Air-tubes occur in abdominal appendages 1 to 5 and the white appearance of all of these at once serves to distinguish the living animal from Porcellio scaber in which the first two pairs of abdominal appendages alone are white.
BRITISH LOCALITIES:—
England: Eton; (Stebbing, 71a): Lane End; (Stebbing, from the Misses Johnston, 71a): Acton; Ealing; Hanwell; Southall; Northolt; Greenford; West Drayton; Mortlake; (W.M.W.); Sunderland; (Brady, 50a).
FOREIGN DISTRIBUTION:—
Europe: France; (25): Bosnia; Servia; (22): Hertzogovania (B.M.); Norway; Northern, Western, and Middle Europe, everywhere; (59): Corfu (B.M.)
Asia: Transcaucasia; (59).
North America: (59).
Porcellio laevis Latreille. [Plate XVII.]
