BRAZILIAN MUTILLA. 



47 



Stripe, all silvery- white pubescent; apical segment more or less yellowish pubes- 

 cent; legs with black pubescence, slightly mixed with pale, calcaria pale; the 

 four nude spots on second segment above yellow or orange-yellow ; venter fringed 

 at apex of the segments with pale pubescence. 



Chapada. This may not be correctly determiued, although it 

 agrees tolerably well with Smith's description. 



71. iti. spectabilis Gerst. (Archiv. f. Naturg., xl, 1873, p. 73).— ? .—Length 

 13 16 mm.— Same form as graphica Gerst. (No. 80), but differs as follows: the 

 cheeks up as far as the eyes are silvery pubescent, and a subarcuate silvery or 

 pale golden band on vertex from eye to eye ; the silvery ochraceous pubescent 

 stripes on thorax do not reach the posterior margin of protborax and are not 

 interrupted at base of metathorax ; the pubescence of the legs is mostly pale, 

 while in graphica it is mostly black, except on coxte and femora beneath ; abdo- 

 men beneath more thickly clothed with whitish pubescence; the smooth spots on 

 second segment above are often more or less red or orange-red ; otherwise the 

 two species are very much alike. 



Chapada. Common. Compared with compar Andre, this spe- 

 cies is larger, and segments 2-5 have each a silvery pubescent spot 

 on apical middle. 



72 I»I. biviltata Gerst. (Archiv. f. Naturg., xl, p. 72).- ?. -Length 15-16 

 mm.— Head transverse, not broader than thorax ; eyes rounded, convex, polished ; 

 thorax rounded on sides anteriorly, gradually narrowed to apex, unarmed, the 

 anterior margin straight, the lateral angles obtuse, sides notched immediately in 

 front of the metathoracic spiracles ; metathorax rounded above, rather abruptly 

 declivous behind, the flanks excavated and polished ; first abdominal segment 

 small, transverse and subnodose at apex ; the four nude spots on second segment 

 above' transversely rounded, sparsely punctured, the anterior pair smaller, ovate ; 

 apical segment longitudinally rugose ; first ventral segment with a prominent 

 truncated carina on middle, the second segment deeply and sparsely punctured, 

 and subcarinate on basal middle. 



Velvety black, the pubescence black ; two narrow stripes on head between the 

 eyes, a narrow continuous stripe on each side of thorax, extending from near 

 anterior margin of mesotborax to apex of metathorax, lower portion of flanks of 

 metathorax, spot on each side of first abdominal segment, extreme lateral mar- 

 gin of second, a spot on lateral apical margin of segments 2-4 and sometimes 5, 

 and a spot on apical middle of 3-5 forming a central stripe, all dense silvery- 

 white pubescent ; cheeks and legs with scattered pale glittering pubescence, that 

 on four posterior tibite more or less black ; calcaria pale ; the nude shining spots 

 on second segment above orange-ferruginous ; the venter with pale pubescence, 

 dense on apical margin of segment 2-4. 



Chapada. 



73. M. estrella 9 .—Length 12-14 mm.— Very closely allied to bivittata, 

 but at on'ce separated by the thorax not being notched before the metathoracic 



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



