THE BRITISH WOODLICE, 31 
colour is white, and its body is covered with tubercles. The 
edges of its side plates are toothed, its flagellum has but a 
single joint and it has no eyes. 
Miss Kate Hall tells us that, if very hungry, ants in captivity 
will kill and eat Platyarthrus. With regard to its own food, 
Lord Avebury has favoured us with the opinion that it lives on 
the spores of the lower plants, such as would be found in the 
ants’ nest. 
BRITISH LOCALITIES :— 
England ; Warley ; Hanwell; West Drayton ; 
Langley ; Kingston-on-Soar; Bluebell Hill, 
Maidstone ; (W.M.W.): Berkhamsted; Sal- 
combe ; Devon; Cheddar Cliffs, Somerset ; 
(Norman, 49): Ide, near Exeter; (Parfitt, 53): 
Torquay ; (Stebbing in 49); Lulworth Cove ; 
(Rev. A. R. Hogan teste Bate and Westwood, 
t): Hammersmith ; Oxford; Berry Head, Tor- 
quay; Plymouth; (Bate and Westwood, 1): In 
the nest of Myrmica rubra, Newton Ferrers 
FIG. 46.—FLAGELLUM 
AND LAST PEDUNCULAR (E. E. Lowe). 
JOINT OF THE ANTENNA 
See al arenes Scotland: Banff; (Thomas Edward in 49). 
offmannseggit. 
Iveland : Leixlip, Co. Dublin; Lissmore, Co. 
Waterford ; Glengariff, Co. Cork; (Scharff, 63): Bagenalstown, 
Co. Carlow; (64). 
FOREIGN DISTRIBUTION :— 
Europe: France; (28): Spain; (12): Denmark; Germany; Holland 
Bohemia; Austria; Tyrol ; Helvetia; (59). 
NOTE.—In the genera which follow, air-tubes or air-cavities 
(trachee) are present in the outer plates of the abdominal 
appendages, 1 and 2, or 1 to 5. The appendages in question 
have in consequence a milk-white appearance in the living 
animal owing to the fact that the enclosed air reflects white 
light. Considerable interest attaches to the study of these 
tracheee, which have the same function as those of insects, 
but which have been independently developed. To emphasise 
the latter fact the structures are often termed ‘ pseudo- 
trachee.”’ 
