26 PERMIAN FOSSILS. 
generally encircled with eight broad, pectinated, prehensile tentacles; and the digestive 
cavity is often lined with a corresponding number of vertical membranous plaits, 
subserving the same purpose as their more numerous homologues in the Actinarias. 
The only Permian Corals having any claim to be placed in this group, are those 
included in the four genera next to be described. 
Genus Calamopora, Goldfuss. 
Diagnosis —“ Stirps calcarea, e tubis prismaticis, parallelus, contiguis, diver- 
gentibus ; tubi diaphragmatibus transversis (e siphone prolifero) intersepti, et poris 
lateralibus communicantes.”! (Goldfuss.) 
This genus, of which the type is the Calamopora alveolaris, Goldf., was formed for 
certain species of Corals, including the Corallium Gothlandicum, Lin., erroneously placed 
by Lamarck in his genus Favosites, which is typified by the Wadrepora truncata of 
Esper. The tubes of all the species have their walls foraminated, and they are furnished 
interiorly with a number of transverse plates situated generally at regular distances 
from each other. 
Calamoporas existed very abundantly as individuals, though not as species, during 
the earliest organic periods ; but they do not appear to have lived subsequently to the 
Permian epoch. 
CaLaMoporA MackRoruatil, Geznitz. Plate IIL, figs. 3, 4, 5, and 6. 
(?) CaALAMoPORA sPoNnGITES, Goldfuss. Petrefacta, p. 82, 1828. 
(2) —_ os = Germ. Transl. De la Beche, Geol. Man. p. 459, 
1832; and 3d Eng. Ed. p. 572, 1833. 
(9) — — 85 Phillips, Enc. Met. vol. vi, p. 615, 1834. 
(?) TuBULICLADIA SPINIGERA, Lonsdale. De Verneuil, Bull. Soc. Géol. France, 2™° serie, 
vol. i, p. 23, 1844. 
(’) — — 3) Geol. Russ. vol. i, p. 221, 1845. 
(2?) STENOPORA — % Op. cit. vol. i, Appendix A, p. 632, pl. A, fig. 11, 
1845. 
Catamopora Mackroratl, Geimitz. Grundriss, p. 582, 1846. 
STENOPORA INDEPENDENS, King. Catalogue, p. 6, 1848. 
= crassa, Lonsdale. Howse, T. N. F. C., vol. i, p. 260, 1848. 
— Mackrorui, Geinitz. Versteinerungen, p. 17, pl. vin, fig. 10, 1848. 
Coscrnrum DUBIUM, Geinitz. Op. cit. p. 18, pl. vii, figs. 24-27, 1848. 
Diagnosis.—A branching Calamopora: with numerous slender, round or polygonal, 
transversely-wrinkled tubes, rising perpendicularly in the centre of the branches, and 
afterwards suddenly curving out to the surface. Interpolated or new tubes numerous ; 
originating on the outside of the old ones. Margin of the apertures with from five to 
eight spine-like tubercles. 
1 Petrefacta Germaniee, vol. i, p. 77. 
