

184 Annals of the Carnegie Museum. 



since seen the type; the Quillota male differs from the more detailed 

 of the above descriptions (de Selys') as follows : Pterostigma sur- 

 mounting the whole of one cell, n postnodals on the front wings, 9 

 on the hind ; thoracic dorsum uniformly dark red with no indications 

 of bands ; sides reddish-yellow without bands. Abdominal segment 7 

 red as in 6, 8-10 yellowish-red, only the middle of the hind dorsal 

 margin of 10 blackish adjacent to a median excision, the curved 

 margin of which is elevated into a dorsal process, which viewed from be- 

 hind shows a truncated tip nearly half as wide as the maximum width of 

 10. 10 is a little more than half as long as 9 in dorsal view, the superior 

 appendages about one-and-one-third times as long as 10, butshorter than 

 9. The outer margin of each appendage is convex and curved inward 

 (mesad) at the apex ; inner margin slightly widened to one-fourth of 

 the length, thence narrowed to two-thirds' length, where a strong tri- 

 angular tooth projects inward almost at right angles, and is hardly 

 distinct on its distal side from the rounded apex of the appendage. 

 Viewed from behind, each superior appendage shows a supero-internal 

 basal process, ending in a black tip applied against the corresponding 

 process of the other side almost within the tenth segment itself. In 

 profile view each superior appendage is directed caudad and slightly 

 downward in its basal half, slightly upward in its extremity, thicker at 

 the immediate base, then rather abruptly slenderer, gradually thick- 

 ening to three-fourths' length, from which point the lower margin is 

 truncated caudad and upward to the subacute apex. 



Inferior appendages in profile view reaching to a little more than the 

 level of half of the superiors, tapering rapidly in the basal half; distal 

 half forming a rather slender process, which is curved moderately 

 upward and ends in an acute tip. 



Costal edge of the pterostigma the longest on all the wings. Vein 

 A (= inferior sector of the triangle of de Selys) separating from the 

 hind margin of the wings at (front), or a little distal to (hind) the 

 cubito-anal cross-vein (= basal subcostal of de Selys). M 2 (= nodal 

 sector of de Selys) arising on the hind wings at the fourth (left), or 

 between the fourth and the fifth (right), postnodal. 



8-9 spines in the anterior (outer) row of the third tibia. 



Abdomen 26.5, hind wing 18 mm. 



An immature male from Penco is perhaps of the same species, but the 

 appendages are distorted, so that some doubt remains. It has the 

 pterostigma yellow, grayish in the center, surmounting less than one 





