232 Annals of the Carnegie Museum. 



Habitat : — Colombia, Don Diego in Department of Magdalena. 



Brazil, Corumba, in Matto Grosso, May, one female and parts of 

 four others. 



All the specimens collected by H. H. Smith, and in the Carnegie 

 Museum, Pittsburgh. 



153. Micrathyria dythemoides sp. nov. 



(Plate VII, fig. 135.) 



cT. Face and lips pale greenish-yellow, lateral labial lobes with a 

 mesial (inner) black margin, one-sixth as wide as the lobe itself, and a 

 narrower anterior black margin ; free edge of labrum narrowly black ; 

 frons superiorly and vertex metallic-blue ; occiput brown above, pale 

 green behind, with a median vertical brown line ; rear of head black- 

 ish-brown with two yellowish spots behind each eye-margin. 



Hind lobe of prothorax slightly, but distinctly, bilobed in dorsal 

 view. 



Thoracic dorsum brown, a narrow yellowish antehumeral stripe on 

 each side, distant at its upper end (which does not reach a transverse 

 yellow stripe in front of the antealar sinus) from its fellow of the op- 

 posite side by 1.5 mm., and at its lower end by 2.5 mm. ; the above- 

 mentioned transverse yellow stripe confluent at its outer (lateral) end 

 with a slightly wider complete sinuous yellow humeral stripe. Sides 

 of the thorax predominantly greenish-yellow with three brown stripes, 

 decreasing in width from before backward, the first bordering the 

 humeral suture posteriorly, the second on the obsolete first lateral 

 suture, the third on the second lateral suture ; none of these three 

 brown stripes forked, or anastomosing with each other. 



Abdomen predominantly brown, becoming darker posteriorly ; the 

 following greenish-yellow : most of 1 and 2 ; a longitudinal stripe on 

 each side of the dorsum of 3-7, reaching from the anterior end of 

 each to nearly the entire length of 3 ; half of 4, one-third of 5 and 

 less of 6 and two-thirds of 7, less than half as wide as the side of the 

 dorsum on which it lies on 3-6 but on 7 so widened as to cover three- 

 fourths of the width and to be separated from its fellow of the opposite 

 side by the mid-dorsal carina only. 



Superior appendages broken, brown. Inferior appendage slightly 

 longer than 9 f io(= 1.6 mm.), triangular, its apex one-fifth as wide 

 as its base. 



