GEOLOGY AND PALEONTOLOGY OF THE CANAL ZONE. 409 



Hales Landing, Flint River, about 7 miles below Bainbridge, Ga.; 

 "silex" bed of the Tampa formation. Specimens obtained about 

 three-quarters of a mile south of the Cathedral St. John, Antigua, 

 and at station 6893, Crocus Bay, Anguilla, and one specimen from 

 hill 4 miles south of San Rafael, Tamaulipas, Mexico, are referable to 

 this variety. 



Type.— No. 324936, U.S.N.M. 



ANTIGUASTREA ELEGANS (Reuss) Vaughan. 



Plate 102, figs. 1, la. 



1874. Isastraea elegans Reuss, K. K. Akad. Wiss. Wien, Math.-Naturwiss. CI., 



Denk8chr.,vol. 33, p. 36, pi. 53, figs. 3-5. 

 1915. Isastraea elegans Fabiani, R. Univ. Padova Inst, geolog. mem., vol. 3, p. 230, 



Illustrations of and a few notes on this species are introduced for 

 purposes of comparison with Antiguastrea cellulosa. The illustra- 

 tions exhibit the calicular characters so well that a detailed descrip- 

 tion is not necessary. Specific distinction between it and A. cellu- 

 losa is exceedingly doubtful. 



Localities and geologic occurrence. — Reuss originally described 

 Isastraea elegans from Fontana della Bova di San Lorenzo, the locality 

 at which the specimen here figured was obtained. Fabiani lists it as 

 Rupelian Oligocene. 



Plesiotype. — No. 156898, U.S.N.M. ; specimen received in exchange 

 from Prof. J. Felix of the University of Leipzig. 



ANTIGUASTREA ALVEOLARIS (Catullo) Vaughan. 



1856. Astrea alveolaris Catullo, Terr. sed. sup. Venezie, p. 54, pi. 11, fig. 1. 

 1874. Phyllangia alveolaris Reuss, K. K. Akad. Wiss. Wien, Math.-Naturwiss. 



CI., Denkschr., vol. 33, p. 32, pi. 52, figs. la,,l&. 

 1868. Phyllangia alveolaris D'Achiardi, Stud, comparat. corall. terr. terz. Pie- 



monte e Alpi Veneto, p. 20. 

 1915. Phyllangia alveolaris Fabiani, R. Univ. Padova Inst, geolog. mem., vol. 3, 



p. 231. 



This coral is not a species of Phyllangia, the type-species of which is 

 Phyllangia americana Milne Edwards and Haime,* from Florida and 

 the West Indies. I dredged a particularly fine example of P. ameri- 

 cana in water between 15 and 16 fathoms deep in Rebecca Channel, 

 Florida, between Tortiigas and Rebecca Light. The columella is 

 composed of curled, flaky processes from the inner ends of the 

 principal septa. The margins of the largest septa are faintly dentate, 

 while on the septal faces there are small, sharp, distinct ridges with 

 granulations along their courses. 



Reuss's figures of an enlargement of the calices of Phyllangia 

 alveolaris represent the columella as bluntly styliform. He says 

 however, "Die rudimentare Axe besteht nur aus 1-3 ofters etwas 



1 Brit. foss. corals, Introduction, p. 44, 1850. 



