24 



Table showing the number of species of Woodlice recorded 

 from each County Division in Ulster. 



Cavan ... 



9 species. 



Tyrone 



II species 



Monaghan 



... 12 ,, 



Armagh 



... 13 .. 



Fermanagh ... 



... 9 ;> 



Down 



... 18 „ 



Donegal East 



... II ,, 



Antrim 



... 19 „ 



Donegal West 



... 8 „ 



Londonderry ... 



IO ,, 



The following table gives the number of County Divisions 

 from which each species has been recorded. 



Table showing the number of County Divisions of Ulster from 

 which each species has been recorded. 



Porcellio scaber from io Co. Div. 



P. pictus ... ... 7 ,, 



P. diktat us ... 8 ,, 



P. lsevis _ ... 2 ,, 



Nagara nana . . I , , 



Porcellionoides pruinosus 7 , , 



C>listicus convexus 6 ,, 



Armadillidium vulgare 4 ,, 



A. pulchellum ... 1 ,, 



A. nasatum ... 4 ,, 



Ligia oceanica from 6 Co. Div. 



Trichoniscus pusillus 



10 ,, 



T. roseus ... 



8 ,, 



T. pygmoeus 



10 ,, 



T. stebbingi 



3 „ 



Trichoniscoides albidus 



5 „ 



Trichorhina tomentosa 



1 >> 



Haplophthalmus mengii 



6 „ 



IT. danicus ... 



1 ,, 



Philoscia muscorum 



10 ,, 



Oniscus asellus 



10 ,, 



Annotated List of the Woodlice of Ulster. 



Ligia oceanica (Lin.). 

 This species is only found on the sea coast and is plentiful 

 wherever the shore affords suitable habitats. It is found in 

 Donegal E., Donegal W., Armagh, Down, Antrim and London- 

 derry. The County of Armagh is not regarded as maritime, but 

 Ligia oceanica extends up the river as far as Newry into this 

 County. Unusually large specimens have been observed at 

 St. John's Point (Co. Down), and in the vicinity of Portrush. 



