100 PALEOZOIC PALEONTOLOGY. | 
6. Metaplasia plicata n. sp. 
. Anoplotheca flabellites (Con.). 
. Meristella lata (Hall). 
9. Actinopteria textilis var. arenaria (Hall). 
10. Platyostoma ventricosa Con. 
11. Tentaculites elongatus Hall. 
12. Dalmanites sp. wndet. 
Locality 15 D.—In the roadside, a little less than one mile south 
of Brick House, an outcrop of these siliceous limestones may be seen. 
Fossils are not abundant, only the two following species having been 
recognized : 
1. Spirifer murchisoni Castel. 
2. Actinopteria sp. undet. 
Locality 25 F.—From a locality one and one-half miles directly 
north of Layton the following species were collected : 
1. Chonostrophia complanata (Hall). 
2. Spirifer murchisont Castel. 
3. Meristella lata (Hall). 
Locality 37 A.—Three-fourths of a mile west. of Layton, on the 
road to Dingman’s, one of the best exposures of these siliceous lime- 
stones may be studied. The beds outcrop along the roadside, and 
they have been excavated more or less in building the road. This 
is one of the best localities for collecting the fossils of the horizon, 
and the following species have been recognized : 
1. Pholidops arenaria Hall. ? 
. Stropheodonta magnifica Hall. 
. Leptena rhomboidalis Wilck. var. ventricosa (H.). 
. Chonostrophia complanata (Hall). 
. Anoplia nucleata (Hall). 
. Rhipidomella sp. cf. R. musculosa (Hall). 
. Beachia suessana (Hall). 
. Spirifer arenosus (Con.). 
. Sprifer murchison Castel. 
. Cyrtina varia Clarke. 
. Metaplasia pyzidata (Hall). 
. Anoplotheca flabellites (Con.). 
. Meristella lata (Hall). 
14. Actinopteria textilis var. arenaria (Hall). 
15. Platyostoma ventricosa Con. 
16. Dalmanites sp. undet. 
17. Phacops sp. undet. h - 
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