. The Annals and magazine of natural history; zoology, botany, and geology. Natural history; Zoology; Botany; Geology. Mr. F. M'Coy on some new genera and species of This uiagniticent species is the only true As&cea I have yet seen from the palseozoic rocks, the numerous corals of this age described under this generic title by British and foreign authors belonging for the most part to the family Cyathophyllidce^ often *? xy septate in the middle and having solid polygonal xcional walls to the stars—characters completely at variance with those of the recent and mesozoic Astrceae, and i
. The Annals and magazine of natural history; zoology, botany, and geology. Natural history; Zoology; Botany; Geology. Mr. F. M'Coy on some new genera and species of This uiagniticent species is the only true As&cea I have yet seen from the palseozoic rocks, the numerous corals of this age described under this generic title by British and foreign authors belonging for the most part to the family Cyathophyllidce^ often *? xy septate in the middle and having solid polygonal xcional walls to the stars—characters completely at variance with those of the recent and mesozoic Astrceae, and indicating important differences in the animals and mode of increase. Abundant in some parts of the carboniferous limestone near Bakevvell, Derbyshire; more rare in the same fonnation at Corwen. [Col. University of Cambridge.) Heterophyllia (M'Coy), n. g. Gen. Char. Stem elongate, subcylindrical, irregularly fluted lon- gitudinally : horizontal section, few, _ distant lamellEe destitute of any order of arrangement, but irregularly branching and coalescing in their passage from the thin solid external walls towards some indefinite point near the centre, where the few main lamellcie irregularly anastomose : ver- tical section showing about the middle an irregularly flexuous line (the edge of one or two of the radiating vertical lamellae), from which on each side a row of thin, distant, sigmoidally „ , , „. • ^ curved plates extends obhquely up- stem; b. horizontal and wards and outwards, forming a row of vertical section, large rhomboidal cells on each side. The paradoxical characters of the lamellae—their perfect want of symmetry of disposition, and their irregular branch-like union among themselves, together with the remarkable openness of the cellular structure, render those corals totally unlike any other recent or fossil group. From Cladocora and Caryopjhyllia, to which they are most allied, they are distinguished by the want of the cellular axis, and by their few,
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