

ae a Reference to McCoy’s 
Drawers, |Synopsis : and Figures of Genera. 
Harpidella, p. 143. 

Ceraurus Wilkamsi, 
p. 155. 
Pl fee: 0s. 
Go 
Go 
Go Dysplanus centrotus, 
Pl. 15, fig. 19, p. 173. 
G 
Go 

G C. Blumenbachit, p. 165. 
C. subdiademata, 
Pl. 1 F, fig. 9, p. 166. 


UPPER BALA GROUP. 
“I 
“I 


Names and References; Observations, &c. 

Cyphaspis megalops, McCoy (Decade 
Geol. Surv. No. 7, pl. 5). For 
genus see Wenlock rocks. 
Cheirurus bimucronatus, Murch. 
(Decade 7, pl. 2. Mon. Brit. Tril. 
pl. 5, figs. 1—5). The genus Ce- 
raurus cannot stand—so ill de- 
scribed. 
Menus Thomsoni, Salter (Pal. Mon. 
Brit. Tril. pl. 28, figs. 2—4). A 
species quite characteristic of 
Llandovery beds. The Zileni differ 
by good but obscure characters. 
Lichas bulbiceps? Salter and Phillips 
(Mem. Geol. Sury. 11 Pt. 1, pl. 8, 
fig. 8). I am not sure of this 
being the Dudley one. 
Illenus Bowmanni, Salter (Mon. 
Brit. Tril. pl. 28, figs. 6—13). 
One of the characteristic Cam- 
brian forms which range here also. 
Encrinurus punctatus, Briinn (Quart. 
Journ. Geol. Soc. Vol. 6, p. 158, 
pl. 32, figs. 1—5). Another fossil 
which links the Llandovery to 
the Silurian. 
Encrinurus punctatus, var. arena- 
ceus, Salter (Decade 7, Geol. 
Surv. pl. 4, p. 6). In some beds 
this variety prevails. 
Calymene Blumenbachii, Brongn. 
(Mon. Brit. Tril. pl.8, figs. 7—16). 
The common Dudley form of the 
species, which varies much. In 
the Caradoc the glabella (stomach) 
is reduced, but attains its full 
size in the Dudley Limestone. 



Numbers and Localities. 
Upper Bala proper. Llandovery Group. 


b. 203, Mullock, Gir- 
van. 
a. 199*, Goleugoed 
(Mz Williams). 
a. 183, Mullock. 

b. 204, Mullock, Gir- 
van. 
b. 205, 
Girvan. 
Drummock, 
} 
b. 206, Mathyrafal. 
a. 183*, Drummock, 
near to Girvan; Mul- 
lock (C.  subdiade- 
mata). 

