238 Annals of the Carnegie Museum. 



der, approximated, converging by a slight curve throughout, with very 

 acute spine-like apices ; in profile view thickest at two-thirds length, 

 where the inferior surface bears a small tooth, from which runs forward 

 a row of denticles along the outer edge of the inferior surface to within 

 one-third of the appendage-length ; distal third of the appendage 

 directed upward, apex very acute. 



Inferior appendage reaching to three-fourths of the length of the 

 superiors ; in ventral view its distal two-fifths is strongly contracted, 

 apex one-fourth as wide as the base. 



Anterior lamina slightly more prominent than any other of the gen- 

 italia of segment 2, its apex entire, slightly convex when viewed from 

 in front. Hamule hook-like, directed caudad, more prominent than 

 the genital lobe, which latter is wider than long. 



Wings with only the slightest tinge of ochraceous at the extreme 

 bases, on the hind wings greater, but reaching only one-third way out 

 to the cubito-anal cross-vein. Front wings with 8 antenodals, 7 post- 

 nodals, two postriangular rows increasing to three near the level of the 

 nodus. Hind wings with 6 antenodals, 8 postnodals. Other vena- 

 tional details on page 229. 



Abdomen 25, hind wing 24 mm. 



9 unknown. 



Habitat : Brazil, Minas Geraes, 1 cf. Museum of Comparative 

 Zoology, Cambridge, Mass. 



158. Micrathyria athenais sp. now 



d\ Lips yellow, free labral margin narrowly black; submentum, 

 mentum, middle labial lobe, inner (mesial) third, or more of lateral 

 labial lobes, black. Clypeus and inferior margin of the frons pale 

 green, remainder of frons and vertex metallic-blue. 



Thorax and abdomen blackish, pruinose ; indications of paler color 

 on the mesinfraepisternum. Abdomen narrowing to 4, thence widen- 

 ing to the hind end of 7 as usual in this genus. 



Superior abdominal appendages as long as 9 -f 10, black, in dorsal 

 view nearly straight, converging, apices acute ; in profile view directed 

 downward to four-fifths' length, where the inferior surface bears a 

 small tooth the proximal side of which bears a row of 4-5 denticles, 

 distal fifth directed upward, apex acute. Inferior appendage reaching 

 to nine-tenths of the length of the superiors, its apex in ventral view 

 one-fourth as wide as its base. 



