44 E. T. CRESSON. 



mesothorax posteriorly, metathorax except a broad black median stripe and a 

 slender one on either side of it, flanks of metathorax, coxse, spot on each side of 

 first abdominal segment, lateral margin and apical corners of second segment, 

 spot at sides of segments 3-5, triangular spot on apical middle of 4 and 5, some- 

 times a dot on apical middle of 2 and 3, most of apical segment, and apical mar- 

 gin of ventral segments 2-5, all densely golden ochraceous pubescent ; second 

 segment above with four nude orange-yellow spots; calcaria pale; legs and 

 venter clothed with pale golden ochraceous pubescence. 



Rio de Janeiro (November) ; Minas, Car. ; San Salvador, Per- 



nambuco (August). 



64. M. inermis Klug (Nova Acta C«s. Nat. Cur., x, p. 317, pi. xxiii, fig. 4). 

 — 9. — Length 13-15 mm. — Head transverse, as broad as thorax, subquadrate 

 when viewed in front; eyes small, round, convex and polished, placed near pos- 

 terior margin of head, but widely removed from base of mandibles; thorax 

 subquadrate anteriorly, gradually narrowed behind mesothorax, sides unarmed ; 

 a short deep groove with carinate edges on each side at base of metathorax, the 

 latter rounded above and obliquely declivous behind ; first segment of abdomen 

 small, subnodose. the second large, convex, the smooth spots sparsely punctured 

 and shining, as is also the segment beneath. 



Velvety black; head and anterior half of thorax entirely black with black 

 pubescence; posterior margin of mesothorax, confluent with two broad stripes on 

 metathorax, and the flanks, entirely pale golden pubescent; the legs with pale 

 golden pubescence, calcaria pale ; sides of segments 2 and 3, and the whole of 

 segments 4 and 5. pale golden ; second segment with two very large, irregularly 

 rounded, smooth orange-ferruginous spots a little behind the middle, and two 

 smaller spots of same color on basal margin ; venter with sparse pale hair, fringed 

 at apex of segments 2-4. 



Rio de Janeiro ; Minas, Car. Four specimens. Resembles 4- 

 notata Klug, but the thorax is unarmed. I had named this hand- 

 some species optabilis, all the specimens having the head entirely 

 black and the two red spots on posterior part of the second ab 

 dominal segment much larger than represented in King's figure, and 

 quite as large as those in ^-wototo; they, however, donot differ from 

 a specimen, labelled inermis Klug, kindly sent me by Mr. Ernest 

 Andre. 



65. M. dorsovittata ?. — Length 10 mm. — Head small, transverse ; eyes 

 small, round, convex, finely netted ; thorax with large coarse punctures, sub- 

 compressed and gradually narrowed posteriorly, anterior angles rounded, sides 

 not dentate ; abdomen ovate, with large deep punctures on second segment, 

 which is gibbous at base above; first segment small, narrow, quadrate, de- 

 pressed; apical segment finely longitudinally aciculate. 



Velvety black, with long erect or suberect black hair; head in front and 

 cheeks golden ochraceous ; a narrow stripe on disk of thorax extending the en- 

 tire length, the flanks except upper margin, a spot on first abdominal segment 



