EXPLANATION OF THE PLATES. 793 
Salter record its presence in rocks of a similar age at various localities 
in the Malvern, Abberley, Woolhope, Usk, Builth, and Llandeilo Dis- 
tricts.”” Brit, Sil. Brach., p. 216. 
Fie. 11.—a, b. CHONETES STRIATELLA, Dalman, sp. 
Orthis, Dalman, Leptena lata, Von. Buch. Sil. Syst., p. 610, pl. ili., fig. 
10 b. v., fig. 13. Chonetes lata, and striatella, Sil., 4th edition, p. 524, 
piexx., fig. 8; 
a. From Sil. Syst., pl. v., fig. 13, Upper Ludlow, Ludlow. 0b. Original. 
Magnified strie, from a specimen in Mus. G.S.I. Upper Ludlow, 
Kendal, Westmoreland. 
WENLOCK AND LupLow.—In the Woolhope Beds it occurs east of Merchlin 
Conway. In the Wenlock Beds, near Walsall and Wenlock. In Lower 
Ludlow, at Vinnai Hill, &c. In Aymestry limestone, Shucknall Hill, &e. 
In Upper Ludlow it is especially abundant at a great number of localities 
in the Malvern, Abberley, Usk, and Builth Districts; and at Kendal, 
Westmoreland. In Scotland it occurs inthe Pentland Hills. In Ireland 
at Pie Cove, and Doonquin, Dingle, Kerry. Brit. Sil. Brach., 
p. 333. 
