270 THE ENTOMOLOGIST. 



The development of the images followed pretty speedily. 

 On the morning of the 6th of July I found two males had 

 come out; another appeared on the 7th, two on the 9th, and 

 so on up to seven, — these were all males : they were all much 

 smaller than the female I had taken on the lime-tree just 

 after she had deposited her eggs, or, to speak more precisely, 

 just before I saw the freshly-produced larvae; as to colour 

 and other characteristics they completely resembled the 

 females. 



The female in question is represented at fig. 7. Head and 

 thorax shining black, clad with a fine brown pubescence ; 

 mandibles ferruginous, with black tips. The antennae are 

 black, somewhat hairy ; the first two joints cup-shaped, not 

 very small ; the third nearly half as long again as the first 

 two joints together, ending obliquely at the apex; the fourth 

 not more than two-thirds of the preceding joint, the remainder 

 diminishing regularly in length and breadth ; the last joint 

 conical. 'I'he abdomen rather broad, shining black, without 

 hair. As regards the legs, the coxae and trochanters are 

 black ; the femora of the first pair black, with a rather broad 

 pale red spot on the knees ; those of the second pair have the 

 spot smaller; the femora of the last pair are entirely black. 

 The anterior tibiae are brownish yellow, white at the base ; 

 those of the second pair somewhat darker at the apex ; the 

 tibiae of the last pair are black, with the base obscure white ; 

 the tarsi are respectively of the colour of the tibiae to which 

 they belong. In the living insect the wings are purplish 

 black ; in the dead insect brown, with the exception of the 

 apex, which is white and transparent. In the second and 

 third submarginal cells are some black horny dots; the 

 anterior portion of the anal cell (area lanceolata) has an 

 oblique transverse nervure. The insect was only six mille- 

 raetres long, expanding to eleven millemetres. 



The males only differed in being much smaller (four 

 millemetres), having proportionately longer antennae, and in 

 having merely narrow white rings on the tibiae and tarsi of 

 the posterior legs. 



Ratzeburg considers that in favourable years this species 

 may produce three generations ; and I am quite of his 

 opinion. Supposing the first imagos to appear, in warm 

 seasons, in the beginning of May, then the second brood 



