24 E. T. OKESSON. 



22. M. vereciinda 9- — Length 7.5 mm.— Same form as inlegella. Head 

 with silvery pubescence ; thorax ferruginous, the prothorax and a hirge irregular 

 stain on mesothorax black ; legs fuscous, calcaria jiale ; abdomen fuscous, the first 

 segment with a patch of whitish pubescence at apex ; second segment blackish 

 above, with a large, broad, elongate, ferruginous spot on each side, narrowed an- 

 teriorly and reacliing the basal margin of the segment ; extreme sides of second 

 segment and a dot on a])ical middle silvery pubescent; the apical segment more 

 or less silvery on middle above. 



Chapada. Oue specimen. Very much like integella, but the two 

 spots on second abdominal segment are much larger, longer and 

 ferruginous. 



23. M. \\'Ar\tyia, Gerst. (Archiv. f. Naturg. xl, p. 65). — 9. — Length 12-14 

 mm. — Closely but not coarsely punctured ; head very broad, transversely sub- 

 quadrate, occiput very deeply triangularly emarginate, posterior angles sharply 

 carinate ; cheeks finely punctured, closely so near the eyes ; face beneath antennae 

 deeply transversely excavated, the antennae inserted in the excavation, the front 

 with two prominent, porrect, well separated, slightly divergent tubercles over- 

 hanging insertion of antennae ; eyes small, suhovate, subconvex, smooth and pol- 

 ished, unusually distant from each other; mandibles long, sharp, with a large 

 stout tooth on upper edge before apex, and a curved groove on middle of upper 

 surface ; thorax short, subquadrate, about one and a half times longer than broad, 

 constricted laterally about the middle, where the margin issubtuberculate ; meta- 

 thorax abruptly truncate behind, the lateral margin carinate, but not serrate; 

 flanks of thorax impunctate; abdomen short, broad, ovate; first segment very 

 broad at apex and sessile with base of second ; pygidium broad, finely alutace- 

 ous, smooth at tip, with the edges reflexed. 



Black ; the pubescence above short, appressed and black ; cheeks sparsely 

 clothed with pale pubescence, the face beneath antennae fringed with long, pale, 

 glittering hair; mandibles red medially; antennae sericeous, scape piceous, with 

 pale pubescence ; a suboblique, silvery pubescent stripe on each side of head be- 

 hind eyes, slightly widened posteriorly, and on each side of thorax above a 

 silvery -ochraceous stripe, slightly broader on metathorax, and not extending be- 

 yond the verge of the truncation ; legs piceous. with pale hair, those on four 

 posterior tibiae above more or less black ; calcaria white ; abdomen at base, sides and 

 apex above with pale hair; a pale golden pubescent stripe begins on middle of 

 first segment and extends to apical fourth of second segment, and on each side 

 of the apex of this stripe there is a rather small subtransverse spot of same color; 

 apical middle of segments 4 and 5 above more or less silvery ochraceous; venter 

 shining black, with pale pubescence, especially on apical margin of the segments. 



Chapada. Compared with hacephala Perty, this species differs 

 chiefly in the posterior margin of the head being very much more 

 deeply emarginate, the lateral angles acute, the cheeks not armed 

 beneath base of mandibles, the thorax quite as broad in front as be 

 hind, and with a silvery pubescent stripe on each side above, and 

 the abdomen above is differently ornamented, having a central pale 



