200 
DESCRIPTION OF THE FOSSILS. 
M. spicularis. Ph. PI. I. fig. 40, 41, 42. Whitewell. 
Dichotomous, branches attenuated ; cells prominent, apertures oval. 
M. oculata. Ph. PL I. fig. 43 to 46. Whitewell ; Florence Court. 
Branching at right angles ; round ; cells in longitudinal (or spiral) lines, very pro- 
minent ; apertures oval, annulated (46). 
F lustra ? parallela. Ph. PI. I. fig. 47, 48. Whitewell. 
Linear ; longitudinally and deeply furrowed ; cells in the furrows, in quincunx, then- 
apertures oval, prominent ; (side furrows without cells.) It appears to have been a 
tubular or folded membrane ; the number of rows of cells varies in different specimens. 
No sign of ramification. 
Ceriopora verrucosa. Goldfuss x. 6. A species like this occurs at 
Florence Court. 
Gougonia? PI. I. fig. 65. Bolland. 
This is the only fragment which I have seen from the mountain limestone, which 
could be referred to gorgonia. 
Favosites. — This genus is found in lower scar and Yoredale lime- 
stone. It differs from calamopora by having no lateral tubules, or 
pores. 
F. capillaris. Ph. PI. II. fig. 3, 4, 5. Gordale ; Ribblehead, &c. 
Mass spheroidal ; prismatic tubes very small ; septa symmetrically arranged in the 
different tubes. 3 general appearance of the coral ; 5 the terminal cells ; 4 the section 
showing the septa and lamellae of growth. 
F. septosus Flem. PI. II. fig. 6, 7, 8. Lee, in Northumberland ; Bristol. 
Prismatic tubes larger ; interstices thin ; septa rather irregularly arranged in 
the different tubes. 6 general appearance ; 7? 8 sections shewing the septa, &c. 
Calamopora. — It is found mostly in laminar limestones, cherts, and 
shales, from the Brough limestone to the upper millstone grit. 
C. tumida. Ph. PL I. fig. 49 to 57. Harrogate; Greenhow hill; 
Brough ; Kirby Lonsdale ; Middleham ; Florence court ; Arran. 
Irregularly ramified and swollen ; formed of concentric layers of prismatic cells, 
contracted to a smaller opening at the surface. Transverse tubuli appear to stand 
on the angles 53 ; the concentric layers of cells are separated by a lamina 54 ; the 
ostiolm are seen in various states at 50, 51, 56, 57- It appears that this variety 
depends on the covering of the surface, a. ostiolse equal and very small. jS. unequal 
and larger (allied to calamop. fibrosa, G. xxviii. 4.) 
C. incrustans. Ph. PL I. fig. 63, 64. Bolland. 
Incrusting, cells short, transverse tubuli in rows. 
