132 [June, 



9. Sciitellum of 9 black. Apex of ^ abdomen above not produced into a distinct 



process 10. 



— Scutellum of ? pale. Apex of ^ abdomen above distinctly produced 12. 



10. Antennae not longer in either sex than the abdomen and half the thorax. Two 



basal segments of abdomen black above, the others fasciated more or less 



with black f similator, Forst. 



(monticola, C). 



— Antennae as long as the whole body, or even longer 11. 



11. Sligma rich deep yellow, large and almost semi-circular. G-round colour bright 



testaceous. Vertical area about twice as broad as long myosotidis, F. 



— Stigma whitish and more pointed at apex. Ground colour ochreous. Vertical 



area quite thrice as broad as long segmentarius, Forst. 



{pulchelluSf C). 



12. Hind tibiae of ^ entirely black. ^ with black mesopleurae, and antennae as long 



as the body hortensis, Htg. 



(tibialis, C). 



— Hind tibiae of $ pale, except at apex. $ with antennae shorter than the body, 



and usually with the mesopleurae brownish-yellow (not black). The ground 

 colour of the insect is green in life, but fades after death to ochreous-y allow... 



virescens, Htg. 

 (viridescens, C). 



13. Whole body almost entirely black above (only extreme margins of abdomen 



pale in $ ). The J has black mesopleurae melanaspis, Htg. 



{lacteus, C, maculiger, C). 



— Body in ? mostly pale above, variegated with mere streaks or spottings of black. 



The <J S are often darker, but at least the mesopleurae are pale 14. 



14. A small pale species distinguishable at once by the extremely short vertical 



area — its length hardly exceeding the diameter of an ocellus !... 



curH>tj)inis, Thorns. 



— Vertical area much longer 15. 



15. The frontal area bears three little abbreviated carinula?. One, often indistinct, 



runs from the middle of the transverse frontal ridge towards the anterior 

 ocellus. The others, usually pretty well-marked, radiate diagonally from 

 the anterior ocellus towards the insertions of the antennae. (This character 

 is apt to disappear when the insects shrivel up alter death, but if it can be 

 recognised it suffices to determine the species). The <J differs from all other 

 rteroni in having its produced ventral apex broadly truncate, and even 

 somewhat emarginate. The $ coloration is variable, lut it seems always to 

 have an entirely pale scutellum, and this will distinguish it from some very 

 similar species, while it may be known from ethers by the saw-sheath, which 

 is rather long, and as seen from above nearly equally broad throughout 

 (The cerci are small, hence Thomson named this species microcercus, but this 



character is not peculiar to it) oligospilus, Forst. 



{miliar is, $ , C). 



