70 
V.— DESCRIPTION OF GENUS AND SPECIES. 
Genus — TRYPLASMA, Lonsdale, 1845. 
Try plasma, Lonsdale, Murchison’s Geol. Russia in Europe, 1845, T, p. G13. 
P holidopliy Hum, Lindstrom, Ofvers Vet. Akad. Forhandl., 1870, p. 925, f.n. 
» Lindstrom, Geol. Mag., 1871, YIII, p. 125, f.n. 
Acant hades, Dybowski, Mon. Zoantharia Scler. Rugosa, Pt. 1, 1873, p. 108. 
„ Meyer, Schriften Physik-Okonomis. Gesellsch. Kbnigsberg, Abth. 1, 1881, p. 100. 
Calophyllum, Schliiter (nan Dana), Verhandl. Naturhist. Vereines Preuss. Rhein. -West., 
1881, YIII (4), p. 190. 
Tholidophyllum, Lindstrom, Bihang K. Sv. Vet. Akad. Handl, 1882, VII, No. 4, p. 63. 
„ Lindstrom, Ibid., 1883, VIII, No. 9, p. 12. 
C calophyllum, F. Roemer, Letluea Pal, 1883, I, Lief. 2, p. 409. 
Cyathopedium, Schliiter, Abhandl. Geol. Specialkarte Preuss. Thuring. Staaten, 1889, VIII, 
Heft 4, p. 5 (263). 
Try plasma, Eth. fil, Rec. Geol. Survey N. S. Wales, 1890, II, Pt. I, p. 15. 
Ccelophyllum, Weissermel, Zeitsch. Deuts. Geol. Gesellsch, 1894, XLVI, Heft 3, p. 634. 
Tholidophyllum, Weissermel, Ibid., p. 638. 
Gener ic Characters {emend.) . — Coral him simple, sub-compound, or sub- 
fasciculate. Corallites turbinate, cylindro-ob-conical, or simply cylindrical. 
Epitlieca complete and concentrically lined, but not strongly developed. 
Wall always tliin primordially, subsequently thickened with stereoplasma. 
Exothecal outgrowths consist of tubular radiciform processes, listuhe, and 
“scales.” Costa) absent, but ruga) always present, although never con- 
spicuous. Bourrelets poorly developed. Septal apparatus strictly peripheral, 
of narrow, longitudinal, more or less parallel lamella), supporting free, 
upwardly-directed spines on their distal edges, and which may or may not be 
granulated laterally. Septal loculi, tiue dissepiments, and fossula absent. 
Calices where known, deep, and straight-walled within, or straight- walled 
below, and bell-mouthed above. Tabulae complete or incomplete, very 
copiously developed ; complete, extending entirely across the visceral 
chamber, and, in consequence of the brevity of the septal lamellae occupying 
the greater portion of a visceral chamber, horizontal or variously inclined, 
