Stainforth: The Guests of Yorkshire Ants. 391 
is common wherever he has searched for it in Northumberland 
and Durham. The species is widely distributed throughout 
Europe and occurs even in North America. Its association 
with ants seems to have been recorded very early, as Tullberg,* 
writing of the species, says that O. Fabricius (1783) found it in 
Norway ‘under stenar tillsammans med réda myran.’+ Cyphod- 
erus is a bustling little beast and difficult to catch, even with 
a camel hair brush and a tube of alcohol, as he quickly dis- 
appears out of sight. This horror of light he holds in common 
with all his white subterranean associates. 
Campodea staphylinus is abundant everywhere in dampish 
places, under stones, under pots in greenhouses, among decaying 
vegetation, etc. The name, however, as used here, probably 
covers a number of species; as Bagnall, who is now working 
at the Campodeidae, has already demonstrated that several 
closely allied Campodeas exist in the north of England. 
Scutigerella spp. are also similarly distributed. Under the 
name immaculata have -been included several closely allied 
species. It is of course, possible that certain forms of Campodea 
and of the Symphyla may be normally associated with ants. 
I have found Scutigerella together with Campodeas and D. 
flava at Kelsey Hill, Weedley, North Cave, and Holme-on- 
Spalding-Moor. At South Ferriby, in North Lincolnshire, 
the same association is to be found not only with D. flava 
but also with D. nigra. 
In the mounds of D. flava at Weedley I noted the abundance 
of two species of earthworm. The Rev. Hilderic Friend, to 
whom | sent them, tells me they are the Green Worm, A/lolo- 
bophora chloritica and the Mucous Worm, A. mucosa (Eisenia 
rosea). There were also a number of Diplopoda which I have 
not yet had determined. 
About twenty-five beetles of the ‘indifferently treated 
lodger’ class have been recorded for Britain, and of these the 
following eleven species have so far been noted in Yorkshire :— 
Microglossa pulla Gyll., Scarborough, Studley, West Ayton, 
Wetherby. 
Oxypeoda formiceticola Mark., Scarborough. 
O. haemorrhoa Sahl., Scarborough. 
Dinarda mdrkeli Wies., Scarborough. 
Homalota parallela Man., Scarborough. 
Batrisus venustus Reich., Studley. 
Trichonyx mdrkeli Aub., Scarborough. 
Ptilium myrmecophilum All., Scarborough. 
Myrmetes piceus Pk., Scarborough, York. 
* “Sveriges Podurider,’ Kongl. Sv. Vet. Akad. Handl., Bd. 10, 1871, 
NO: NOM pass: 
+ ‘Under stones, together with red ants.’ 
1915 Dec. 1. 
