172 



Proceedings of the Royal Irish A cademy. 



(cr). Body surface granular, apex of telson 

 not concave, outer ramus of uropods 

 about equal in length to the basal 

 joint, the two rami about equal in 

 length ... 



•pygmaeus. 



Two of these species — i.e. spinosus and liiiearis — have not as yet been 

 found in Ireland, but we include them in the above table for convenience of 

 reference, as being very likely to occur eventually. 



Trichoniscus pusillus Brandt. 



35 



34 40 39 







33 36 37 



38 



27 28 



29 32 





26 



25 30 31 





16 17 



24 23 22 





15 



18 19 21 





9 10 



14 13 20 





2 8 7 



11 12 





14 5 



6 





3 







One of tlie commonest of our Wood- 

 lice, this little species is almost 

 ubiquitous in damp places ; in fact, a 

 liandful of damp moss or rubbish can 

 hardly be collected anywhere without 

 containing specimens of it. It ranges 

 all over Northern and Mid Europe, and 

 has also been taken in Northern Africa 

 (Algeria) and in America (Budde- 

 Lund). 



Trichoniscus vividus (Koch). 



This species, which lives in very 

 damp situations, is, so far as our present 

 knowledge of its distribution goes, con- 

 fined to the valleys of the Barrow 

 and Slaney rivers. Although we have 

 records of it up to the present only from 

 four of the county divisions, wg think 



it will probably be traced eventually all 

 along the courses of these rivers and 

 their tributaries. 





35 



34 



40 



39 









33 



36 



37 



38 



27 



28 



29 



32 











26 



25 



30 



31 



16 



17 



24 



23 



22 







15 



18 



19 



21 





9 



10 



14 



13 



20 





2 8 



7 



11 



12 







1 4 



5 



6 









3 













Originally taken at Portlaw, Co. 

 Waterford (Kinahan), it has since 

 been taken at Cappagh in the same 

 county (11. F. S.) ; and has also been 

 found at Gowran, Co. Kilkenny 

 (D. K. P. B.); Borris and Tinnahinch 

 (R. A. P.), and near Bagenalstown at 

 Fenagh, and at Kilcarry Bridge, Co. 

 Carlow (D. R. P. B.) ; and also 

 near Balliokmoyler, Queen's Co. 

 (B. R. P.B.). 



It has not yet been taken in England 

 or in Scotland, while on the Continent 

 of Europe it occurs in France (Budde- 

 Ltind), and in Spain (Dollfus). 



Trichoniscus roseus (Koch). 

 Though usually found in gardens. 



