The Woodlice of the Hull District. 153 



* The Marine Fauna of the Humber District and the Holderness 

 Coast,' Mr. T. Fetch, B.A., B.Sc* says it occurs ' in all the chalk 

 banks along the Humber.' Farticularly large examples occur in 

 crevices among piles and revetting at Saltend Common near 

 Hull, and under chalk lumps used for repairing the banks near 

 the same place. It is usually most abundant on the chalk 

 cranches which jut out into the Humber mudflats as at Hessle, 

 Paull, Cheiry Cob Sands, Sunk Island, et ceteris locis. I have 

 found it on the River Hull banks near Stoneferry, but the 

 specimens were strikingly smaller in average size than those 

 found on the more exposed shore of the estuary. It would be 

 interesting to determ.ine the range of this species along the tidal 

 rivers which enter the Humber., such as the Ouse, Trent and 

 Hull. At Saltend and nearer Hull I have often found it in 

 company with the estuarine aquatic isopod, Sphceroma nigi- 

 caiida Leach, reminiscent in its habit of rolling itself into a 

 ball of its terrestrial relatives, the Armadillidia. 



Trichoniscus piisillus Brandt. 



This species is common everywhere in dampish places, 

 among grass, moss, rubbish, etc., both in gardens, as in Hull, 

 and in the open country. I have collected it in all the sub- 

 divisions of the East Riding. 



Trichoniscus roseiis Koch. 



In Hull gardens and greenhouses this pretty pink species is 

 common. Examples can be found under stones, pieces of 

 wood, plant pots, etc., near the greenhouses in the Hull parks. 

 I have also found it in garden refuse at Hessle. 



Trichoniscus stebbingi Patience. 



One example among hothouse refuse at Hessle. 



Haplophthalmus danicus Budde-Lund. 



Common in heaps of leaf mould at the Pearson Park, Hull, 

 and in garden refuse at Cottingham. 



Oniscus asellits Linne. 



As commonly distributed as Porcellio scaber, and as common 

 in the centre of Hull among rubbish in outhouses as in the 

 wilder parts of the country as say Hotham Carrs or Houghton 

 Woods. It would serve no useful purpose to enumerate 

 localities. 



Philoscia muscorum Scopoli. 



A rather pretty species, variable in colour, and common 

 everywhere in gardens, fields and woods, and invariably 

 to be found among the refuse under hedges. It is abundant 

 among the grass on the Sunk Island embankment. I have 

 specimens from every part of the East Riding, including Hull. 



Platyarthrus hojfmannseggii Brandt. 



I have dealt with the distribution of this myrmecophile in 



* Tvans. Hull Sci. and Field Naturalists' Club, Vol. III., pp. 27-41. 

 1918 Mayl. 



