AADREXID.E. 257 



elliptic in the ^ , ratlier more ovate iu the ? , sliiniug' 

 in both sexes, and clothed with rather remote long pale 

 hairs, the apices of the segments in the c? very strongly 

 depressed, smooth and impunctate, the rest of each seg- 

 ment remotely and shallowly punctured; in the ? the 

 puncturation of the segments is so vague as to be hardly 

 defined, and the apices of the segments are not so im- 

 pressed and smooth as in the c? ; the second, third, and 

 fourth segments in both sexes have a narrow apical band of 

 white hairs, that of the second and third more or less inter- 

 rupted, apical fringe in the ? brown, apices of the segments 

 beneath pale, densely fringed with white hairs, apical 

 valve in the ^ rounded at the apex ; legs densely clothed 

 with silvery hairs in the ^ , with brownish hairs in the ? , 

 floccus white, scopje fulvous brown, hairs of the inner side 

 of the posterior tibiae paler. 



L. 9-11 mm. 



Common in the sjjring, appearing in April. It is gener- 

 ally distributed, occurring both in Scotland and Ireland. 

 It will burrow into the hardest paths. 



A. argentata, Smith. — Very like a small albicrus at 

 first sight, the pubescence in both sexes being very similar 

 in colour and disposition ; but besides the much smaller 

 size of the present species, it may be easily known by the 

 somewhat shining mesonotum of the c?, and the clear 

 puncturation of the abdomen, which is very remote on the 

 basal segment, but close and fine on the others ; all the 

 segments have apical bands, which are much wider than in 

 alhicrus, and composed of longer hairs, and the surface of 

 the segments between the bands is nearly glabrous, the 

 band of the basal segment is very widely interrupted, and 

 that of the second slightly so, apical fimbria in the J golden- 

 brown ; scopas pale greyish-brown. 



L. 7-8 mm. 



Occurs in July and August on the Surrey and Hamp- 

 shire Commons, but has not been recorded from other 



