394 Stainforth: The Guests of Yorkshire Ants. 
south, but occurring in Leicestershire and near Liverpool. 
In one case, that of the rare Myrmaecia plicata Er., the ant 
host, Tapinoma evraticum does not occur in Yorkshire, any 
chance of finding the guest being thus precluded. 
A number of spiders may be placed in this class, except that 
the phrase ‘hostile persecuted lodgers’ should rather be 
‘hostile persecuting lodgers.’ Muicariosoma festivum C.K., 
occurs with F. rufa, F. sanguinea, F. fusca, Donisthorpea 
fuliginosa, D. nigra and D. brunnea. On October 16th I came 
across dozens of immature examples (identified by Mr. W. Fal- 
coner) of both sexes in a chalk quarry at South Ferriby in 
North Lincolnshire in a nest of D. nigra, within sight of the 
Yorkshire shore. lt seems to have been taken only once in 
the county, Mr. W. P. Winter recording it for Wilsden.* By 
some, this spider is not looked upon as a true myrmecophile, 
but I feel confident from my own observation that Donis- 
thorpe’sf estimation of the relationship between this spider 
and the ants, near or with which it is found, is the correct 
one. The examples at South Ferriby were mingled with the 
ants, and were not at all dissimiliar to them in appearance. 
Hahnma helveola E.S., also occurs in association with a 
species of ant, D. fuliginosa, and has been taken in the Hudders- 
field and Bradford districts. An association of Harpactes 
hombergi Scp., with the same ant has been noted by Wasmann 
and Donisthorpe. It has also occurred with Formica fusca. 
I have taken this spider fairly frequently during the year in 
various parts of the county as at Selby, Hessle, Hornsea, 
Houghton Woods, and Holme-on-Spalding-Moor, but on no 
occas sn have observed any close association with ants. This 
species appears to be uniformly distributed throughout the 
county’ in suitable places. Syedra innotabilis Camb. and 
Microneta viaria Bl.,are said to occur with F. rufa and D. 
fuliginosa, the former apparently being only recorded for 
Skelton in the north-east ot the county, while the latter is 
widely distributed in Yorkshire, and has occurred in Holderness, 
the Wolds district, Scarborough, Huddersfield and Leeds. 
Personally I have not observed any association with ants. 
SPIDER, ETC. ANT-Mrmics.—-A number of spiders fall into 
a special class, including species that mimic ants in form and 
movement. Donisthorpe (loc. cit.) says that ‘ they hunt their 
prey in the neighbourhood of ants’ nests, and are protected 
from outside enemies by their resemblance to ants.’ There is 
only one common English species which falls under this cate- 
gory, namely Micaria pulicaria Saund. On October 17th I 
took a specimen and observed others in a nest of D. migra at 
* “The Spiders of the Bradford Area,’ 1908. 
* “Notes on Myrmecophilous Spiders,’ Zool., 1908, p. 423. 
Naturalist, 
