80 Proceedings of the Royal Irish Academy. 



at roote of grass, among moss, etc.; but is rather scarce ami difficult to find. 

 In England it is known in the south from Cornwall to Kent, but has not yet 

 been found in the north of England or in Scotland. Mr. Foster's discovery of 

 the animal in Co. Down — in perfectly natural conditions in Corry's Glen, 

 Hillsborough — suggests that it may be widely distributed in Ireland. 

 Down. Hillsborough 1912(25) — Foster. 



9. Obisium muscorum Leach. — Found under stones, among dead leaves, 

 moss, etc., in the open and in woods, from sea-level to near the tops of our 

 mountains ; widely distributed and abundant. Eecorded for Ireland, without 

 locality, by Cambridge in IH92(I0) and by (krpenter andEvans in 1895(11). 



Kerry South. Kenmare 1899 (16)— Halbert. 

 Kerry North. Killarney 189;3 ( 16)— Nat. Mus. Col. 

 Cork West. Glandore 1896 (16)— Halbert. 

 Carlow. Fenaghl909 (18)— Pack-Beresford. 

 Galway West. Leenane 1897 (16) — Halbert. 

 Wicklow. Ovoca 1894 (16)— Nat. Mus. Col. 

 Dublin. Lucan 1892 (16j— Seharff. 

 Mayo West. Delphi 1897 (16)— Halbert. 

 Donegal East. Bundoran 1913 — Foster. 

 Tyrone. Albany 1910— Foster. 

 Armagh. Loughgilly 189:'. (IG)— W. F. Jolinson. 

 Down. Hillsborough 1910— Foster. 

 Antrim. Kinbane 1897 fl6)— E. Welch. 



10. Obisium Carpenteri Ivew. — This fine species was ascertained in 1909 

 to inhabit Ireland, having been found in the extreme south-west, at Glengarill, 

 Co. Cork (171. It occurs there on a rocky wooded hill-side, under the flaking 

 outer-bark of Arbutus-trees, in rock-crevices, and among dead leaves (20). 

 The animal is unknown in Britain. Its range with us may perhaps be as 

 restricted as that of Arbutus and Geomalacus ; and in this connection, in 

 view of facts known to everyone, it would be of interest to ascertain its 

 continental distribution. As already stated (18), however, confusions of 

 nomenclature leave us little that is certain; but it is perhajjs significant that 

 the animal is in France, according to Simon, a soutliern species, rare in the 

 environs of Paris, and on the contrary commonest of all in Corsica and in 

 Algeria. 



Cork West. Glengariff 1909 (17)— Kew. 



11. Obisium maritimum Leach. — 0. maritimum lives on the sea-shore 

 between neap-tide levels, where it is the largest member of an interesting 

 society of terrestrial creatures, inhabiting crevices from which the air is not 

 entirely expelled by the water. It occurs in old deep-seated rock-fissures and 



