182 
SILURIAN. 

Case and 
Column of 
Drawers. 
Gf4 
Gf4 
Gf4 
Gf4 
Gf4 
Gf4 
Gf5 
Gf5 
Gg 
Gf5 
G@f5 
Gf5 
Gf 
Gg2 
Reference to McCoy’s 
Synopsis; and Figures of Genera. 

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


Pl. 11, fig. 7, p. 260. 
Pl. 11, fig, 8, fig. 263. 
P. Boydi, p. 259. 
Pl. 11, fig. 4, p. 268. 

M. complanata, p. 266? 
MM. solenordes, p. 269. 
Anodontopsis, p. 271. 
Pl. 1 K, figs. 14, 15, p. 271. 
Pl. 1x, figs. 11, 12, 13, 
p. 271. 
Orthonotus, p. 274. 




Pterinea demissa, Conrad. A variety of P. 
retrofleca, squarer and less falcate at the 
wing. 
Pterinea demissa, var. with more point to wing. 
Pterinea subfalcata, Conrad. Regular squame 
of growth, and irregular radiating strie. 
Pterinea Sowerbyi, McCoy, p. 263. Beautiful 
variety of it. 
Pterinea tenuistriata, McCoy. Like a small 
P. retroflexa, but with radiating striz. 
Pterinea pleuroptera, Conrad. Has shorter 
wing than P. retroflexa, and some ridges on 
the posterior line. 
Modiolopsis planata, Salter. Flat area, and 
valves slightly keeled. 
Modiolopsis planata, var. longer, and pressed in 
stone (not of Sowerby, which is Orthonotus). 
Modiolopsis, sp. unnamed. 
Modiolopsis levis, Sow. (Siluria, 2nd ed. pl. 
34, fig. 7). 
Anodontopsis angustifrons, McCoy. Two va- 
rieties, a very broad and a narrower one. 
Some of them are almost circular. 
Anodontopsis bulla, McCoy. These rounded 
shells are but doubtfully of the genus. They 
resemble the recent Kellia. 
Goniophora cymbeformis, Sow. (Siluria, 2nd 
ed. pl. 34, fig. 15). 
Mytilus mimus, sp. Very like the living 
mussel, 



b. 18, Benson Knott. 
b. 17, Benson Knott. 
b. 992, Benson Knott; b. 
22, Pont-ar-y-llechau, Llan- 
gadock. 
b. 87, Brigsteer, Kendal. 
b. 21, near Ludlow; b. 20, 
b. 86, Benson Knott, Ken- 
dal. 
b. 993, Benson Knott, Ken- 
dal. 
b. 72, b. 73, var. Kirkby 
Moor, Kendal; b.71, Kendal. 
b. 92, Benson Knott. 
b.994, Lesmahagow, Lanark. 
b. 995, Llechclawdd, Mydd- 
fai, Llandovery. 
b. 68, Benson Knott; b. 79, 
Kirkby Moor, Kendal. 
b. 997, Kirkby Moor, Ken- 
dal. 
b. 996, Burton and Brock- 
ton, 
b. 141, Lesmahagow. 
