78 
THE SILURIAN ROCKS OF THE EASTERN MENDIPS. 
map (p. 77), the accompanying number being in each case that 
with which the specimens were labelled. The following are the 
■details relative to these trenches : — 
98. At a depth of about four feet fine-grained micaceous yellow 
sandstone was met with. 
99. Thin-bedded, greenish-yellow, slightly micaceous sandstone, 
with poorly preserved fossils, was entered at a depth of four feet. 
100 The trench passed through some five feet of surface material 
containing many bits of yellow micaceous sandstone, but nothing 
was met with in situ. 
101. This trench was carried to a depth of five feet in weathered 
Old Red Sandstone, but the underlying Silurian rocks were not 
reached. 
102. Gritty mudstone with ill-preserved fossils was entered at a 
depth of four feet. Mr. Reed recognised Beyrichia, Orthis, Meristella, 
and Plectambonites, but none of the specimens were good enough to 
be specifically determined. 
103. The same as at 101. 
104. This trench soon entered fossiliferous sandy mudstone similar 
to that exposed in the rail-cutting at 92. The beds dipped at 55° 
S. S.E., affording confirmation of the somewhat doubtful dip obtain- 
able in the rail-cutting at 92. 
The following fossils, kindly identified by Mr. F. R. Cowper 
Reed, were obtained from this trench, and the assemblage is clearly 
of Wenlock rather than Llandovery character : — 
"* A try pa reticularis Linn. 
** Orthotetes pecten Linn. 
~* Spirifer sulcatus His. 
* Pholidops implicata Sow. 
"* Leptcena rhomb oidalis Wilck. 
A try pa imbricata Sow. 
Orthis elegantula Dalm. 
Chonetes striatella Dalm. 
Plectambonites transversalis 
Wahl. 
Spirifer elevatus Dalm. 
Rhynchotreta cuneata Dalm. 
Scenidium lewisi ? Dav. 
Strophonella euglypha 1 His. 
Strophomena ? sp. 
Ptilodictya la?iceolata Goldf. 
Pterinea retrojlexa Wahl. 
Orthoceras sp. 
Beyrichia sp. 
Phacops ( Dalmanites) caudatus 
Brt'inn. 
Phacops (Phacopidella) sp. 
A cidaspis quinquespinosus 
Fl. and Salt. 
ISncrinui'ns punctatus Briinn. 
Proetus stokesi ? Murch. 
Cornulites serpidarius Schloth. 
Lindstrcemia subduplicata ? 
McCoy. 
Alveolites ? n.sp. 
105. A hard grit of Old Red Sandstone type was soon entered 
at this point. 
109. This trench was carried to a depth of 4 \ feet, no rocks were 
struck in situ, but at the bottom tough clay, full of large pieces of 
itoff, was met with. Although no pebbles were found, it seems 
* Very common. 
