

Case and 
Column of 
Drawers. |Synopsis: and Figures of Genera. 

Go 
Go 
Go 
Reference to McCoy’s 
F, alveolaris, var, p. 19. 
Paleopora, p. 18. 
UPPER BALA GROUP. 
Names and References; Observations, &c. 

Nebulipora (Monticulipora of Milne 
Edwards and Haime is earlier). 
Nebulipora 

sp. 
Stenopora fibrosa, Goldfuss (See 
ante, p. 29). The genus Ste- 
nopora is not admitted by all 
writers; but seems to be founded 
on sufficient characters. Accord- 
ing to Lonsdale and McCoy, the 
tubes have no connecting pores. 
[N.B. As a rule, individual corals 
are extremely abundant, but the 
species few, in the Llandovery 
rocks. | 
S. fibrosa, var. ramulosa, Phill. (Mem. 
Geol. Surv. m1. pt. 1, p. 307). A 
narrow-branched coral which is 
quite common, and may be a 
distinct species, or even a Che- 
tetes. 
Favosites alveolaris, Goldf. (Ff. as- 
pera, D’Orb. Siluria, 2nd ed. pl. 
40, fig. 2). 
Favosites multipora, Lonsdale (Si- 
luria, 2nd ed. pl. 40, fig. 5). A 
very doubtful fossil, since it is all 
but impossible, save for the ex- 
panded form, to distinguish it 
from the £. aspera which accom- 
panies it. Numerous rows of 
pores are figured on the tubes by 
Lonsdale. 
Heliolites tubulata, Lonsdale, Sil. 
4th ed. pl. 39, fig. 3. 

73 

Numbers and Localities. 

Upper Bala proper. 


Llandovery Group. 
__ 
Mathyrafal ffrid. 
b. 183, very common 
at Mathyrafal ffrid, 
near Meifod. [As 
this locality is often 
quoted, we shall ab- 
breviate it to the first 
word. | 
Allt Goch, and other 
places near Llan- 
fyllin. 
do. do. 
b. 171, Llanfyllin, 
b. 184, Allt Goch, 
Llanfyllin; Goleu- 
goed, near Llando- 
very; Mathyrafal, 8. 
Wales; Mullock, Gir- 
van. 
b. 186, Mathyrafal, as 
before; b. 185, Allt 
Goch, _—_ Llanfyllin ; 
Goleugoed. 
b. 187, Allt Goch, 
Goleugoed; Mullock. 
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