124 



A CORNISH FAUNA. 



^KO-SPIRANTIA. 

 ONISCIDM. 



Gtexus, Ligia. — Falricius. 



First antennae rudimentary, second long. Tail appendage 

 directed posteriorly, having two branches. 



Ligia oceaxica. — Lin. Syst. Nat., ii, p. 1061. — Bate and Westwood, 

 p. 444. 



This species is common on fill our coasts, running with agility, 

 and when frightened simulating death. It does not live in water 

 but on the sea-shore, within reach' of the spray. It feeds on de- 

 caying animal and vegetable substances. 



Genus, Philoscia. — Latrielle. 



Ovate, sub-depressed. First antennae rudimentary; second, 

 eight-pointed ; tail appendage with two unequal branches. 



Philoscia muscoruai. — Scopelli, Entom. Carniol., p. 1145. — Bate 

 and Westwood, p. 480. 

 This species is widely distributed and very common, preferring 

 dry situations under leaves, stones, and moss, near the sea-shore. 



Philoscia couchii. — Kinahan, Nat. Hist. Rev., vol. v, 1858, p. 193, 

 pi. 23, fig. 4. — Bate and Westwood, p. 452. 

 This species runs with agility, but does not roll itself into a 

 ball. It was discovered at Talland Cove, near Polperro. Prof. 

 Kinahan, Trinity College, Dublin, and the writer, were returning 

 from paying a visit to Mr. Couch, when the former found it at 

 the margin of a high tide, mingled with Ligia oceanica, Porcellio 

 scaler, and Orchestia littorea. 



Gtexus, Philougri a . — Kin ah an . 



Like Philoscia, but with second antennae having nine or ten 

 joints. 



Philougri ariparia. — Koch, Beutsch Crust., 22, 17. — Bate and 

 Westwood, p. 456. 

 At Plymouth. At Polperro it is not uncommon in the garden 

 of the inn. At Looe it is abundant among sticks by the river 

 side It is found in very moist places amongst all kinds of de- 

 caying matter. It runs with agility, and buries itself deep in 



