ROCKS OF NORMANDY. 265 
only one small outlier has been found; it occurs at Siouville (north 
of Pieux) at about ten miles from the main mass; from which M. 
Bonissent inferred* ‘that the Devonian rocks occupy elsewhere a 
great part of the space between the Anglo-Norman Isles and the 
west coast of La Manche.” 
From the neighbourhood of Valognes to Golleville the Devonian 
does not extend far beyond the limits of the sea of the Marnes 
Iriséest. Approaching the town of Valognes, grey grit alternates 
with schists, and contains Orthis, little Spirifers, and Leptena Mur- 
chisoni. On the north-west of Cape Rozel a greyish quartzose grit 
containing Orthis, Spirifer, and Productus has been separated from 
the main mass of the Devonian by fraidonite and red porphyry, 
which have been injected into the Cambrian and Devonian rocks +. 
In the commune of Surtainville brownish, greenish, and grey grits, 
sometimes banded with red and yellow, contain Orthis and little 
Spirifers. At Surtainville whitish grit mottled yellowish, contain- 
ing Leptena Murchison, rests on the greenish variety §. 
The following list of fossils obtained from the Devonian rocks of 
La Manche is given by M. Bonissent | 
— 
. 
Fish-bone ? Modiola, sp. 
Dalmania callitelis, Gren. Nucula, sp. n. 
sublaciniata, Vern. Sanguinolaria soleniformis, Goldf. 
Homalonotus Gervillei, Vern, Leda, sp. n. 
Forbesii, Row. Redonia (allied to R. Deshayesiana). 
— Hausmanni, Row. Grammysia hamiltonensis, Vern. 
— Brongniarti, Row. Conocardium clathratum, D’ Orb. 
Buchii, Vern. Orbicula, sp. 
Proetus Cuvieri, Ste. Terebratula concentrica, Buch, 
Hzquerra, Vern. 
Bronteus flabelliformis, Barr. 
hispanica, Vern. 
Leperditia britannica, Pow. 
Orthoceratites calamiteus, Miinst. undata, Def. 
Buchii, Vern. —— Archiaci, Vern. 
Cyrtoceras, sp. ~—— reticularis, Linz. 
Murchisonia intermedia, D’ Arch. eucharis, Barr. 
Loxonema, sp. —— Wilsoni, Pow. 
Pleurotomaria Bachalieri. subwilsoni, D’ Ord. 
Turbo, sp. prominula, Rom. 
Macrocheilus Murchisoni, Dov. — Guerangeri, Vern. 
Natica cotentina, D’ Orb. Pareti, Vern. 
Bellerophon Seemanni, Foz. upsilon, Bon. 
Gervillii, Vern. porrecta, Bon. 
Capulus scalaris, Rou. ss Blackii, Rou. 
Lorierei, Vern. strigiceps, Lom. 
cassideus, Vern. Pentamerus galeatus, Da’m. 
Pileopsis, sp. Spirifer Rousseau, How. 
Euomphalus, sp. —— subspeciosus, Verz. 
heteroclitus, Defr. 
Conularia Gervillii, Vern. 
Serpularia, sp. Davousti, Vern. 
Pterinea spinosa, Phill. Pellico, Vern. 
levis, Goldf. —— Bellouini, Pow. 
Avyicula spinosa, Phill. (and indeter- -——— Dutemplei, Row. 
minable species). macropterus, Goldf, 
* Bonissent, p. 255. + Ib. p. 245. baie 
§ Bonissent, p. 227. | Ib. pp. 251-255. 
