-1869.] DAVIDSON—PEBBLE-BED BRACHIOPODA, 75 
Salterton are of Devonian age; and I am glad to beable to add that, 
after having examined my drawings and heard my views, Mr. Salter 
had, both by word and letter, frankly admitted having been mis- 
taken when he referred all the fossiliferous pebbles at ‘Budleigh to 
the Lower-Silurian period *, 
Silurian Species (according to Rouault and Salter). 
1. Lingula Lesueuri (Rowault). Not very rare. 
Rouaulti (Salter). Not very rare. 
Hawkei (Rouault). Not very rare. 
3 
Species of which the agers not certain ; all occur in the same rock. 
4. Orthis redux (Barr.?), var. budleighensis (Dav.). Very abundant. 
5 Valpyana (Dav.). Not very rare. 
6. Vicaryi (Dav.). Not common. 
7. —— Berthoisi, Rowault?, var. erratica (Dav.). Not very rare. 
- Spirifera octoplicata (Sow.), or S. elevata (Dalm.)? Not common. 
0 
1 
. Rhynchonella? ovalis, Dav. Not common. 
. Terebratula?. sp.? Very rare. 
. Strophomena, sp.? Rare. 
Devonian Species. 
12. Spirifera Verneuilii (Murch.). Very common. 
macroptera, var. microptera (Goldf.). Rare. 
14, Athyris budleighensis (Dav.). Rare. 
15. Atrypa, sp. (perhaps reticularis). Rare. 
16. Rhynchonella inaurita (Sandb.). Very abundant. 
17. —— elliptica (Schnurr?). Rare. 
18. Vicaryi, Dav, Not common. 
19. ,sp.? Rare. 
20. ,sp.? Rare. 
21. Streptorhynchus crenistria (Phil.). Rare. 
22. Productus Vicaryi (Salter). Common. 
23. Chonetes, sp. Rare. 
Species presenting a Devonian facies, but whose positive age cannot 
yet be correctly decided. 
24. Lingula? Salteri (Dav.). Not common. 
25. Discina Vicaryi (Dav.). Not common. 
26. incerta (Dav.). Rare. 
27. ? Edgelli (Dav.). Rare. 
28. Crania transversa (Dav.). Rare. 
* In a very interesting memoir “On the Lower Silurian formations in the 
Department of the Manche in France” (Mémoires de la Soc. Imp. des Sciences 
de Cherbourg, vol. ix. 1863), M. Bonissent notices beds of Red Sandstone, or 
quartzite, which in many localities, carefully described by him, contain Orthis 
redux, O. Berthoisi, O. Davidsi, O. Damjoui, and a large undescribed species of the 
same genus associated with Calj lymene Tristani, Dalmanites socialis, &e. These 
sandstones are considered by him to be equivalents of the Grés de May, near 
Caen, in Normandy. The O. redua occurs in the Department of the Manche, 
and not far from Cherbourg, both in quartzites and in schists which the author 
refers to the ‘“‘faune seconde” of Barrande, or stage of the schists of Angers. If, 
consequently, our little Budleigh species agrees specifically with the form so 
named by M. Bonissent, the eight species occurring along with it in the same 
rock or pebble at Budleigh Salterton, will have to be considered Silurian. M. 
Bonissent mentions likewise the presence of Lingule resembling L, Lesueuri 
in some of the sandstone beds of the same Department. 
