120 



[June, 



dorsal shield completely covering tail. C<»-)u'c//'s rocum^ieiit. IimIT the length of 

 the hind tar.si. Leys, mid and hind coxne voljiist. hind til)iae not verv much 

 dilated, with about 20 sensoria ; lengths of hind leg: trochanter + f«^'mur 

 •34 mm., tibia "48 mm., tar.sus + claw -IC) nun. 

 Total length 2 mm., breadth 1 mm. 



Apterous Male (of A. j^olifffoni). — Smaller and more rlt>pn'ssi'd tlian the 

 female. Antennae black, segment III with about 20 secondary si-nsoria, 

 IV with 13; proportions of segments, 15, 16,65,44 (30+31); totnl length 

 •8mm, Abdovien very rugose, markedly free from hairs; sides of abdomen 

 more parallel than in the female. Coniicles as in female. Dorsal shield does 

 not appear to completely cover the cauda, but that may be due to the shrinkage 

 of the specimen. 



Total len<^-t]i To uini. 



Fig. L^Brachycolvs frequens. A. Apterous oviparous?. B. Antenna. Asiyi- 

 cla2)his adjuvans. C. Apterous oviparous $ . D. Antenna. E. Antenna of 

 male. 



On Zi/copsis arvensis, near Fleetwood, jLancashire (^. adjuvans), 

 and on Poli/gonum aviculare, near Newcastle {A. polygoni). 



Gillette's A. polygoni must come very near Walker's species, if it is 

 not the same. I can find no difference between A. adjuvans and 

 A. polygoni either in Walker's colour-description or in structural details, 

 and so reduce the latter to a synonym. This will not necessitate a 

 change in Gillette's name.. 



I 



