18 E. T. CRESSON. 



ratlier large, ovate, flatly convex, distinctly netted ; thorax elongate, laterally 

 compressed, slightly narrowed medially, coarsely confluently punctured above; 

 nietathorax obliquely truncate behind, the lateral apical margins serrate; flanks 

 of thorax excavated and shining; abdomen ovate, first segment not very broad, 

 but gradually vcidened behind and sessile with base of second segment; ajiical 

 segment convex, smooth and shining. 



Head black, occiput, cheeks and face lieneath antennae clothed with pale glit- 

 tering pubescence; top of vertex generally with two pale golden spots; mandi- 

 bles more or less, often the basal half of antennaj, including the two tubercles at 

 base, and the thorax ferruginous; legs vary from black to ferruginous, clothed 

 with pale pubescence, calcaria whitish ; abdomen black, clothed above with short 

 black pubescence, thinly interspersed with longer hairs, which are pale at base 

 and sides of abdomen; first segment ferruginous, with a spot of ochraceous pu- 

 bescence on lateral apical margin, remaining segments with two silvery-ochra- 

 ceous stripes, narrowed and subinterrupted before reaching apex of second seg- 

 ment, where it forms a triangular spot, occasionally these stripes are interrujited 

 into spots, except on base of second segment, where they are always entire, the 

 stripes on this segment resembling exclamation points ( ! !) ; ventral segments 

 fringed at apex with pale pubescence, the second segment always ferruginous, as 

 is also occasionally the whole of venter and sides of dorsal segments. 



Chapada. Closely allied to lineola, hut the apical margin of 

 second abdominal segment is not handed, the spots on each side 

 showing no disposition to become confluent. Specimens will doubt- 

 less occur with the thorax, legs and abdomen ferruginous and only 

 the head black. 



This may be biliaeipunctata Spin. 



8. M. «livi<lua 9- — Length 8.5 mm. — Closely confluently punctured ; head 

 quadrate, slightly broader than thorax, not narrowed behind eyes, posterior an- 

 gles rounded, posterior margin of cheeks carinate; eyes rounded, convex, smooth 

 and polished; thorax .short, broad, fiddle-shaped, anterior angles sharp, acutely 

 toothed oil each side before the middle; nietathorax rounded above, abruptly de- 

 clivous behind, lateral margins dentate, flanks deeply excavated, smooth and 

 shining; abdomen ovate, first segment broad at apex, gradually widened poste- 

 riorly, sessile with and conforming in outline with base of second segment; ven- 

 ter shining, deeply and rather sparsely punctured. 



Head velvety-black, mandibles, except tips, ferruginous; an oblique spot be- 

 hind each eye and the cheeks silvery pubescent; thorax entirely ferruginous, the 

 pubescence pale, except above, where it is mixed with black, a patch of silvery 

 pile on lateral excavation; legs brown, with pale glittering hair ; calcaria pale; 

 abdomen velvety brown-black, the pubescence at base, sides and apex pale; a 

 narrow median stripe extending from middle of first segment to apex of fifth, 

 a triangular spot on sides of second segment and the lateral apical margin of 

 segments 2-5, all silvery pubescent ; venter ferruginous, with pale pubescence. 



Chapada (May and November). Two specimens. Separated at 

 once from all the other species by the narrow central silvery stripe 

 on entire length of the abdomen to apical segment. 



