9274 Insects. 
The Flora of these Islands has been described by Mr. Babington, 
in his ‘ Primitie Flore Sarnice,’ which work includes a sketch of the 
geology of the same district by Mr. Lukis, who observes that the rocks 
differ somewhat in structure from those of Brittany, and from those of 
Devonshire and Cornwall. It appears that during an early period, 
when the distribution of land and of sea was very different from what 
it is now, an island extended from Italy across France to the West of 
England, including Brittany and the Channel Islands. In the course 
of a long succession of ages some parts of this region were submerged, 
and the Channel Islands, whose configuration indicates their previous 
existence as mountain-tops, still continue, though they are gradually 
sinking into the sea. They were thus isolated from Brittany and from 
Western England, and from each other, before the bed of the cre- 
taceous sea was elevated, or before the region that includes the South 
of England and the opposite district of France rose above the waters. 
Thus their Fauna, though resembling that of Western England, is 
more exclusively primitive, for it has not been increased by the Ger- 
manic Fauna, that spread from Germany to England before these two 
countries were divided; nor by the French Fauna, that at a later 
period spread from France to South England before the sea separated 
the opposite coasts. It has been still less intermingled with the Scan- 
dinavian Fauna, and with the Spanish Fauna; and the mildness of the 
climate of these isles is owing to their small size and to their low ele- 
vation, and to the Gulf Stream which partly washes their coasts. 
The bright blue colour and transparency of the sea around the 
Islands differs remarkably from the green and dull sea about the 
English coast. 
Guernsey may be divided into two districts, which differ much from 
each other in aspect and in their respective Faunas. 
The first district consists of low plains, which have been overspread 
with sand and with detritus from the sea-shore, as they gradually 
sank nearer to a level with the latter. 
The other district forms the more lofty part of the Island, and is 
bordered on the coast by precipitous rocks, which are intersected 
with picturesque little ravines or yalleys leading to the bays here 
mentioned. 
The first district is composed of the following bays :— St. Samson 
Harbour, Bordeaux Harbour, Grand Havre, Saline Bay, Cobo Bay, 
Vazon Bay, and Pyrelle Bay. 
The second district may be divided into these bays :— Rocquaine, 
