80 E. T. CRES80N. 



pointed at base, truncate at apex, third subniarginal obsolete. Legs blackish, 

 the pubescence pale; coxae and trochanters honey-yellow ; calcaria long, slender, 

 pale. Abdomen petiolate, shining black, thickly clothed, except on first and 

 basal half of second segment, with long dense appressed whitish pubescence, and 

 when viewed from the front the abdomen is densely silvery white j>ubescent be- 

 hind second segment ; first segment ferruginous above and beneath, blackish on 

 apical margin above; second segment feebly punctured, polished, basal middle 

 sparsely pubescent, sides and apex thickly so ; apex of second and following ven- 

 tral segments much less densely pubescent than those above; apical segment flat, 

 subquad rate, sparsely punctured, margined laterally, the two apical spines honey- 

 yellow. 



Chapada (October). One specimen. This agrees tolerably well 

 with Smith's description, except that the coxse are rather finely 

 punctured and not reticulated. 



M. valenca. 'J,. — Length 14 mm. — Deep black, opaque; head, pro- and 

 mesothorax and pleura closely punctured, with erect or suberect black pubescence, 

 except on mouth parts and pleura where it is pale, and longer on head and pro- 

 thorax ; metathorax rather coarsely reticulated, and with several large elongate 

 cells on basal middle, the pubescence long and pale; eyes and ocelli as in preced- 

 ing species. Wings fusco-hyaline, the base and a blotch at apex of second sub- 

 marginal cell hyaline; neuration much as in gracilescens, except that the second 

 submarginal cell is longer, and the subtriangular third is complete, except lower 

 portion of outer nervure which is indistinct. Legs brown black, thickly pale 

 pubescent; coxse pale sericeous tomentose ; calcaria pale. Abdomen black, shin- 

 ing, finely punctured ; first segment clothed with long erect pale hair; second 

 segment thickly pale pubescent on sides and apex, almost nude on basal middle ; 

 when viewed from above the abdomen has a broad band of dense appressed whit- 

 ish pubescence occupying apex of second segment, and 3 and 4 entirely, while the 

 following segments are rather thickly black pubescent; beneath, the second seg- 

 ment is smooth, shining, very sparsely and feebly punctured ; apex of segments 

 2 and 3 fimbriate with pale pubescence, behind these the pubescence is black ; 

 apical segment rounded, not margined laterally, the two apical spines honey- 

 yellow. 



Rio de Jauerio (November). One specimen. 



