BRAZILIAN MUTILLA. 39 



52. M. belliila 9 .—Length 10-13 mm. — Head narrower than thorax ; eyes 

 rounded, verj- convex, smooth and polished ; thorax quadrate anteriorly, rapidly 

 narrowed posteriorly, longer than broad ; metathorax abruptly truncate behind, 

 lateral margin serrate, flanks excavated and tuberculate above; abdomen ovate, 

 first segment very broad, sessile with base of second segment, scarcely constricted 

 at tip, the apical margin narrowly depressed like a band, anterior face of the seg- 

 ment l)r«adly flattened ; second segment above covered with rows of short, longi- 

 tudinal carina; ; apical segment finely punctured. 



Black, opaque, pubescence coarse and black, that on face, cheeks, under sur- 

 face of body and legs silvery white; a broad stripe on each side of head above, a 

 narrow uninterrupted stripe on each side of thorax above, extending from an- 

 terior margin of prothorax to apex of metathorax, spot on each side of basal seg- 

 ment of abdomen and sides of segments 3 5, all of silvery-white pubescence; lower 

 portion of flanks of metathorax silvery ; second segment of abdomen above with 

 an oblique yellow spot on each side of its middle portion ; calcaria white. 



Cluipada. (April to November). This may be obliquata Klug, 

 but the head above has two silvery stripes and those on the thorax 

 are entire. 



53. M. larvala Klug (Nova Acta Cfless. Cur. Nat., x, p. 310, pi. xxii, fig. 6).— 

 9 ■ — Length 17 mm. — Form robust; head large, quadrate, not broader than thorax, 



broad behind eyes, lateral posterior angles rounded, the sides beneath sharply 

 carinate, unarmed ; eyes small, round, very convex ; thorax ratlier short, coarsely 

 sculptured, fiddle-shaped, constricted in front of the prominent metathoracic 

 spiracles, anterior angles acute, a long acute incurved spine on each side of meso- 

 thorax immediately in front of the con.striction ; metathorax rounded above, al)- 

 ruptly declivous behind, where the surface is depressed and almost smooth, 

 lateral margin subserrate, the flanks beneath the constriction deeply transversely 

 excavated, smooth and polished; legs robust, tibise strongly spined; abdomen 

 ovate; first segment short and broad, anterior face broad and flat, the apex de- 

 pressed band-like, sessile with base of second segment and serrate anteriorly, 

 second segment sparsely covered with short longitudinal carinae, the two rounded 

 nude spots shining, not large, placed slightly behind the middle, and having a 

 few scattered short longitudinal carinse on their surface; apical segment not 

 flattened, roughened at base; second ventral segment strongly and sparsely 

 punctured, pinched and longitudinally carinate ou basal middle. 



Velvety black, the pubescence short and black, with longer scattered black 

 hair; a round spot behind each eye, another on each side of mesothorax pos- 

 teriorly, a short stripe on each side of metathorax at base, lower margin of flanks, 

 a transverse spot on each side of first abdominal segment at apex, a broad stripe 

 on extreme lateral margin of second segment, and a band or spot on each side of 

 segments 3-5, all of dense appressed silvery-white pubescen^-e ; legs with pale 

 pubescence, calcaria white ; the two smooth spots on second abdominal .segment 

 above pale yellowish ; apical margin of ventral segments 2-5 narrowly silvery 

 and fringed with white pubescence. 



Santarera. Two specimens. 



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



