BRAZILIAN MUTILLA. 51 



distinguished by the pubescent stripes ou thorax being golden and 

 broadened on each side of mesothorax, where they are slightly 

 curved inward and narrowed to a point ou prothorax ; the subapical 

 transverse smooth yellow spots or lines on second segment of abdo- 

 men above are rather broader and slightly turned up on the inner 

 ends ; the abdomen beneath has only two whitish pubescent bands. 



79. M. vivata 9.— Length 10-14 mm. — Head transversely subquadrate, 

 broader than thorax; eyes small, smooth, convex, removed from posterior mar- 

 gin quite their diameter; face broad, cheeks carinate but not toothed; thorax 

 short, broad in front, narrowed behind mesothorax, sides not constricted or 

 notched, metathorax round and abruptly declivous behind ; upper half of flanks 

 of metathorax flat, smooth and shining; abdomen short ovate, first segment sub- 

 nodose, depressed above, the apex narrowly constricted ; the smooth spots on 

 second segment sparsely punctured, shining; pygidium finely longitudinally 

 aciculate; second ventral segment strongly and sparsely jmnctured, shining. 



Velvety black, pubescent, with scattered, erect black hair, sides of face and 

 base of mandibles with pale pubest-ence; a slender silvery pubescent stripe on 

 each side of thorax above, reaching from apex of metathorax nearly to anterior 

 margin of prothorax ; lower margin of flanks with a patch of dense silvery 

 pubescence; legs black, coxae and femora beneath and base of tarsi with pale 

 hair, calcaria white; first abdominal segment with long pale hair; two small 

 oblong spots at base of second segment and two rounded spots between middle 

 and apex, smooth, shining and yellow; a spot on apical middle of segments 3-5, 

 a spot ou extreme apical sides of segments 2-4, extreme lateral margin of segment 

 2, and fringe on apical margin of ventral segments 2-4, all of silvery pubescence ; 

 apical segment entirely black. 



Chapada. Easily separated from all the species having four 

 smooth yellow or red spots on second abdominal segment, by the 

 broad subquadrate head. 



80. n. graphica Gerst. (Archiv. f. Naturg., xl, p. 74).— J .—Length 15-23 

 mm. — Head transverse when viewed from above, slightly narrower than thorax ; 

 eyes round, convex, polished, removed from posterior margin of head by about 

 half their diameter and nearly their diameter from base of mandibles; thorax 

 elongate, gradually narrowed behind mesothorax; deeply notched on each side 

 before base of metathorax, and slightly so on each side behind prothorax. the 

 intervening space rounded and obtuse; metathoracic spiracles prominent, flanks 

 deeply transvei'sely grooved, smooth and polished before base of metathorax ; 

 legs slender; abdomen oblong-ovate, first segment subnodose, the apex depressed, 

 band-like, and with a subapical row of small teeth ; the four pale spots on second 

 segment above smooth and polished, those at base narrow and longitudinal, those 

 toward the apex transversely subquadrate or ovate, not large, hut broader than 

 those at base; .second ventral segment deeply and coarsely punctured, shining. 



Velvety black, with scattered suberect black hair; a tuft of whitish pubescence 

 above base of mandibles, otherwise the head is black; two silvery pubescent 

 stripes on meso- and metathorax, more or less interrupted at base of the latter 



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



