86 THE BRITISH WOODLICE.
out, there are not more than four. The body is practically
speaking smooth for it bears only very small tubercles, widely
separated. In Trichoniscus vividus the antennae
lack the bristles which characterise those of the
other species in the genus. The species under
consideration was discovered by Dr. Kinahan
in March, 1858, at Portlaw, Co. Waterford and
is active even amongst the snow.
BRITISH LOCALITIES :—
Ireland: Portlaw, Co. Waterford ; (Kinahan,
33): Cappagh, Co. Waterford; (Scharff, Irish
Nat., Vol. IX., p. 158) : Borris, Co. Carlow ;
(Scharff, 64.)
FOREIGN DISTRIBUTION :—
Europe: Spain; (12).
Trichoniscus roseus Koch. Plate V.
1838 Itea rosea Koch (34), part 122, pl. XVI.
1858 Philougria rosea Kinahan (33), pp. 197 and 199, pl.
XXIII., fig. 3.
1858 Philougria rosea Bate and Westwood (1), p. 460
1898 Trichoniscus roseus Sars (59), p. 163, pl. LXXIII, fig. 1.
The third British species of Trichoniscus is of a deep pink
colour and has a light yellow stripe down the back (in soms
habitats the animals are said to be quite white).
Arranged in transverse rows upon the body are
large tubercles, each of which under strong
magnification will be found to end in a tiny
hair. It is distinguished from Trichoniscus
pusillus by the larger size of its body, which is
also comparatively broader, and from Trichoniscus
vividus by the four joints of the flagellum of its
antennae which latter have strong bristles upon
them. In the former species there are five or
more joints to the flagellum and the antennae,
though hairy, lack the bristles. Trichoniscus
roseus is to be looked for in old gardens.
BRITISH LOCALITIES :—
England : Warley ; (W.M.W.) : Maldon ;
W.M.W. from R.M.) ; Stanmore; Hanwell;
Ealing; Wimbledon; (W.M.W.) : Berkham-
sted ; Torquay; (Norman, 49): Plymouth ; (Bate
and Westwood, 1 and B.M.,) : Grassendale, near Liverpool ;
(R.W.) : Newtownards ; (R.W., Irish Nat., 1904, p. 260.)