468 THE ZOOLOGIST. 



proportionally faster. Varies a great deal in colour. There are 

 two distinct, clearly defined varieties, one light yellow and the 

 other deep brown. On the extreme lateral part of each segment 

 of the thorax they all have a longitudinal pink stripe. A speci- 

 men which I took was marked almost entirely with pink, giving 

 the animal, at a distance, the appearance of being as red as 

 Trichoniscus roseus. On the coast at Santon the brown form. is 

 very common, and I remember taking only two yellow forms in 

 that locality. The yellows are prevalent in pasture-lands. At 

 Eeigate, Surrey, I have noticed the species frequently, and 

 I took two from under the bark of a tree some distance from the 

 ground. 



P. couchii Kinah. — Common on the beach at Santon at the 

 base of the sandstone cliffs. It was originally discovered at 

 Polperro by Prof. Kinahan in 1858, but has since been taken in 

 South Devon. 



Platyarthrus hoffmannseggii, Brandt. — The only Woodlouse 

 found in the nests of British ants. In North Devon I have seen 

 it almost everywhere with the common Yellow Ant {Formica 

 fusca). Only on one occasion have I seen it with any other 

 species, and then there were several in the runs of a nest of the 

 Black Ant (F. nigra) ; but on closer examination it looked, by 

 the number of dead bodies of Yellow Ants lying about, as if the 

 Black Ants had stormed and captured the nest, or at least a 

 portion of it. Mr. E. E. Lowe, late Curator of the Plymouth 

 Museum, has taken it, according to Messrs. Webb and Sillem, 

 with Myrmica rubra at Newton Ferrers. Nothing apparently is 

 known of its relations with the ants. 



Porcellio scaber, Latr. — Common everywhere. At Santon 

 I have taken a white specimen with only a few black scattered 

 spots, the size of pin-pricks, on it. The common colour varieties 

 are a grey pepper-and-salt and a pretty rust-brown. 



P. pictus, Brandt & Katzeb. — One specimen only, under- 

 neath stone. 



P. dilatatus, Brandt. — One specimen only, taken from under- 

 neath our front-door mat ! It is grey in colour. 



P. lavis, Latr. — On Oct. 26th this year I took one from 

 a grass-tuft in a meadow near Barnstaple. It is a well-marked, 

 shapely animal. 



