34 

eee Reference to McCovy’s 
Drawers. Synopsis: and Figures of Genera. 

G UN 

A. tyrannus, labrum. 
G_ | Also &. latus (part), p. 172 (not 

the figure). 
Gk Lamp shells. 
Gk Pseudo-Crania, p. 187. 
Pl. 15, f. 1. 
G p. 252. 
G p. 253. 
G 
G p. 251. 
UPPER CAMBRIAN. 


Names and References; Observations, &c. | Numbers and Localities. 



Asaphus peltastes, Salter (Mon. Brit. Tril. pl. 
22, figs. 1—4). A smaller and more convex 
species, with larger eyes, a narrower head, 
and fewer tail segments. 
Ilenus crassicauda, Wahl.? (Ill. latus McCoy 
in part). A caudal shield only: and proba- 
bly the only specimen known—of this com- 
mon Swedish species—in British rocks. (See 
Salter, Mon. Brit. Tril. 1866, p. 181, wood- 
cut, fig. 44.) 
Mollusca Brachiopoda. 
Discina? sp. Species of this genus occur every- 
where in all rocks, ancient and modern. 
Crania divaricata, McCoy. More common in 
Middle Bala rocks: the free unattached spe- 
cies of Crania may deserve separation. 
Lingula Ramsayi, Salter (Dav. Sil. Brach. p. 
55, pl. 3, figs. 4952). <A large pentagonal 
species. 
Lingula granulata, Phillips, Mem. Geol. Surv. 
Vol. 1. pt. 1, p. 370, pl. 25. A fine square 
species, with granular lines of growth, crossed 
by regular fine rays. 
Lingula obtusa, Conrad? (Hall, Pal. N. York, 
t. 30, fig. 7, Davidson, Monog. Sil. Brach. 
1866, p. 52, pl. 3, figs. 31, 32.) Doubtful if 
it be the American species—or a form of 
the following— 
Lingula attenuata, Sowerby. (Siluria, 2nd ed. 
pl. 5, fig. 16. Dav. Sil. Br. pl. 3, figs. 18—27.) 
Lingula curta, Conrad? Pal. N. York, t. 30, 
fig. 6. Considered to be a doubtful species. 
[Spondylobolus? craniolaris, McCoy. See Wen- 
lock rocks; it is clearly not a Lower Bala 
fossil,—but from the Wenlock shales. | 


a. 81, Llandeilo. Abundant 
with the more common 
large species just men- 
tioned. 
a.90, Bugon, Knockdollian, 
Ayrshire. 
(As I. latus), same locality. 
Pen Cerrig, Builth. 
Tan-y-craig, Builth. 
Abereiddy Bay (Dr. Hicks). 
Llandeilo, rare. Meadow- 
town, Shelve. 
a. 104, Llandeilo. 
a. 2, Llandeilo. 
a. 103, Wellfield, Builth. 
