GEOLOGY AND PALEONTOLOGY OP THE CANAL ZONE. 583 



information on Central American between Mexico and Panama, nor 

 is there any on northern South America. 



H. Douville ] has referred tho "couches de San Fernando" of 

 Trinidad to what he designates "Chattien et Tongrion" or "Stampien 

 supericur." Tho spocios of Foraminifora occurring at this horizon, 

 according to Douville, are Nummuliies cf. N. vascus, Lepidocyclina 

 (Isolepidina)- pustulosa, L. (isolepidina) "du type ogival," L. (Eu- 

 lepidina) formosa, L. (Eulepidina) cf. L. dilatata. The species in 

 Panama that would represent about tho same horizon, according to 

 my interpretation , aro Lepidocyclina panamensis and L. muliiplicaia, 

 stations 65S6e and G5S7 (see page 555). L. panamensis, it should bo 

 stated, may range upward into the Emperador limestone, but this 

 is not certain. 



Tho cvidance for Barbados is not altogether decisive. Franks and 

 Harrison 3 present the following classification of the Barbadian for- 

 mations: 



(Low-level reefs. 

 High-level reefs. 

 Globigerina-m&xls. 

 Break. 



Miocene Oceanic series. 



Break. 

 .Eocene or Oligocene Scotland beds. 



Tho Glolrigerina-marls aro referred to in the section on page 544 

 of tho paper cited, as tho Bissex Hill "beds." The only comment 

 I will here make on this section is that it seems to me phj^sically 

 impossible to have a fringing reef conformably built on Globigerina 

 ooze deposited in water 1,000 fathoms deep. 



After bringing to bear on tho problem of tho age of tho Scotland 

 beds the information accumulated by P. J. L. Guppy, Harrison and 

 Jukes-Browne, and others, as well as that obtained through his own 

 studios, Gregory says: 4 "It is therefore advisable at present to cor- 

 relate tho whole of the beds in Barbados below the Oceanic Series 

 with the San Fernando or Naparima marls of Trinidad. Guppy has 

 recently referred these (and the lower part, at least, of the Scotland 

 beds, goes with them) to the Eocene. They are, however, now gen- 

 erally assigned to tho Oligocene, as, for example, by Heilprin." 



A preceding paragraph of this paper contains Douville's correlation 

 of the "couches do San Fernando" of Trinidad, with the "Stampien 



i Les Orbitoides do l'lle de la Trinity Comptcs. Rend., vol. 116, pp. 87-92, 1915. 



s This subgencric name is invalid, Tor it is proposed for Lepidocyclina manlilli, which is the type-species 

 of Lepidocyclina. The name should be written Lepidocyclina {Lepidocyclina) pustulosa or [Lepidocyclina] 

 Lepidocyclina pustulosa. 



» Franks, G. F., and Harrison, J. B., The Globigerina-nmrls [and basal reof-rocks] of Barbados, with an 

 appendix on the Foraminifera by F. Chapman, Gcol. Soc. London Quart. Journ. vol. 54, pp. 540-555, 

 1S98. 



* Gregory, J. w., Contributions to tho paleontology and physical geology of the West Indies, GeoL 

 Soc. London Quart. Journ., vol. 51, pp. 255-310, pi. 11, 1S95. 



