BRAZILIAN MUTILLA. 23 



Head black, with dense golden pile above aiid on face; thorax dark ferrugin- 

 ous, the spiracles yellow; legs fuscous, with pale hair; calcaria pale; abdomen 

 velvety black above, first segment fuscous ; two narrow silvery ochraceous i)ubes- 

 cent stripes extending from base of second segment to aj)ex of fifth, slightly 

 broadened posteriorly; venter with jiale pubescence. 



Chapada (April). One specimen. Recognized by the red thorax, 

 and tlie black abdomen with two long pale stripes;, much as in 

 bitceniata Spin. 



19. M. benevola 9. — Length 6.5-7 mm.— Form of mri<a<a; head fuscous 

 or black, more or less covered with pale golden or silvery pile; thorax dull ferru- 

 ginous, with a broad black stripe on each side, interrupted at base of metathorax 

 and forming a broad V-shaped mark thereon ; legs entirely honey-yellow; cal- 

 caria pale; abdomen black, sides more or less ferruginous; a large mark on 

 each side of second segment above rounded within and enclosing a black spot, a 

 broad apical band indented medially and confluent at sides with anterior mark, 

 and a broad transverse spot on disk of remaining segments, of dense golden pile 



Var.f— The black V-shaped mark on metathorax less distinct, and the golden 

 spots at base of second abdominal segment smaller and not enclosing a black dot. 



Santarem. Three specimens. The abdomen is ornamented much 

 as in pachycnemis Burm., which it resembles in form, but in that 

 species the head is entirely black. 



20. M. beatllla 9 • — Length 4-6 mm. — Form of invitata, but much smaller 

 and the head not so broad ; thorax marked much as in benevola ; sides of second 

 segment of abdomen, a broad apical band with undulate anterior margin, two 

 short oblique stripes at base widely divergent posteriorly, and the remaining seg- 

 ments entirely, except central brovynish spot, of dense golden pile; first segment 

 ferruginous, silvery at base ; venter ferruginous. 



Santarem. 



21. ]fl. integella 9- — Length 9 mm. — Head transverse, the eyes round, 

 very convex, polished, separated from posterior margin of head by a narrow 

 space; thorax rugose, slightly narrowed anteriorly and gradually so posteriorly, 

 the lateral margin not constricted, unarmed, anterior angles of prothorax acute, 

 metathorax abruptly declivous, the flanks excavated ; abdomen with first seg- 

 ment nodose, the second densely punctured and opaque; apical segment flat- 

 tened, longitudinally striated. 



Black; with scattered, erect black pubescence; head with appressed golden 

 pile; thorax ferruginous, the prothorax and spot on upper part of flanks black; 

 lower portion of flanks with a patch of silvery pubescence; legs fuscous, paler at 

 base, calcaria pale testaceous ; abdomen fuscous, darker on the second segment 

 above ; apex of first segment silvery, the second with two oblong, opaque, yellow- 

 ish spots; extreme sides of second segment silvery pubescent; apical segment 

 with golden pubescence. 



Chapada (April). 



TRANS. AM. ENT. SOC, XXVIII. JANUARY, 1902. 



