DEVELOPMENT OF PALEOZOIC CORALS 69 
of the corallite will always disclose the two sides of the inner wall in 
the “bimural corals” (Fig. 6), which feature also is wanting in the 
Acervularia type. 
BIBLIOGRAPHY 
ACERVULARIA (Schweig) 
Edwards and Haimes, Polyp. Foss. des Terr. Palaeoz., p. 419, Pl. 9, Figs. 
4, 4a, 4b, 1851. 
Brit. Foss. Corals, 1850, p. Ixx. 
Hall, Report Geol. Surv. Ohio, 1875, Vol. II, Pt. II, p. 476. 
Nicholson, Geol. Surv. Ohio, 1875, Vol. II, Pt. Il, p. 240. 
Schweigger, Handb. der Naturg., p. 418, 1820. 
AULOPHYLLUM (E. and H.) 
Edwards and Haimes, Brit. Foss. Corals, p. \xx, 1850, Pl. 3. 
Polyp. Foss. des Terr. Palaeoz., p. 413. 
CRASPEDOPHYLLUM (Dybowsky) 
Billings, ““Diphyphyllum archiact.” Can. Jour., Vol. V. p. 260, Fig. 8. 
Nicholson, “Heliophyllum subcaespitosum,” Geol. Mag., London, 1874, 
Volsitpa ss Pins hig 0: 
Nicholson and Thomson, ‘‘Crepidophyllum,’”’ Proc. Roy. Soc. Edinburgh, 
Vol. IX, p. 149. 
Thomson, ‘“‘Crepidophyllum,” Ann. Mag. Nat Hist., p. 51, 1878. 
DIPHYPHYLLUM (Lonsdale) 
Lonsdale, Murch., Vern., Keys., Russia and the Urals, 1845, Vol. I, pp. 
623-24, PI. A, Fig. 4. 
Clarke and Ruedemann, New York State Museum Mem. V, p. 25. 
Edwards and Haimes, Polyp. Foss. des Terr. Palaeoz., p. 446. 
Thomson, J., Quarterly Journal of the Geol. Soc., 1887, p. 33. 
Hall, “‘Diplophyllum,” Pal. of New York, 1852, Vol. Il, p. 115. 
Lambe, “Can. Paleoz. Corals,’ Contributions to Canadian Paleontology, 
Vole Pts We iphans7: 
ERIDOPHYLLUM (Verneuilanum) 
Edwards and Haimes, Brit. Foss. Corals, 1850, p. 1xxi. 
Polyp. Foss. des Terr. Palaeoz., p. 424, Pl. 8, Figs. 6, 6a. 
HApsIPHYLLUM (Simpson) 
Simpson, Bull. 39, New York State Museum, Vol. VIII, p. 203, Fig. 10. 
LAccOPHYLLUM (Simpson) 
Simpson, Bull. 39, New York State Museum, Vol. VIII, p. 221, Figs. 7, 8, 9. 
PHILLIPSASTREA (D’Orbigny) 
D’Orbigny, Note sur des Poypiers fossiles, 1849, p. 2. 
Edwards and Haimes, Brit. Foss. Corals, Intr., p. xx. 
SCHOENOPHYLLUM (Simpson) 
Simpson, Bull. 39, New York State Museum, Vol. VIII, p. 214, Figs. 39, 40. 
STROMBODES (Schweig) 
Edwards and Haimes, Brit. Foss. Corals, p. 1xx. 
SYNAPTOPHYLLUM (Simpson) 
Simpson, Bull. 39, New York State Museum, Vol. VIII, p. 212, Figs. 33, 34, 
35, 36; 37. 
