BRAZILIAN MUTILLA. 21 



Head velvety black, with black pubescence, clypeus with some yellowish hair; 

 scape fuscous; thorax houey-yellow, with golden pubes^cence, intermixed with 

 black; collar and narrow anterior middle of protlioras black, with black pubes- 

 cence; legs entirely honey-yellow; calcaria whitish ; abdomen black, with black 

 pubescence, except on pale portions; first segment dull honey-yellow on basal 

 half, witli long pale hair; second segment with a large lunate golden-testaceous 

 mark on each side of the middle, almost meeting on the disk, the inner lobe nar- 

 row and reaching base of the segment ; segments 3-6 with dense pale golden pu- 

 bescence; venter with pale pubescence, the first and basal middle of second seg- 

 ment honey-yellow. 



Rio de Janeiro (November). One specimen. Easily known by 

 the large black head, honey yellow thorax and legs, and the two 

 large pale yellow lunate marks on second abdominal segment. 



14. M. per$;rata 9 • — Length 8 mm. — Small ; head slightly broader tlian 

 thorax; transversely subquadrate, scarcely narrowed behind eyes; cheeks longi- 

 tudinally and acutely carinate beneath ; eyes rounded, convex, smooth and ])ol- 

 ished ; tliorax short, broad anteriorly, fiddle-shaped, above densely punctured, 

 longitudinally strigose on disk of metathorax ; anterior angles of mesothorax 

 acute, the posterior lateral margin with two short, blunt teeth ; lateral margin of 

 metathorax acutely dentate; Hanks of thorax smooth and shining; abdomen 

 ovate, about as long as head and thorax together, basal segment gradually widened 

 at apex, which is as broad as base of second segment; apical segment depressed, 

 smooth. 



Head black, with black ])ubescence, cheeks and face silvery sei'iceous; mandi- 

 bles and basal half of antennse ferruginous, apical iialf fuscous; thorax entirely 

 ferruginous, except a fuscous stain on disk of metathorax ; pubescence of thorax 

 above rather long, erect and blackish; legs entirely pale ferrugineous; calcaiia 

 pale; abdomen black, the erect pubescence on second segment above long and 

 blackish, that on the sides silvery ; third and following segments densely clothed 

 with silvery pubescence; on each side of second segment above a transversely 

 quadrate testaceous s)>ot, deeply indented anteriorly, giving the spot a sublunate 

 appearance; venter blackish, with pale pubescence, the second segment testa- 

 ceous, except apical margin. 



Rio de Janeiro (July). Size and form of parata, but differs in 

 the ornamentation of the second segment of abdomen, and in the 

 sculpture of the metathorax ; resembles bilunata in markings, but 

 otherwise very different. 



15. M. pavata 9-— Length 4.5-7 mm. — Small; head transverse, slightly 

 broader than thorax, narrowed behind eyes; cheeks longitudinally and acutely 

 carinate beneath ; eyes large, convex, smooth and polished ; thorax short, broad, 

 fiddle-shaped,densely con fluently punctured above, anterior angles acute ; lateral 

 margin of mesothorax with two acute approximate teeth ; metathorax abruptly 

 declivous behind, the lateral margins acutely dentate; sides of thorax deeply 

 excavated medially, smooth and shining; abdomen ovate, shorter than head and 



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



