52 E. T. CRESSON. 



(leaving an elongate spot on each side of niesothorax), scarcely reaching posterior 

 margin of prothorax ; lower margin of flanks densely silvery pubescent; legs 

 witb black pubescence, tlie coxse and femora with long pale hair, calcaria pale; 

 sides of first abdominal segment, spot on apical middle of segments 2-6, lateral 

 margin of the second, spot on sides at apex of segments 2-4, and apical margin 

 of ventral segments 2 and 3, of silvery pubescence ; sixth segment black, except 

 the discal pale spot above; the four smooth, polished spots on upper surface of 

 second segment yellow. 



Chapada, Corumba, Mararu, Paracary, Santarem. Common. 

 Varies considerably in size. 



Having sent, some years ago, a specimen of this species to Mr. 

 Gerstaecker, he informed me that it was an unnamed species be- 

 longing to the group of parcUlela Klug, and I therefore named it 

 Gerdaeckeri, and possibly the specimen, wherever it may be, is still 

 so labelled. Subsequently INIr. Ernest Andi-e advised me that it 

 does not differ from graphica Gerst. 



81. M. maiica 9 . — Length 10-15 mm. — Same form as graphica, but smaller, 

 '^he pale stripes on the thorax are not interrupted, and extend almost to the 

 anterior margin of the prothorax ; the pubescence of the legs, except on coxae 

 and femora, is black, and the calcaria are black or fuscous ; the two smooth 

 yellow spots on posterior part of the second abdominal segment are acutely ovate 

 and oblique, while segments 2 and 3 only have a white pubescent spot on extreme 

 sides at apex. 



Chapada. Varies much in size. 



82. 31. sodaliN ?. — Length 14-16 mm. — Very much Uke grapJiica ; but the 

 side of the thorax, between the two notches, is prominent and tubercnlate, the 

 pale stripes on the thorax extend only a short distance on niesothorax, where 

 they are dilated but not interrupted ; the tibiae and tarsi have more pale pubes- 

 cence ; the calcaria are black or fuscous ; the smooth yellow spots at base of 

 second abdominal segment are shorter and broader, being almost short ovate, 

 while the posterior two, although not larger than ■ those at base, are scarcely 

 transverse, but rounded or subquadrate; apical segment fuscous or black. 



Chapada. Differs from manca by the sides of the thorax, be- 

 tween the two notches, being more prominent and tuberculate ; 

 by the shorter pale stripes on the thorax, and by the different 

 shape of the smooth yellow spots on second segment of abdomen 

 above, which are oblique in manca. This species, or manca, may 

 prove to be sancta Gerst. 



83. M. optata 9- — Length 13-17 mm. — Shape and ornamentation of thorax 

 much as in sodalis, except that the space between the two lateral notches is not 

 so prominent; the thoracic stigmatic tubercles are very prominent; the tarsi are 

 densely pale sericeous, the calcaria pale; the smooth yellow spots on second 



