306 Mr. PT sccacke Synopsis of 
base. Membrane very dark, with a pale spot below the 
apex of the cuneus; second joint of the antenne in the 
é slightly thickened; apical joint two-thirds as long as 
the third, or more. Thighs spotted at the apex. 
Length 1¢ line. 
On ashes ; ; Chobham, Reigate, Dartford, &e. 
Narrower than varians, and distinguishable by the 
shorter third joint to the antenn, the very narrow pale 
base to the cuneus, and the clouded spot on the elytra, 
PLAGIOGNATHUS. 
I. Tibiw with strong black spines springing from small 
black spots. 
A. Tind margin of the head strongly carinated 
and slightly produced... oie .. Roseri, 
AA, Hind margin of the head not strongly cari- 
nated. 
B. Pubescence thick, black, and deciduous. 
a. First and second joints of antennex pale viridulus. 
b. First and second joints of antennz black arbustorum. 
BB. Pubescence thick, dense, and silvery -» albipennis. 
BBB. Pubescence fine, grey, and adpressed. 
C. Larger, a pale spot on each side of the head 
inside the eyes. 
a. Base of the elytra widely pale .. -. Bohemanni, 
b. Elytra entirely brown .. ar es nigritulus. 
CC. Smaller; head entirely dark.. at -- pulicarius. 
II. Tibie with fine hair-like spines not springing from 
black spots. 
a. Base of the elytra pale .. “- «. saltitans. 
b. Base of the elytra concolorous .. «- Wilkinsoni. 
1. albipennis, Fall. Fig. Hahn, Wanz. Ins. 1. fig. 177. 
é Elongate; suboval, ¢ green or blackish-grey, “densely 
clothed in Su ery-white hae Head, hone in front, 
scutellum, apex of the clavus, and a spot near the apex of 
the corium, sometimes darker. Cuneus pale at the base, 
darker at the apex. Membrane dusky, with a pale spot 
below the apex of the corium; thighs brown; tibi 
whitish, with large, thick, black spines. Antenne: first 
and second joints black, apex of the second and the third 
and fourth often yellowish. 
Length 14 line. 
On Artemisia mar itima, Hayling Island, and Artemisia 
absinthii, gardens, Reigate; common, 
