U. S. NATIONAL. MUSEUM 



PROCEEDINGS, VOL. 86 PLATE 22 



1, Operculinoides muiri, new species, Alazan formation '.Huasieca of Muir), collection K. Cjevaerts no. 20'', 

 southern Miahuapam, Veracruz; 2, Camerina moodybranchensis Gravell and Hanna, Tantoyuca formation, 

 well sample, Poza Rica no. 7; 3, C. guayabaUnsis, new species, Guayabal formation (Tempoal of ver Wiebe 

 and Muir), well sample, Poza Rica no. 8: 4, C. ptllatispiroides, new species, lower part of Chicontepac forma- 

 tion, Fl Cristo Well no. 1, Veracruz; 5, 6, C. jachsoiensis Gravell and Hanna globoid, new variety, Tantoyuca 

 formation, collection W. H. Hegwein no. 1503, near Tantoyuca; 7, 8. Operculinoides palmareaUnsis, new 

 species, Alazan formation (Huasteca of Muir), Mecatepec Well no. 5, Veracruz; 9, C. jacksomnsis Gravell 

 and Hanna, Tantoyuca formation, Tantoyuca type locality, Tantoyuca-Chopopo road, Veracruz; 10-12, 

 Camerina vanderstoki (Rutten and Vermunt), Guayabal formation, near Tempoal, Veracruz, collection A. T. 

 Nolthenius no. 157. X20. 



