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A List of the Maritime, Sub-Maritime and Coast-fre- 
quenting Coleoptera of South Devon and South 
Cornwall, with especial reference to the Plymouth 
District. 
By 
James H. Keys, F.E.S. 
PREFATORY REMARKS. 
Ir may perhaps be well to say that by maritime species are meant those 
Beetles whose habitats are covered by the sea for a considerable time 
during the flow and ebb of the tide. By sub-maritime species are meant 
the dwellers at high-tide mark or thereabouts, subjected to occasional 
wettings by the sea, and the species inhabiting brackish pools and wet 
places in salt-marshes. The coast species comprise individuals living 
under stones and rejectamenta, as a rule safe from the reach of high tide, 
and those peculiar to the roots, leaves and flowers of plants attached 
to the coast, as well as inhabitants of wooden piles on the shore and the 
denizens of the ooze of fresh-water trickles on the cliffs—excepting 
species equally obtainable inland. 
The Maritime Beetles included in the list comprise eight species, and 
are preceded by a double dagger (t) for the sake of distinction ; the 
Sub-Maritime amount to fifty-four species and are preceded by a single 
dagger (t); the Coast Species number eighty-nine, and are preceded 
by an asterisk (*). 
The Plymouth District has been regarded as including any locality 
which in a day conveniently admits of four or five hours’ collecting, 
in addition to the journey thither and back. Roughly speaking this 
embraces the coast line from Slapton Ley on the east to the Seaton 
Valley (Downderry) on the west. 
The writer is fully conscious of the fact that his work necessarily falls 
considerably short of being a complete catalogue of the species indigenous 
to the district, as much of the extensive coast line has never been ex- 
amined by any collector, whilst his own work at the foreshores of the 
several estuaries and at the numerous tidal creeks has been limited to 
a few localities of easy access. A large proportion of the country still 
awaits the attention of the Coleopterist. That it would repay careful 
NEW SERIES. VOL. XI. No. 4. MAY, 1918. 2K 
