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 

 1 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 Portia w, 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. 



FIG. 38. — FLAGELLUM 

 AND LAST PEDUNCULAR 

 JOINT OF THE ANTENNA 



of Trichoniscus 

 vividus. 



J838 Itca rosea Koch (34), part 122, pi. XVI. 



1858 Philmtgria 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, pi. 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 some 

 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 

 pusiUus 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.) : Mai don ; 

 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.) 



FIG. 39. — FLAGELLUM 

 AND LAST PEDUNCULAR 

 JOINT OF 1 HE ANTENNA 



of Trichoniscus roseus. 



