84 



UNITED STATES NATIONAL MUSEXJM BITLLETIN 215 



28 \y 29 ^30 \y 31 V/ 3'* \/ ^ 



Figure 14. — Variability of species of Chiloguimbelina (all figures approximately X 120; a list of the sample localities is given on p. 



Numbers 1-4. Chiloguembelina crinita (Gkessner), (USNM PS7S4) 



from sample 228674. 

 Numbers 5-8. Chiloguemhelina cubinsis (Palmer), (USNM PS7S7), 



from sample 215702. 

 Numbers 9-11, 14-18, 20-23. Chiloguembelina martini (Pijpers): 



9-11 (USNM P5760a-c), from sample 177760, Hantkenina aragon- 



ensis zone. 14-18 (USNM PS761a-«) from sample 221009, Porti- 



culasphaera mexicana zone. 20-23 (USNM P5762a-d), from 



sample 238622, Globigtrapsis semiinvoluta zone. 

 Numbers 12, 13, 19. Chiloguembelina cf. mauriciana Howe and 



Roberts : 



12, 13 (USNM P5765a, b), from sample 177760, Hantkenina 



aragonensis zone. 19 (USNM P5766), from sample 221009, 



Porticulasphaera mexicana zone. 

 Numbers 24-27. Chiloguembelina midwayensis midwayensis (Cushman) 



(USNM PS769a-d), from sample 232705. 

 Numbers 28-31. Chiloguembelina midwayensis strombiformis Beckmann, 



new subspecies (USNM P5772 a-d) from sample 228674. 

 Numbers 32-35. Chiloguembelina midwayensis subcylindrica Beckmann, 



new subspecies (USNM P5776a-d), from sample 228484. 



