378 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxxi. 



groove of the mesosternuin partly concealed by the clothing, appar- 

 ently rather broad and extending back about half the- length of the 

 plate; scutelhini with a slight median groove not perceptible on the 

 postscutelhim; between tliesc two plates, projecting forward from 

 the latter, is a fringe of verj- short lnow n hairs; dorsum of the median 

 segment well clothed with many black iiaii's of medium length; with 

 a rather pronounced median depression, deepest about two-thirds the 

 length of the plate from the front; fovea a rather elongated crescent; 

 dorsum and posterior end of the median segment nearly at right 

 angles; posterior end and sides thickly covered with long black hairs; 

 pleura and sterna )»lack, with long Idack hairs, except above the middle 

 coxa', where it is ((uite glabrous; petiole short, stout, straight; its 

 length, as compared with the second and third hind tarsal segments, 

 ))eing 28-45-33. 



xihdomen. — I^arge, stout, high, rismg shar})ly from the petiole; ite 

 first, second, and all but the posterior margin of the third dorsal plate 

 reddish ferruginous; the rest black, somewhat sericeous; the next to 

 the last dorsal plate with quite numerous punctures and a few short, 

 black hairs at the sides; the teiininal plate with a rather large, shallow, 

 median depression near its base; its posterior edge rounded, somewhat 

 truncated in the middle, and its posterior half with numerous coarse 

 punctures and black hairs beneath; the tirst two and the anterior cor- 

 ners of the next two plates reddish ferruginous, the others ))lack; the 

 surface not sericeous; with a few scattered punctures anteriorly, 

 increasing in a))und;'nce postei'iorly, and with a few short, black hairs 

 on the sides of the more posterior plates; the terminal plate closely 

 covered with short, erect, brownish and blackish hairs; its sides some- 

 what rounded, its end quite truncate; tips of the protruding genitalia 

 ferruginous. 



Wii^gs. — Strongly yellow (reddish at the base) to the ends of the 

 cells, the outer margins somewhat fuliginous; second recurrent vein 

 of the fore wing joining the cubital vt'iii in the second cubital coll near 

 the second ti'ansverse cubital vein; the distance from the second trans- 

 verse cubital vein to the third on the radial vein but little more than 

 that from the former to the second recuri'cnt vein on the cul)ital vein; 

 the tirst transversecubital vein l)en(ling somewhat into the second cubital 

 cell; the cubital and sut)discoidal veins beyond the cells are fuliginous 

 and there is a darker streak of the same be^^jnd the end of the radial 

 cell; the cubital vein of the hind wing continues nearly straight from 

 the junction of the median and trans\'erse median veins, the discoidal 

 being not <|uite interstitial; the cubital \'eiii is well developed l)(\voiul 

 the transverse cubital, which joins it almost at a right angle, being 

 itself Old}' slighlh' curved; teguhe black. 



Legs. — Black, except the fore femora beneath, where they are fer- 

 ruginous, and the middle femora beneath, where there is a trace of 



