THE BRITISH WOODLICE. 99
Genus—METOPONORTHUS Budde-Lund, 1879 (7), p. 4.
Porcellionides Miers, 1876 (44), p. 98.
Flagellum, with two joints ; abdomen, narrow ; frontal lobe not
developed.
The hinder legs of Metoponorthus are proportionately longer
than in any other Oniscidae save Philoscia. Both genera have a
narrow abdomen, but Philoscia has an extra joint to the flagellum,
and shows no sign of lateral lobes to the head.
Metoponorthus pruinosus Brandt. Plate XIX.
1833 Porcellio pruinosus Brandt (3), p. 181.
1840 Porcellio truncatus Milne-Edwards (46), p. 173
1840 Porcellio maculicornis Koch (34), part 34, pl. XVI,
1853 Porcellio frontalis Lereboullet (39), p. 63, pl. 1, fig. 17.
1868 Porcellio pruinosus Bate and Westwood (r), p. 487.
1877 Porcellio (Porcellioides) flavo-vittatus Miers (45), p. 669 pl., LXVIII.,
fig. 4.
1898 Metoponorthus pruinosus Sars (59), p. 184, pl. LXXX., fig. 2.
Undamaged specimens of Metoponorthus pruinosus are of a
beautiful bluish-grey colour, owing to a "bloom" which is
easily brushed off, revealing a dark reddish-
brown tint beneath it. The antennae are long
and have white markings upon them.
Air-tubes occur in the first two abdominal
appendages.
BRITISH L0CALlTIES :—
England: Maldon; (W.M.W. from R.M.) :
Hanwell; Eton Wick; Kew; Ipswich; Stoke-
on-Trent; (W.M.W.): Chiselhurst; Oxford;
(Bate and Westwood): Berkhamsted; Burn-
moor ; Durham ; (Norman, 49) : Exeter ;
(Parfitt, 53); Torquay ; (B.M.—T.R.R.S.)
Scotland : Banff; (Thomas Edwards in
Norman, 49).
Ireland: Dublin ; (Kinahan, 32): Foyle Dis-
trict ; Donegal ; Galway ; Clonbrock, Co.
Galway; Mornington, Co. Meath; Santry;
Gleeson Park ; Dundrum, Co. Dublin ; Bray ; (R.F.S.)
FOREIGN DISTRIBUTION :—
Europe : Practically all the Countries of Europe are given in Dollfus' list; (23).
Asia : Japan ; China; Syria ; Ceylon ; Sumatra ; Celebes; Phillipines ;
Caucasus ; Himalayas; (23) : Christmas Island ; (B.M.)
Africa: Generally distributed; Madagascar; Seychelles; (23).