36 PERMIAN FOSSILS. 
GORGONIA INFUNDIBULIFORMIS, Goldf. Op. cit., Germ. Trans., p. 459, 1832; and 3d 
English Edition, p. 572, 1833. 
—  antiqua, Goldf. Op. cit., Germ. Trans., p. 459, 1832; and 3d English 
Edition, p. 572, 1833. 
Rerepora FLUsTRACEA, Phillips. Encyce. Metr., vol. vi, p. 615, pl. iii, fig. 8, 1834. 
GORGONIA INFUNDIBULIFORMIS, Goldf. Phillips, Op. cit. 
— antiqua, Goldf. Phillips, Op. cit. 
— INFUNDIBULIFORMIS, Goldf. Bronn, Lethea Geogn. p. 47, pl. v, fig. 
1} Gh O5 UGS. < 
— RETIFORMIS, Sch/. Quenstedt, Wiegmann’s Archiv, p. 89, 1835. 
RETEPORA FLUSTRACEA, Phillips. Thomson, Min. Geol., vol. ii, p. 294, 1836. 
o= = ns Phillips, Lardner’s Cycl. Geology, vol.i, p. 190, 1837. 
GORGONIA RETIFORMIS, Schl. Morris, Catalogue, p. 38, 1843. 
— — »,  Geinitz, Geea von Sachsen, p. 98, 1843. 
— ANTIQUA 65 Ofds Wllis 
FENESTELLA ANTIQUA, ,, Bull. Soc. Géol. Fr., 2° série, vol. i, p. 24, 1844. 
— FLUSTRACEA, Phillips. Idem. 
— INFUNDIBULIFORMIS, Goldf. Idem. 
— RETIFORMIS, Schl. Idem. 
Last rour Synonyms. Geol. Russ., vol. i, p. 221, 1845. 
FENESTELLA FLUSTRACEA, Phillips. Tennant, Strat. List, p. 88, 1847. 
— RETIFORMIS, Schl. King, Catalogue, p. 6, 1848. 
— FLUSTRACEA, Phillips. Howse, T. N. F. C., vol. i, p. 261, 1848. 
— antTiaua, Goldf. Idem. 
— RETIFORMIS, Sch/. Idem. 
= == » Geinitz, Versteiner., p. 17, pl. vii, figs. 11-13, 1848. 
—_ ANTIQUA », Geinitz, Op. cit. 
Diagnosis —Fronds or foliations variously folded, more or less convoluted, and 
generally funnel-shaped. Stems or ribs slender, more or less bifurcating. Ce/lules 
small, bi-serially arranged; the series separated from each other by a narrow tu- 
berculated ridge. Connecting processes slender, and generally short. d/eshes more or 
less oval. Von-celluliferous surface marked with fine straight longitudinal strize. Both 
surfaces of the stems minutely foraminated.* 
Fenestella retiformis is a variable Coral; and, in consequence, some have been led 
to divide it into two or more species ; but I feel satisfied, from examining a large suite 
of specimens, that the observed differences are not sufficiently persistent to be 
considered as specific, being due merely to difference of age or incidental causes. 
The stems or ribs, in the young state, show the dividing ridge slightly prominent ; 
when more advanced, it is strongly raised and tuberculated. These and another 
modification, all of which are occasionally displayed on one specimen, are represented 
in Plate II, figs. 9, 10, and 12. In dwarfed specimens the stems are oftener divided 
1 The following is the diagnosis given by Goldfuss: ‘‘Gorgonia undulata, infundibuliformis, subtilissime 
reticulata, ramulis teretibus, cortice crassiuscula osculis creberrimis tuberculata.”’ (Petrefacta Germanie, 
vol. i, p. 99.) 
