CKUSTACEA OT NORTHUMBERLAND AND DURHAM 297 



PoRCELLio PICTUS Brandt and Ratzeburg. 



1898. Porcellio pictus, Sars (G. O.), Crust. Norway, vol. ii., 



Isopoda, p. 177, pi. Ixxviii., fig. i. 

 1906. Poj-cellio pictus, Webb and Sillem, The British 



Woodlice, p. 33, pi. xiv. 



A few in the Hancock Museum grounds, Newcastle. 

 Several examples in garden and cellars, and a small colony 

 under a stone in quarry at Winlaton. Common under stones 

 near inn at Egglestone-in-Teesdale, also under bark of logs 

 laid for firewood; and at Corbridge (Bagnall). N.D. 



PoRCELLio DiLATATUS Brandt. 



Several taken in rubbish heap behind Hancock Museum, 

 Newcastle ; a few in orchid houses at Wylam ; common at 

 Alnwick ; swarming in cold greenhouses at Winlaton, and also 

 in propagating houses Ravensworth, and in Leazes Park, 

 Newcastle-on-Tyne (Bagnall). N.D. 



PoRCELLio Rathkei Brandt. 



1853. Porcellio trivittatiis, Lereboullet, Mem. Crust. Fam. 



Cloportides (Mem. Soc. Nat. Hist. Strasbourg), p. 54, 



pi. i., figs. 13, 14, pi. iii., figs. 66-70. 

 1898. Porcellio Rathkei, Sars (G. O.), Crust. Norway, 



vol. ii., Isopoda, p. 180, pi. ixxix., fig. i. 

 1906. Porcellio Rathkei, Webb and Sillem, The British 



Woodlice, p. 34, pi. xvi. 



Near Winlaton Mill, Stocksfield, and Humbledon Hill near 

 Sunderland (G. S. B.). A single example under stones in 

 meadow at Lockhaugh near Rowlands Gill (Bagnall). N.D. 



Porcellio l^vis Latreille. 



One adult and three young under stone on rubbish heap 



behind the Hancock Museum, Newcastle-upon-Tyne (Bagnall). 



N. 

 Metoponorthus pruinosus (Brandt). 



1868. Porcellio pruinosus, Bate and Westwood, vol. ii., 



p. 487. 

 1898. Metoponorthus pj'uinosiis, Sars (G. O.), Crust. 



Norway, vol. ii., Isopoda, p. 184, pi. Ixxx., fig. 2. 



