202 Mr, R. MacLachlan's Monograph of 



Legs full green ; tarsi brownish ; ungues brown, 

 strongly curved, the basal portion dilated and rounded. 



Wings elongate, subacute ; neuration full green ; the 

 costal and post-costal veinlets, the gradate veinlets 

 (usually) , those between the radius and the sector at the 

 upper end only, and several cubital veinlets, black ; 

 pterostigona elongate, dark : in the posterior wings the 

 post-costal veinlets are green. 



After death changes to greenish-yellow. 



Length of body 5-6 lines ; expanse of wings 15-18 

 lines. 



Moderately common in summer, and especially entitled 

 to the appellation of '' Stink Fly." 



I have not accorded to Stephens' name angustipennis 

 the right of priority, although his types are certainly the 

 species here described. My reason for not so doing is 

 that the word " immaculate " in his description is so 

 contradictory, that no one could possibly have recog- 

 nized the species from that description ; and I am 

 unwilling to drop Wesmael's name — by which the insect 

 is so well known. 



Hagen (Ent. Ann. 1858, p. 22), gives C. Eeydenii of 

 Schneider, {nigricostata, Brauer) , as a doubtful synonym 

 for angustipennis, but that species is very difi'erent. 



7. Chrysopa aspersa, Wesmael. 



Chrysopa aspersa, Wesm. Bull. Acad. Brux. 1840, 

 p. 210 ; Schn. Mon. Chrys. 112, pi. xxxvii ; Hag. Stett. 

 Zeit. 1852, p. 42, 1859, p. 412, Ent. Ann, 1858, p. 23 ; 

 Ed. Pict. Nevrop. d'Esp. 66. Hemerohius prasinus, Ramb. 

 Nevrop. 424 (1842). S. Ramburii, Costa, Faun. Nap. 

 14 (1855). 



Full green, front spotted with black. 



Head with the vertex inflated, nearly semicircular, 

 flattened, immaculate ; a lai'ge triangular black spot be- 

 tween the basal joints of the antenna ; front with a black 

 spot on the gense below each eye, and an elongate black 

 spot on each side of the clypeus ; palpi sharply annulated 

 with black and white ; antenna^- shorter than the wings, 

 pale grayish-brown, the two basal joints green, the first 

 sometimes with a faint dark mark above. 



Prothorax with a transverse raised line behind the 

 middle ; blackish-brown spots on each side of the middle, 



