150 Annals of the Carnegie Museum. 



tive, being smaller than is often the case in this genus, not so elongate 

 mesad, and with no pale transverse occipital stripe between the right 

 and left spots. 



60. Argia tupi, sp. nov. 



(Plate IV, figs. 78, 78^.) 



d\ Rear of head chiefly black, a narrow yellowish stripe bordering 

 each eye and a narrow transverse superior yellowish stripe each side 

 immediately behind the black, which borders posteriorly each pale post- 

 ocular spot, the yellowish stripe subequal in width to this black. Pale 

 (violet) antehumeral stripe twice as wide as the black mid-dorsal. 

 Black humeral stripe a mere line in its upper two-thirds, but widened 

 at its upper end, in its lower third confluent with an oblique black 

 mesepimeral stripe. This latter stripe reaches to the upper margin of 

 the mesepimeron ; in its lower third it is half, or a little more than half, 

 as wide as the pale antehumeral. A black stripe on the whole length of 

 the second lateral thoracic suture. Abdominal segment 2 violet on 

 dorsum bounded on each side by a black stripe, which is widened 

 mesad at three-fourths' length and again narrowed before the hind 

 end of the segment, but does not meet its fellow of the opposite side ; 

 sides of 2 below this stripe yellowish, with the posterior two-thirds of 

 the inferior margin black ; 3-6 violet, with a black stripe on each side 

 beginning shortly behind the base of each segment and reaching to 

 the hind end and widened mesad to meet its fellow of the opposite 

 side in the hindmost fifth of 3, fourth of 4, two-fifths of 5, half of 6 ; 7 

 black, with a narrow transverse basal pale ring ; the lateral black of 3-7 

 encloses a longitudinal pale brownish or yellowish stripe the length of 

 which may be half, or more than half, of that of the. segment ; 8-10 

 pale (blue?) with an inferior black stripe on each side for the entire 

 length of each segment. 



Stigma of the front wings surmounting more than one cell ; of the 

 hind wings surmounting more than one cell (75 per cent.), two cells 

 (12.5 per cent.) or more than two cells (12.5 per cent.). 



Antenodal cells on the front wings 4 (87.5 per cent.) or 4 -f 

 (12.5 per cent.), on the hind wings 4 (87.5 per cent.) or 3 -f (12.5 

 per cent.). (Percentages here and in preceding paragraph based on 



4 c?.) 



9 unknown. 



Dimensions : d\ Abdomen 29.5-33.5 ; hind wing 23-26 mm. 





