200 Mr. E. Saunders' Synopsis of 



3. Megachile circumcincta, Lep. (PI. IX., figs. 4 — 4 a). 



Lep., Hym., ii., p. 335 ; Smith, Cat. Brit. Hym., 2nd 

 ed., p. 177. 



Face in the ^ clothed with bright ochreous hairs, in the J with 

 black. Thorax in both sexes with bright brown hairs. Abdomen 

 with ochreous-brown hairs on the 1st, 2nd, and 3rd segments, and 

 with black on the rest ; j without pale apical bands, as in the pre- 

 ceding; 3' with the front tarsi dilated, its 1st joint much longer 

 than wide, its sides straight and subparallel. 



3' . Head and thorax strongly pmictured ; face clothed with 

 pale ochreoiis hairs ; mandibles beneath produced into a rather 

 more prominent triangular tooth at the base than in the other allied 

 species, tridentate at the apex, the external tooth much the longest. 

 Anteimae with the ai)ical joint slightly dilated and flattened. Thorax 

 clothed with bright brown hairs, punctured, the hairs on the meta- 

 thorax and under the wings paler ; wings slightly dusky. Abdomen 

 somewhat shining, punctured, clothed on the three basal segments 

 with hairs of the same colour as those on the metathorax, and with 

 black hairs on the remaining segments ; 6th segment with its 

 apical crest deeply and narrowly emarginate, and its real apex 

 (beneath) semicircular ly emarginate, the angles of the emargina- 

 tion prominent and somewhat reflexed ; 7th segment with a strong 

 central tooth, visible ventral segments clothed with pale hairs ; 6th 

 segment (hidden) with the membranous wing at its apex less 

 developed, and not angulated at its sides, and the spines at the 

 sides differently shaped to those of either of the preceding (for geni- 

 talia, &c., see PL IX., figs. 4 — 4 a), Legs clothed with brown hairs ; 

 anterior coxae with blunt spines, with scarcely any apical pencil of 

 hairs ; anterior femora pale and concave in fr'ont, densely clothed 

 with hairs behind ; tibiae pale at the apex ; tarsi dilated, pale, 

 densely fringed, 1st joint elongate, nearly parallel-sided, 2nd joint 

 with a black spot beneath ; posterior tarsi with the basal joint 

 rather shorter than in Willughhiella. 



2 . Hairs of the face black ; mandibles shining, largely punc- 

 tured, groove very deep and long ; thorax and first three segments 

 of the abdomen densely clothed with pale but rather bright brown 

 hairs, as in the $ ; last three segments entii-ely clothed with black 

 hairs, without any pale fringe at the apex ; segments not impressed 

 at the base ; segments beneath with the scopa dark orange, that of 

 the two apical segments black. Legs with brown hairs. Length, 

 12—14 mm. 



Hah. Not uncommon but local, burrowing in sandy 

 banks, &c. F. Smith says that it usually lines its 

 burrows with rose leaves. I have taken it freely at Chob- 



