Side view of hypotype (USNM P5800), 

 from sample 178162. 18b, Edge view. 

 Figures 19a-20b. Chiloguembelina victoriana Beck- 91 

 mann, new species 



19a, Side view of holotype (USNM P5789), 

 from sample 240966. 19b, Edge view. 20a, 

 Side view of paratype (USNM P5790), from 

 sample 193785. 20b, Edge view. 

 Figure 21. Chiloguembelina cubensis (Palmer) 89 



21a, Side view of hypotype (USNM P5756), 

 from sample 193785. 21b, Edge view. 



