56 



[March, 



blown from tli;' base to the half-length nr thereabouts; jnst beyond the apex 

 of the clavus a pale brown cloud reaching from the dorsum about half-way 

 across the elytron. Abdomen above brown, the hind margin of the segments 

 broadly greenish-yellow. On each side of the prosternum a round black sjiot. 

 J.egs greenish-yellow, base of hind tibiae with a black point, claws blackit-h. 

 Genital valve triangular, about thiee times as long as the preceding segment, 

 with a small rounded notch at the apex. Saw-case five times as long as the 

 genital valve. 



Length 6'2 mm. 



Baih (U J i/ionds: 1915); two females. 



Most nearly resembles M. nassati/s Germ., from which it differs In 

 the colom'-imtterii of the elytra. 



Macropsis 2Jopuli, n. sp. 



(S . Upperside yellow-brown, in life inclining to reddish. Face greyish- 

 yellow with a sharply-defined black spot at the summit and, sometimes, four 

 black or brown points, one on each side just below the level of the unpaired 

 spot and two a little below the middle about equidistant from each other and 

 the side of the face. Pronotuni fuscous on the disc, the middle line sometimes 

 pale. Scutellum usually with a large black triangle on each side of the base. 

 Elytra: costa narrowly and the veins brown ; a suffused brown band, including 

 iutermediate m-cu, from Cu to K; appendix and apical cells sometimes brown. 

 Abdomen above black, pale at the base. Legd pale, hind tibiae with a black 

 point at the base. 



$ . Sometimes similar to, but paler than, the J ; more frequently apple- 

 green with the elytra suffused with pale reddish-brown along the dorsum and 

 termen. Abdomen wholly or in greater part pale. Genital valve twice as long 

 as the preceding segment, truncate-triangular with an angular notch in the 

 middle of its distal edge. Saw-case about four-and-a-half times as long as 

 llie genital valve. 



Length 4-25-5-33 mm. 



On Lomhardy poplar. Goring, Oxfordshire {E. A. Butler: August 

 1918). 



Most nearly allied to 31. fiiscinervis Boh. Notwithstanding a 

 certain amount of similarity of description, there is no need to confuse 

 the green female of M. populi with the ab. graminea of M. virescens ; 

 the latter lives on Sah'ces, is much jmler in colour, and seldom develops 

 reddish-browu colouring on the elytra. 



The following is a table of the British species of the genus : — 



1 (26) Crown short, but not linear. 



2 (19) Front edge of crown nearly rectangular, face flat. 



3 (4) Species entirely pale green; at most with a black point on the 



summit of the face virescens Fab. 



