154 The Woodlice of the Hull District. 



a paper on ' The Guests of Yorkshire Ants'.* It is found in 

 many places in the southern part of the riding, even in the 

 suburbs of Hull, but has not yet, I believe, been recorded for 

 the northern part, though doubtless it occurs there. A pale 

 yellowish brown variety lives in the nests of Donisthorpea flava 

 at Brantingham Dale. Dr. W. E. Colling e calls this variety 

 flavohrunnea. 



Porcellio scaher Latreille. 



Common everywhere, especially under loose bark in Hull 

 timber yards or in the country districts. Several varieties 

 occur. 



Var. marmorata Brandt, Houghton Woods, Weedley 



Springs. 

 Var. flavomaculata Collinge. Houghton Woods, 

 Var. marginata Brandt. Rowley. 

 Var. rufa Bagnall. Houghton Woods. 



Porcellio laevis Latreille. 



Very abundant in manure. North Street, and under bones 

 of whale in the garden at Wilber force House, Hull. I have 

 also found it in garden refuse at Cottingham. 



Porcellio dilatatus Brandt. 



Among manure in company with the preceding, and in 

 outhouses at Wilberforce House. Among leaf mould, Pearson 

 Park, Hull. 



Porcellio ratkei Brandt. 



Cottingham Marsh. Identified by Dr. Collinge. 



Metoponorthus pruinosus Brandt. 



This species is almost always to be found in old straw and 

 manure, or at the base of hay and straw stacks. Hull, Hessle, 

 South Cave, Hornsea, Bridlington, Cottingham. 



Cylisticus convexus De Geer. 



In refuse and under rotting bags near the fish curing sheds, 

 Humber shore, west of Hull ; and among straw thrown over 

 the cliffs south of Bridlington. 



Armadilliditim vulgar e Latreille. 



Extensively distributed in the East Riding. Gardens in 

 Hull, beech woods at South Cave, Houghton Woods, Weedley 

 Springs, Cottingham, Boynton Woods, Bridlington, Hornsea, 

 Hessle, Sunk Island. 



Var. variegata Lereb. 



Rowley, Brantingham Dale. 



Armadillidium nasatum Budde-Lund. 



I have as yet only found this species in the greenhouses at 

 the West Park, Hull. 



The specimens referred to above are in the collections at the 

 Hull Museum. 



* See The Naturalist, 1915, p. 388. 



Naturalist, 



