Zooruyra. | _ DEVONIAN RADIATA. 67 
phragms, and radiating lamellze. The concentric lamine are close and distinct in some states of preservation, 
but more usually obsolete ; there are in many specimens the usual larger broad concentric variously coloured 
bands seen commonly in this genus, which will not of course be confounded with the laminz above referred to. 
Position and Locality—Common in the Devonian limestone of Newton Bushel. 
STROMATOPORA (Caunopora) RAMOSA (Brass. Sp.) 
Ref. and Syn.—Favosites ramosa (Brass.) Caunopora ramosa (Phill.) Pal. Foss. t. 8. f. 22. 
Sp. Oh.—Corallum forming long, cylindrical, dichotomous branches, averaging three lines in diameter, 
each traversed by a distinct, open, central, tubular channel, one-third to one-half a line in diameter, sur- 
rounded by obscurely concentrie layers of small vesicular tissue, formed of very numerous, thick, vermicular 
plates (abruptly flexuous, at short distances), of a granulo-porous structure, radiating obliquely upwards and 
outwards, from the large central channel to the surface, where the openings are small, distant in pro- 
portion to their diameter, (about six or seven in the space of one line); sections in all directions, 
shewing a nearly similar close vermicular reticulation. 
This remarkable species is easily distinguished by its large central channel running down each branch, 
but the external reticulate structure is precisely identical in size and other characters with that of the 
Stromatopora polymorpha, bearing out my view of these fossils being generically similar; in some of the 
branches I have noticed towards the edge a few irregular vermicular, or regular straight channels, slightly 
smaller than the central one, and indications in some of the decomposing slate specimens of the central 
channel becoming irregular, excentric, and obsolete after a distance, giving way to a new central one. 
Position and Locality.—Not uncommon in the red and grey Devonian limestones of Teignmouth. 
STROMATOPORA (Caunopora) VERTICILLATA (M°Coy). Fig. a and b, page 66. 
Ref.—M‘Coy, Ann, Nat. Hist. 2nd Series, Vol. VI. p. 377. 
Sp. Ch.—Corallum forming slender cylindrical, vermiform branches, one to two lines in diameter, each 
with a distinct central canal, one-fourth to one-third of a line in diameter; surrounding sclerenchyme, 
nearly solid, traversed by verticillate whorls of simple, nearly straight canals, averaging about one-third the 
diameter of the central channel in most of their length, extending obliquely upwards and outwards, from 
the inner channel, (whose walls they perforate with regular quincuncially arranged pores) to the surface, 
where they form slightly elongate quincuncially arranged pores, four in the space of one line, separated by 
solid interspaces thicker than their diameter. 
This species, by its narrow cylindrical branches and distinct central channel, resembles the C. ramosa 
(Brass. sp.) but instead of having a minute vermicular, sub-equal, reticulated structure, the general tissue 
is nearly solid, and regularly traversed from the centre to the surface, by large oblique, nearly straight, 
verticillate canaliculi, giving a plumose appearance to the longitudinal section. 
Position and Locality——Not uncommon in some parts of the Devonian limestone of Teignmouth. 
Explanation of figures—Page 66, a. Two branches, natural size, each shewing the surface near one end, 
and a section in the rest of the length shewing the central canal and whorls of yerticillate tubuli. 4, portions of 
surface, and horizontal and vertical sections of ditto, magnified. 
Genus. PALAOPORA (M‘Coy). See page 14. 
PALHOPORA PYRIFORMIS (Blainv. and G'uett. Sp.) 
Syn. and Ref.—Astrea porosa (Gold.) Pet. Germ. t. 21. f.7. Heliopora pyriformis (Blain.) Porites pyri- 
Jormis (Lonsd.) in Geol. Trans. (not in Sil. Syst.)—id. Phill. Pal. Foss. (not in Mem. Geol. Surv.) 
Sp. Ch.—Corallum amorphous, tuberose, composed of obscurely defined concentric layers, average diameter 
of circular tubes rather more than two-thirds of a line, and rather more than their diameter (rarely once 
and a half) apart; walls thin, distinct, lamellar crenulations short; horizontal diaphragms irregular, 
K 2 
