72 fMaroh, 1909. 



4. Hind femora red. Tegulse in ? black (or, .see. King, black with a white spot). In 



the $ Klug describes the tegulie as " white entirely," and the white on the 

 abdomen as " nearly but not quite wanting " cinffilfum, Kl. 



— Hind femora black, or black and white (not red!). Tegulse white in both 



sexes 5. 



5. All the coxjE, tlie labrum, and parts adjoining it, and the margin of the prono- 



turn white. In the <? the abdomen may be black entirely, or sti'eaked nar- 

 rowly with white (the relic perhaps of an original white 5tli segment as in 



the $ ) cingulatus, Lep. 



= togatus, F. {nee Pz.). 



— The four anterior coxae, the whole head, and pronotum black ductus, L. 



6. Antenna; stout at the base, short (about half as long as the body), setiform, the 



lower margins of the joints noticeably convex (viewed laterally) 7. 



— Antennae much longer and more slender, filiform or nearly so II. 



7. Abdomen banded with red 10. 



— Abdomen entirely black or dark violaceous 8. 



8. Hind femora testaceous. Body violaceous-black. Trochamters white. Tibiae 



red. Hind tarsi black or fuscous. The humeral cell in the hind-wing ends 

 a little in front of the areal nerve. In the ? the 2nd medial nerve (and 

 sometimes also the radial nerve) is interstitial, and the stigma is parti- 

 coloured (yellow at base, and fuscous at apex), but I do not find these 

 characters in any of my <? specimens melanarius,K\. 



— Hind femora not red, for the most pai't black 9. 



9. Coxae, mouth parts, and edge of pronotum white cingulatus, $ . 



— Coxae, &c., as above, black cinctus, <J . 



10. Hind trochanters white. Red abdominal band usually occupies at least 3 com- 



plete segments rufocinctua, Retz. 



— Hind trochanters black. Usually only two complete segments are red. (A 



rather smaller insect than the preceding) calceatus, Kl. 



11. Humeral area in hind-wing reaches right up to the areal nerve (" not appendi- 



culate."). Hind tibiae with sharply contrasting clear white basal halves and 

 black apical halves (no part of them testaceous). The other tibiae also with 

 white bases, but their apices red. Femora red. Abdomen black. Antennae 

 somewhat thickened in the middle ; normally ringed with white over several 

 joints near the apex, but at least in the <? ^ they are sometimes entirely 

 black. Tegulse in all my British specimens yellow, though Klug describes 

 them as black. No doubt, as both Thomson and Cameron state, the character 



is vai'iable , braccatus, Gmel. 



(= tibialis, C). 



— Humeral cell in hind- wings ends before the areal nerve ("appendiculate"). Hind 



tibiae testaceous in the middle, whitish (but not clear white) at the bases, 

 and only narrowly black at and near the apices. Femora red. Tarsi black. 

 Antennae quite slender and filiform throughout ; not white-ringed in any 

 specimen that I have seen of either sex. (But see below " Notes on the 

 Species.") Wings with costa, and apices of some other veins, testaceous, 

 the stigma, and the rest of the neuration black, or dark brown 12. 



