98 
SILURIAN. 

Case and 
Column of = F 
Drawers. |Synopsis: and Figures of Genera. 
Reference to McCoy’s 

Gal0 
Gald 
Ga8s 
Gal0 
Ga8 
Gal0 
Ga 
Gal0 
Gal0 
Gald 
p. 318. 
p. 313. 

p. 815. 
p. 314. 
p. 321. 
p. 319. 


Names and References; Observations, &c. 

Numbers and Localities. 

Orthoceras ventricosum, Sharpe 
(Quart. Journ. Geol. Soc. 2, pl. 
13, f. 3). 
[These last two slight thin shells 
were regarded by Prof. Forbes 
as species of Pteropoda (Cresevs), 
the septa are very seldom visible, 
being easily crushed. ] 
Orthoceras angulatum, Wahl. (Si- 
luria, 2nd ed. pl. 28, fig. 4). 
Orthoceras, sp. 
Orthoceras subannulatum, Miinst. 
Beitriige zur Petref. p. 99, t. 19, 
fig. 3. 
Orthoceras, sp. 
Orthoceras tenuicinctum, Portlock 
(Siluria, 3rd ed. Foss. 42, fig. 3). 
Orthoceras laqueatum, Hall? (Pal. 
New York, t. 56, fig. 1, p. 206). 
Orthoceras dimidiatum, Sow. (Si- 
luria, 2nd ed. pl. 28, fig. 5). 
Orthoceras (sp. smooth). 
Orthoceras tracheale, Sow. (Siluria, 
2nd ed. pl. 34, fig. 6). 
Orthoceras annulatum, Sow. (Silu- 
ria, 2nd ed. pl. 26, figs. 1, 2). 
Trochoceras, sp. Very ill preserved 
and filled with spar. 
Wales and Shropshire. 

b. 543*, D. F. Pen- 
y-Big, Bron Einion. 
b. 545, D. F. Corwen 
Saw Mills; b. 545*, 
Llangynyw Rectory. 
b. 540*, D. F. Llan- 
gynyw Rectory. 
b: 539%, W. 1. Old 
Radnor to Presteign. 
Westmorland and S. of 
Scotland. 

b. 537, C.G. N. end 
of Middleton Fell, 
Kirkby Lonsdale. 
b. 546, C. F. Road 
from Coniston to 
Hawkshead. 
b. 546*, C. G. Helm- 
side. 
b. 537*, C.F. Rebec- 
ca Hill, Ulverston. 
b. 536, C. F. Road 
from Coniston to 
Hawkshead ; b.536*, 
Helmside. 
b. 547, C.F. Road 
from Coniston to 
Hawkshead. 
b. 547*, C. F. Helms 
Knot, Dent. 
b. 532, C.F. Dry 
Ridge, Horton. 
b. 532, C.G. Howgill 
Fell near Sedbergh. 
b. 559, C.F. Dry 
Ridge, Horton in 
Ribblesdale. 

