510 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.52. 



Occiput brown with twin yellow spots on its posterior surface. The 

 posterior surf ace of the head black. Labium pale brown. (See fig. 9 7.) 



Prothorax dark brown with a pale yellow spot on each side of the 

 posterior lobe and a pair of minute yellow spots just posterior to the 

 anterior lobe, also a yellow spot on each coxa and a smaller spot just 

 above each coxa. Front legs black with a yellow stripe occupying 

 the middle two-fourths of the ventral (internal) face of the femur. 



Mesothorax and metathorax dark brown with the following yeUow 

 spots : A triangular spot on the lower half of each mesepistemum, a 

 minute spot above this just below the antealar sinus, a second 

 minute spot in the antealar sinus. The sides of the thorax with four 

 large spots arranged in pairs obliquely; the anterior pair on the 

 mesepimeron, one in the lower anterior angle and its mate in the 

 upper posterior angle with a third and minute spot in the upper 

 anterior angle. The posterior pair of lateral spots are on the met- 

 epimeron, the lower spot in the center of the lower end and the upper 

 in the center of the upper end. Also a minute spot in the upper 

 end of the metepisternum. Coxae and middle and hind legs black. 

 Wings with a brownish tinge. 



Abdomen black with orange markings. Segment 1 with a brown 

 transverse dorsal band on its apex. Segment 2 with an anterior 

 S-shaped spot on each side and a minute spot on each side of the apical 

 end. Segment 3 with a wide V-shaped anterior spot on each side fol- 

 lowed by a mmutc spot just posterior to the vertical carina. Seg- 

 ments 4 and 5 with the V spot broken into a minute anterior arm and 

 a large posterior aiin which hes just anterior to the vertical carina. 

 A small dorsal spot just posterior to the vertical carina and a small 

 latero-apical spot. Segments 6 and 7 marked as are 5 and 6, except 

 that the latero-apical spot is wanting on both segments and the 

 minute anterior spot is wanting on 7. Segment 8 with only a large 

 antero-lateral spot representing the posterior arm of the V in the 

 anterior segments. Segments 9 and 10 black, but the intersegmental 

 membrane of 8-9-10 pale brown. Appendages black. 



Color of female. — Female colored as in the male, except that the 

 V spots of the male abdomen are represented on segments 2 to 7 by 

 a rectangle of orange occupying almost the entire space from the an- 

 terior end of the segment to the vertical carina and from the middorsal 

 line to the middle of the side. Segments 2-4 each with a pair of 

 minute dorsal spots just posterior to the vertical carinas, and a latero- 

 apical spot on each side. Segments 8-10 black, except the interseg- 

 mental membranes of 7-10, which are pale brown. (See fig. 98.) 



Male abdomen, 44 mm.; hind wing, 34. Female abdomen, 42 

 mm.; hind wing, 36. 



Structurally tliis species is characterized by its small size, the hairy 

 tubercle on the ventral side of the metathorax, the superior appen- 



