180 
Case and 
Column of 
Drawers. 
SILURIAN. 


Reference to McCoy's 
Synopsis: and Figures of Genera. 
Names and References; Observations, &c. 
Numbers and Localities. 


Ge2 
Gf 
Gf 
Gfl 
Gf 

Gfl 
Gf 
Gfl 
Gfl 
Gfl 
Gf 

Discina, p. 191. 
p. 190. 

Orbiculoidea, p. 189. 
S. subspuria, p. 195. 
Henvithyris, p. 204. 
Hemithyris, p. 207. 
H. Davidson, p. 200. 

Lingula, sp. like minima, Salter (Explan. Sheet 
32, Mem. Geol. Surv.). 
Lingula cornea, Sow. (Siluria, 2nd ed. pl. 34, 
fig. 2). (See ZL. minima, p. 179.) 
Lingula Lewisii? Sow. (These specimens are 
fine, and possibly a large variety of L. 
cornea, Davids. Sil. Brach. t. 3, figs. 1—6.) 
Trematis (Discina) striata (Davidson, Sil. 
Brach. t. 6, figs. 1—4). 
Discina rugata, Sow. (Siluria, 2nd ed. pl. 20, 
figs. 1, 2, Davidson, Sil. Brach.). 
Discina, sp. like Forbesii (perhaps same). 
Crania (see p. 135). 
Crania implicata, Sow. (Siluria, 2nd ed. pl. 20, 
fig. 4. Davids. ]. c. pl. 8, fig. 13). A very 
small species well described by Davidson. 
Spirifer elevatus, Dalm. (see p. 158), equally 
common in Gothland, and varying much. 
8. bijugosa, McCoy, from rocks of this age 
in W. Ireland, is a kindred species. 
Rhynchonella nucula, Sow. (see p. 167). The 
commonest of all Ludlow shells, except its 
constant companion Chonetes lata. Both 
began in the May Hill sandstone and mul- 
tiplied when sandy strata and shallow water 
prevailed. 
Rhynchonella Wilsoni, Sow. (sce p. 167). 
Rhynchonella Wilsoni, var. Davidsoni, McCoy 
(see p. 141). 


b. 138, Lesmahagow. 
b. 956, near Ludlow; b. 48, 
Benson Knott, Kendal. 
b. 14, Benson Knott, Ken- 
dal. 
b. 958, Benson Knott. 
b. 959, Woolhope ;_ b. 960, 
near Ludlow; b. 961, Pot- 
ter Fell, Kendal; b. 962, 
Benson Knott, Kendal; b. 
963, Burton and Brockton. 
b.964, Park Lane, Llandeilo. 
Park Lane, Llandeilo. 
b. 965, N. end of Potter 
Fell; b.967, Benson Knott. 
b. 968, Lambrigg Fell, 
Kendal; b.969, Burton and 
Brockton (and as David- 
sont); b.970, Benson Knott, 
Kendal; b. 971, Collinfield, 
Kendal; b. 972, Mortimer’s 
Cross, Aymestry; b. 973, 
Woolhope; b. 974, near 
Ludlow. 
b.975, Burtonand Brockton. 
b.977,Burtonand Brockton. 
