198 Mr. E. Saunders' Synopsis of 



$ . Head closely and largely punctured ; face densely clothed 

 with pale ochreous hairs ; mandibles whitish or pale towards the 

 apex on their inferior margin. Antennae with the apical joint more 

 or less dilated and flattened. Thorax closely punctured, densely 

 clothed with fulvous-brown hairs, those of the metathorax rather 

 paler ; wings with a sUght apical cloud. Abdomen closely and 

 finely punctm'ed, each segment densely clothed with erect fulvous 

 hairs, and with a narrow apical band of shorter, paler, decumbent 

 hairs, the pubescence of the apical segments darker and browner ; 

 apical crest of 6th segment emarginate, and with a deep fovea in 

 the emargination both on the dorsal and ventral sides ; actual apex 

 of the segment largely and semicircularly emarginate, angles of the 

 emargination slightly prominent ; 7tli segment rarely visible, its 

 apex truncate ; ventral segments finely punctured, only four visible ; 

 1st, 2nd, and 3rd densely clothed at the apex and sides with long 

 pale hairs ; 4th produced at the apex and truncate, its apical mar- 

 gin pale and submembranous ; 5th with a suboval, pale, rugose, 

 scale-like patch in the middle, extending from the base and pro- 

 jecting to slightly beyond what would appear to be the natural 

 apex of the segment ; 6th segment narrow, membranous, except 

 at the sides ; apex produced into a narrow truncate wing, the angles 

 of the truncature considerably produced at the sides ; on each 

 side of the segment, above this membranous wing, is a tuft of hairs 

 or spines, with their apices reflexed at an acute angle (this segment, 

 under a microscope, is a most beautiful object) ; 7th segment, 

 except at the sides, so thinly membranous that I have been unable 

 to remove it, and cannot describe its form ; 8th tongue-like, small, 

 its base with a projecting tooth on each side (for genitalia, &c., 

 see PI. IX., figs. 2—2 6). Legs black, covered with golden brown 

 hairs ; front coxse with a long blunt spine on each, terminating in 

 a sharp pencil of hairs ; anterior femora and tibise pale in front and 

 beneath, the former densely clothed with long hairs ; tarsi largely 

 dilated, white, fringed beneath with long white hairs ; 2nd joint 

 with an oblong brown spot near its lower margin ; posterior femora 

 slightly thickened, and the tibiae of the same pair of legs much 

 thickened and curved ; tarsi dilated at the base. 



2 . Head and thorax closely punctured, clothed with golden 

 brown hairs ; mandibles largely flattened in front, with a long deep 

 groove terminating between the apical tooth and the next one to it. 

 Antennae with the apical joint slightly compressed, but not dilated. 

 Abdomen punctm-ed, clothed on the basal segments with pale 

 golden brown hahs, on the remainder with erect black hairs ; each 

 segment at the apex with a hne of short decumbent pale hairs ; 6th 

 segment slightly carinated in the naiddle towards the apex ; beneath 

 with the scopa composed of nearly white hairs on the 2nd segment, 



