NO. 10 AMERICAN SPECIES OF LEPIDOCYCLINA — VAUGHAN 3 



These names are given below. Those inckided in the three sum- 

 maries above mentioned are followed jjy appropriate date references. 

 For those not included in one of the three summaries, there are foot- 

 note references. The key locality of each species is also given. The 

 species are as follows : 



Lepidocyclina (Polylepidina) chiapasensis Vaughan (1924), Isthmus of Te- 

 huantepec 

 adkinst Vaughan (1924), Isthmus of Tehuantepec 

 protciformis Vaughan (1924). Mecapala Hills, 

 Tantoyuca, Vera Cruz 

 (Pliolepidina) duplicata Cushman (1920) and 



Vaughan (1924), Rio Vinazco, Chi- 

 contepec, Vera Cruz 

 (Lep^idocycHna) trinitatis H. Douville (1924), Isthmus of Te- 

 huantepec and Rio Vinazco,^ Chicontepec, 

 Vera Cruz 

 macdcnmldi Cushman (1920), Rio Pantepec, 



Buena Vista Hacienda, Puebla 

 astcrodisca Nuttall,^ Alazan shale 

 (Nephrolepidina) undosa Cushman (1920), Meson formation, 

 Vera Cruz 

 var. tumida Vaughan,^ Meson forma- 

 tion. Vera Cruz 

 gigas var. mexicana Cushman (1920), Meson formation, Vera 

 Cruz 



I have published additional details on Polylepidina in the article 

 cited below," and I have discussed the distribution of L. trinitatis and 

 L. fnacdoimldi in another article.^ 



H. Douville has published a few notes on the Tertiary orbitoids of 

 Mexico, especially on those from the Meson formation,' and com- 



^The specimens from Rio Vinazco identified as L. trinitatis are similar to 

 specimens from Venezuela and Trinidad described by Mrs. Helen K. Hodson 

 as L. hiibbardi (Bull. Amer. Pal., vol. 12, p. 21, pi. 5, figs, i, 7, \?, 1926). I am 

 inclined to consider this form a variant of L. trinitatis, but others may prefer a 

 separate name for it. 



^ Nuttall, W. L. F., Lower Oligocene foraminifera from Mexico. Journ. Pal., 

 vol. 6, p. 34, pi. 7, figs. 5, 8; pi. 9, fig. 10, 1932. 



^ Vaughan, T. W., Species of Lepidocyclina and Carpenteria from the Cayman 

 Islands. Quart. Journ. Geol. Soc. London, vol. 82, p. 395, pi. 24, figs. 3-5, 1926. 



* Vaughan, T. W., Studies of orbitoidal foraminifera : the subgenus Poly- 

 lepidiim of Lepidocyclina and Orbit ocyclina, a new genus. Proc. Nat. Acad. Sci., 

 vol. 15, pp. 288-295, I pi., 1929. 



^ Vaughan, T. W., Species of larger arenaceous and orbitoidal foraminifera 

 from the Tertiary deposits of Jamaica. Journ. Pal., vol. i, pp. 277-298, pis. 43- 

 50, 1928. 



® Douville, H., Les Orbitoides de la region petrolifere du Mexique. Soc. Geol. 

 France, C. R. seance, Feb. 21, 1927, pp. 34-35, 1927. 



