72 EEV. J. E. HULL ON 



Ubiquitous. Halbert records a variety littoralis for 

 Ireland, probably a distinct species. 



ii6. Macrocheles plumipes, sp. nov. 67. 



Very like iiiarginatus in general appearance, but the 

 legs are shorter, especially the fourth pair. The 

 dorsal shield is completely margined with clavate 

 setae. Most readily distinguished by the tarsus of 

 the fourth pair which is comparatively short (4 

 times the length of the ambulacrum : in inargiiiatiis 

 6 times), with only three simple acute spines, the 

 rest, about 8 in number, being clavate and finely 

 but conspicuously plumose. 

 Ninebanks, in manure. 



117. Macrocheles ■tridentinus, Can. • 66,67. 



The only species with all the dorsal setse clavate. 

 It is, I think, the M. /^r/r//^ of Oudemans, but not of 



Halbert : certainly not tridentinus, Oudemans ! 

 Cheshire, Ireland. 



118. Macrocheles pisentii, Berl. 66, 67. 



Chopwell, from a nest of Formica rnfa. Ninebanks, 



moss. 

 Cheshire, dead leaves. 



119. Macrocheles glaber, Miill. 66, 67, 68. 



Very abundant everywhere in manure, and almost 

 always one of the passengers on Geotrupes, spp. 

 and other dung-beetles, along with various nymphs. 

 Berlese appears to identify it with badins, Koch, 

 which I think is a mistake. Oudemans, on the 

 other hand, seems to consider it identical with 

 Berlese's vagabiindus ! Though I have had 

 thousands of females under my eye, I have never 

 succeeded in capturing a male. This species and 

 Hypoaspis bonibicolens are the only (non-parasitic) 

 Gamasids I have met with ' travelling,' when 

 sexually mature, on insects, along with various 

 nymphs. 



