Fossil Corals and the Devonian Species. — Co/fin. Ill 
Cyathophylhim undulaturn et multiplicatum Owen. Report on Min- 
eral Lands, 1814, p. 69. Plate xrn, Fig. 10. 
Plasmopora astraformis Owen. 
Porites ? astraformis Owen. Report on Mineral Lands, 1841, plate 
xiii, Fig. 8. 
Plasmopora follis Edwards and Haime. Foss. de Terr. Pal., p. 220. 
Plasmopora follis Rominger. Mich. Foss. Corals, p. 11. Plate in. 
Fig. 2. 
Plasmopora follis Davis. Kentucky Foss. Corals, Plate i, Figs. 9, 10. 
Lyellia glabra Owen. 
Sarcimda (porites?) glabra Owen, Report on Mineral Lands, 1814, 
Plate xiii, Fig. 11. 
Sarcimda costata Ooldfuss Owen, Report on Mineral Lands, 1811, 
Plate xiv, Fig. 12. 
Lyellia americana Edwards and Haime, Mon. Pol. Foss. Terr. Pal., 
p. 226. 
Lyellia americana Rominger, Mich. Foss. Corals, p. 15, Plate n, 
Figs. 1, 2. 
Lyellia americana Davis, Kentucky Foss. Corals, Plate in, Fig. 2. 
Strombocles gigas Owen. 
Plate V, Fig. 5. 
Astrea ? gigas Owen, Report on Mineral Lands, 1844, p. 70, Plate 
xiv, Fig. 7. Not Phillipsastrea gigas Owen, of Billings and subsequent 
authors. 
Phillipsastrea billingsi Calvin. 
Plate VI, Figs. 1, 2. 
Phillipsastrea gigas Owen, Billings, Canadian Journal, 1859, p. 128. 
Incorrectly identified with Strombodes gigas Owen, {Astrea? gigas 
Owen.) 
Phillipsastrea gigas (?) Owen, Rominger, Mich. Foss. Corals, p, 129, 
Plate xxxvu. 
Phillipsastrea gigas Nicholson, Pal. Ontario, 1875, p. 77. 
Phillipsastrea gigas Nicholson, Pal. of Ohio, Vol. n, p. 241. 
Phillipsastrea gigas Davis, Kentucky Foss. Corals, Plate 118, Figs 1, 2. 
This species may be thus described : 
Coralla growing in irregular, hemispherical or lenticular 
masses varying from a few inches to more than two feet in 
diameter and covered on lower side with a wrinkled epitheca. 
Corallites irregularly polyglonal, the larger two inches or even 
more in diameter, intimately united throughout their entire 
length, not bounded by definite outer wall. Calyces shallow 
with well defined central pit. Septa in each corallite from 
forty-five to sixty in number, thin, more or less confluent with 
