Fig. 
1—11. 
12, 13. 
14—20 
2126 
27—29 
30. 
ol. 
PLATE 
SILURIAN SPECIES. 
Lingula Lesueurt, Rouault. Lower Silurian. Figs. 1—10, specimens of 
various ages. ‘“ Pebble-bed,” Budleigh-Salterton, Devon- 
shire. Collection of Mr. Vicary. Fig. 11, from the 
Drift near Rowington, Warwickshire. Collection of the 
Rev. P. B. Brodie. 
Bechet, Salter. Upper Llandovery, Marloes Bay. Fig. 12a, part of 
the outer surface, magnified. Mus. Geol. Survey, 
London. 
Rouaulti, Salter. Lower Silurian, Budleigh-Salterton. Collection of 
Mr. Vicary. 
Hawkei, Rouault (?). Same locality and collection. Figs. 2i—23, 
after the original figures by Mr. Salter (‘ Quarterly Journal 
Geol. Soc.,’ vol. xx, pl. xvii, figs. 2a, 26, 3). Fig. 26 
is figured in the same plate (fig. 6) as Lengula Brimonti, 
Rouault ; but the specimen appears to be a modification 
or malformation of the typical form of Z. Hawket. 
Salteri, Davidson. Lower Silurian ?, Budleigh-Salterton. Collection 
of Mr. Vicary. 
sp.? Perhaps a variety of Z. Lesweurc; but it likewise resembles 
some specimens of Z. crumena. Budleigh-Salterton. 
sp. 2? Undetermined, one specimen only having been found. Bud- 
leigh-Salterton. Collection of Mr. Vicary. 
