BRAZILIAN MUTILLA. 38 



Black, sparsely hairy ; a transverse or triangular spot on head above, a slender 

 longitudinal stripe on disk of nietathorax, lower margins of prothorax, pleura 

 and nietathorax, basal segment of abdomen at sides and apex above, two small 

 round or ovate spots on second segment above near base, also a band at apex inter- 

 rupted on disk, its narrow lateral margin, and a narrow band near apex of sec- 

 ond segment beneath, all silvery-white ])ubescent ; apex of third and apical seg- 

 ments abo%'e and beneath more or less silvery in certain lights; calcaria white; 

 in one specimen the transversely triangular spot on head above is ochraceous. 



Chapada (January to Ajjril). Two specimens. 



40. W. felix 9- — Length 8 mm. — Much like cnlraria, but smaller and more 

 pilose ; face and most of head above densely pale ochraceous; a stripe on each side 

 of metathorax (no central stripe), sides of prothorax, most of first segment of 

 abdomen, broad band, interrupted medially, at apex of second segment, lateral 

 ni^ngin of same, a small longitudinally quadrate spot on each side of disk of seg- 

 ments 3-5, sides of same, and bands on venter, all silvery white ; no spots on base 

 of segment 2; apical segment and legs with silvery hair. 



Chapada (December). One specimen. 



41. M. criiNH. 9- — Length 11 mm. — Form slender; head coarsely, confluently 

 punctured, viewed from above transversely subquad rate, broader than thorax; 

 eyes rather large, ovate, finely netted ; cheeks not carinate beneath, but toothed 

 at the anterior extremity; thorax narrow, subcompressed. without spines or 

 teeth; metathorax gradually narrowed posteriorly; abdomen ovate, gibbous, 

 basal segment small, quadrate, depressed, very slightly widened posteriorly. 



Head, pro- and mesothorax velvety black, with black hair; pleura, metathorax 

 (except narrow longitudinal blackish strijie on disk) and basal segment of abdo- 

 men, pale golden or ochraceous pubescent; legs brown, with pale golden or och- 

 raceous pubescence ; calcaria whitish; abdomen black, two rather large rounded 

 spots of dark golden or cupreous pubescence at base of second segment, and two 

 quadrate spots of same color at apex of segments 2-5, large on 2 and diminishing 

 in size on 3-5; ventral segments and lateral margin of dorsal segments with sil- 

 very-ochraceous pubescence. 



Rio de Janeiro (October). One specimen. 



42. IW[. projectifrons 9-— Length 8-12 mm.— Very closely punctured, 

 more coarsely so on the head and thorax above; head transverse, subquadrate, 

 broader than thorax, occiput rather deeply emarginate, lateral angles obtusely 

 rounded, sharply carinate, the carina on each side extending to middle of cheeks 

 beneath and ending in a small acute tooth ; face transversely excavated, the front 

 overhanging or projecting like an overshoot, and armed on each side with a trans- 

 versely compressed divergent tubercle, the tip of which is subacute and somewhat 

 incurved ; mandibles long, acute at tip, the upper edge armed with a large acute 

 tooth about the middle; eyes small, rounded, very convex, smooth and polished ; 

 thorax a little longer than broad, short, fiddle-shaped, broader in front, deeply 

 constricted at lateral middle, anterior angles acute, two acute tubercles on lateral 

 margin in front of constriction, the anterior one much the largest and directed 

 backward ; metathorax rather abruptly truncate behind, lateral margins finely 



TRANS. AM. ENT. SOC, XXVIII. (5) JANUARY, 1902. 



