I9IO- Ke:w. — Animals of South- Western Ireland. 69 



search for Obisiiuii inaritinium ; but the animal was found at 

 last near the quay at Derreenacarrin living in vertical rock- 

 fissures, which would be rather deeply submerged at ever}' 

 tide ; and which were inhabited also by Aepus, but whether 

 A. Robinii or A. marinns was not ascertained ; both are known 

 on the shores of Co. Cork.^ 



0\\ the wooded hill-sides of the glen collecting was again 

 difficult, because one had to contend not only with minute 

 biting flies but also with armies of ticks which seem charac- 

 teristic of this place.- It v»'as necessar}', however, in spite of 

 these creatures, to spend a considerable time among the trees 

 on these hill-sides, more especially on one — not far from the 

 junction of the Glengariff and Canrooska Rivers — which wa:, 

 evidently in natural condition and seemed a place of much 

 promise. This hill-side was beautifully wooded ; and like the 

 rest of the glen wonderfully warm and sheltered ; it was 

 moderately steep, rough with fallen rock, and at intervab: 

 with vertical rock-faces running in transverse fashion and 

 forming small ravines. The covering of wood was of open 

 character, for the most part of small oaks, holly and Arbutus, 

 with undergrowth of ling and bracken ; and with Saxifraga 

 unibrosa showing itself here and there on barer rocks. The 

 trees of Arbutus were numerous, particularly on the upper parts 

 and about the walls of the ravines, and many were old, with 

 big divided trunks and with characteristic ragged bark. An 

 examination of these trunks did not disclose any trace of 

 arboreal Chelifers : but some nests were found which were 

 evidently the work of a false-scorpion of another kind. These 

 nests differed from any I had seen under bark, and were, like 

 those of Obisiiim viaritUnnm^ large of white silk and with little 

 or no extraneous matter adhering; nor was this resemblance 

 without significance, for the nests were found to belong to a 

 large stout Obisium — a genus not usually arboreal — and the 

 animal has proved to be of unusual interest. It probabh- lives 

 for the most part on the ground ; perhaps under or behind 

 fallen or half-detached pieces of rock ; and one individual — 

 the only one not in a nest — was found in such a place. It is 

 evident, however, that the creature is here in the habit of 

 resorting to the Arbutus-trunks at least for moulting and 

 reproduction, for nests were found on as many as five different 



Proc. R. J. A. (3), vi. (1902), 588. -Irish Nat., xi. (1902), 75. 



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