234 HVMENOPTERA ACUI.EATA. 



A. albicans, Kirh. — Black ; head and thorax finely and 

 closely punctured in the $ , more coarsely in the ? ; face 

 in the $ clothed with pale fulvous, in the ? with white 

 hairs, antennse in the $ reaching to about the propodeum ; 

 thorax in the $ entirely clothed with fulvous hairs, which 

 are brighter and redder on the mesonotum, in the ? with 

 the mesonotum, scutellum and postscutellum very densely 

 clothed with bright fulvous red hairs, the propodeum and 

 underside of the thorax with white, wings subhyaline, pro- 

 podeal area well-defined and clathrately rugose ; abdomen 

 shining, punctured, more coarsely so in the ? , clothed with 

 a few scattered pale hairs along the sides, sixth segment, 

 dorsally, testaceous at the apex in the $, and with the 

 seventh clothed with golden hairs, fifth entirely and sixth 

 at the sides, in the ? densely clothed with bright fulvous 

 red hairs, sixth triangularly raised in the centre of its 

 glabrous portion, beneath in both sexes with the segments 

 fringed with pale hairs, apical segment in the $ densely 

 pubescent : legs black, clothed with golden hairs, inter- 

 mediate tarsi in the $ and the posterior tibiaa and tai-si in 

 both sexes clear testaceous, the tibias in the c? often with 

 a more or less extensive dark spot. 



L. 10—11 mm. 



A very distinct species recognizable at once by its 

 punctured abdomen, with its bright red apex, and clathrate 

 basal area of the propodeum ; generally distributed and very 

 common in spring ; one of our earliest species, it frequents 

 various flowers, especially Sallows and Dandelions. 



A. pilipes, Fah. — Black, clothed with black hairs, those 

 of the thorax especially in the $ , generally more or less 

 sooty grey ; head and thorax rugosely punctured, face in 

 the $ densely clothed with long black hairs, wings smoky 

 brown, darker at the apex, propodeum with a well-defined 

 triangular clathrate area ; abdomen shining, the segments 

 rugosely punctured throughout, impressed along their 

 apical margins, more or less clothed with black hairs, 



