BRAZILIAN MUTILLA. 35 



margins finely serrate ; abdomen ovate, first segment broad, sessile with base of 

 second, and conforming in outline therewith ; pygidium rugulose at base, smooth 

 at tip. 



Black, clothed with black pubescence above; cheeks, face, scape of antennae, 

 thorax beneath, metathorax behind, and legs, with pale glittering pubescence; an 

 oblique stripe on each side of vertex, and two on tliorax above not reaching ante- 

 rior margin, of silvery pubescence; a silvery sericeous patch on lower margin of 

 flanks of thorax ; calcaria whitish ; a spot on each side of first abdominal segment 

 at apex, lateral margin of second, and the remaining segments, except a broad 

 median black stripe, of silvery pubescence ; second segment with two tolerably 

 large, rounded, punctured, opaque yellow spots; venter with pale pubescence. 



Corumba, Chapada. Very much like araxa, but smaller, the 

 thorax shorter and broader, and sides of metathorax not serrate. 

 In araxa the sides of the head behind the eyes and the cheeks are 

 pale golden, as well as the broad stripes on the thorax extending 

 the entire length ; while in turnalis there is an oblique silvery line 

 behind each eye and an abbreviated line on each side of thorax, 

 half way on meso- and metathorax. The sides of first abdominal 

 segment of turnalis has a white pubescent spot, and the sides of 

 segments 3-5 are broadly silvery, with a black central stripe; 

 while in araxa the first segment has some long pale hairs at base, 

 and segments 2-5 have three silvery stripes, one on the middle and 

 one on each extreme side. 



45. ]W. cnriosa 9- — Length 7 mm. — Small, densely, confluently punctured ; 

 head transversely quadrate, broader than thorax, scarcely narrowed behind eyes, 

 the posterior angles acute when viewed from above; eyes round, convex, smooth 

 and polished ; thorax broad, fiddle-shaped, an acute hooked spine on each side at 

 about the middle; metathorax rounded above, abruptly declivous behind, the 

 flanks deeply excavated, smooth and polished ; abdomen ovate, as long as head 

 and thorax together, first segment not nodose, not constricted at apex, but grad- 

 ually widened posteriorly, and sessile with and conforming in outline with base 

 of second segment; venter shining, sparsely punctured. 



Opaque black, head and thorax with erect black hair; mandibles, except tips, 

 ferr\iginous; clypeus silvery-sericeous ; cheeks, an oblique mark behind each eye 

 and meeting on posterior margin of occiput, two longitudinal lines on thorax 

 above reaching to tip of metathorax, but not extending on prothorax, and lower 

 part of flanks of thorax, all clothed with silvery pubescence; legs clothed with 

 pale glittering hair, calcaria whitish ; abdomen velvety black, basal segment, as 

 well as apex of metathorax, with pale hair; the sides of abdomen and venter 

 with silvery pubescence; two large ovate ferruginous spots, clothed with cupre- 

 ous pubescence, on second segment above, a rather broad median longitudinal 

 stripe of silvery pubescence beyond second segment, composed of spots on apical 

 middle of segments 3-5; pygidium pale ferruginous. 



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



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



