MENEVIAN GROUP. 
loa | 
| 
Reference to McCoy's 
Synopsis: and Figures of Genera. 

Case and | 
Column of 
Drawers. 
Names and References; Observations, &e. 
Numbers and Localities. 


Gh 
| 
Conocoryphe variolaris, Salter (ib. figs. 6, 7). 
Conocoryphe (or Conocephalus, as it is often 
written) belongs to a group of trilobites in- 
termediate between Calymene and Olenus 
| (see Bala Group), and is extremely common 
in the Lingula flags, and the older Cambrian 
rocks in all countries. (Ptychoparia, Corda.) 

Conocoryphe applanata, Salter (Quart. Geol. 
Journ. Vol. xxv. pl. 2, figs. 1, 2, 4; 1869). A 
small species, with flattened body. 
Gh 
Fry of Conocoryphe, 
greatly magnified. 
Convex, and 
(Vol. xxv. ib. 
Conocoryphe humerosa, Salter. 
with spines to the pleure. 
pl. 2, fig. 7.) 
Gh 

Conocoryphe bufo, Hicks (Quart. Geol. Journ. 
1869, pl. 2, fig. 8). A massive species, gra- 
nulate all over, with a great produced front. 
The fry of 
possesses fewer segments, of- 
ten but one or two, and is 
blind, and without suture. 
Gh 
Conocoryphe? Homfrayi, n. sp. A fine species 
34 inches long, with slightly deflected pointed 
pleuree. 
Gh 
Conocoryphe? 2 sp. Both these species are 
much like Olenus, but the pleurze are facet- 
ted and deflected as in Conocoryphe. 
Ch 

Conocoryphe coronata, Barr. Boh. Syst. Silur. 
pl. 13, fig. 20. Prof. Corda separated this 
from the other species of Conocephalus, on 
account of the absence of eyes. But it 
seems that Zenker intended this group for 
the true Conocephalus : hence we must sepa- 
rate the others, rather than this. 
Gh | 
Gh | Erinnys venulosa, Salter (Quart. Geol. Journ. 
ined.). A trilobite with minute eyes, no 

| 
| facial suture, and the most numerous body- 
segments, twenty-three. It is possibly not 
distinct from Harpides, Beyrich. Two spe- 
cies are figured from Sweden by Angelin. 


St. David’s. (Dr. Hicks.) 
St. David’s. (Presented by 
Dr. Hicks.) 
Cast only. Do. Do. 
a. 476, cast, (pres. by Dr. 
Hicks,) lowest beds of Me- 
nevian Group, St. David's. 
b. 350, Maentwrog Valley, 
base of Menevian Group. 
(D. Homfray.) 
b. 270, Tafarn Helig. near 
Trawsfynydd. (D. Hom- 
fray.) b. 355, Waterfall 
valley, base of Menevian. 
(CDSE) 
b. 307, Head of the Rhaiadr 
ddu valley, base of the for- 
mation. This locality is 
very rich in Trilobites. 
Nearly all the St. David’s 
species are found there. 
(Pres. by D. Homfray.) 
a. 484, St. David's. (Pre- 
| sented by Dr. Hicks.) b.301, 
302, Waterfall valley, S. of 
Maentwrog. b. 303, per- 
fect—same locality. (Mr. D. 

| Homfray.) 
