2 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 74 



The type of Leptoda is Dexia gracilis Wiedemann, by designation 

 of Van der Wulp, 1891 ; I examined the type of this species and found 

 it to be identical with Dexia vertebrata Say. 



The type pf Melaleuca is Melaleuca spectabilis Van der Wulp, the 

 sole species; this appears to be the female of Dexia vertebrata Say. 

 which has a considerably different appearance from the male. 



The type of Euzelia was originally designated as Zelia wildermuthi 

 Walton, a species closely congeneric with vertebrata Say. The genus 

 was established by the mere designation of a type species, without the 

 mention of any characters. 



111. ZELIA POTENS Wiedemann 



Dexia potens Wiedemann, Auss. Zweifl., vol 2, 1830, p. 368. 



Leptoda potens Brauer and Bergenstamm, Zweifl. Kais. Mus., pt. 5, 1891, p. 4(X5. 



Two males, " Brasilien Coll. Winthem," marked as types and agree- 

 ing with description. These have a striking resemblance to the males 

 of the well-known Zelia vertebrata Say, which occurs widely in the 

 United States and as far south as Brazil. The differences may be 

 briefly stated in place of a lengthy description. Potens is much 

 larger, 16 and 18 mm.; the wings are strongly infuscated, especially 

 along the veins; the legs are entirely black, the femora (one speci- 

 men) yellowish-red on basal half. The second and third abdominal 

 segments are elongated and mostly transparent, even more so than in 

 vertebrata. The epistoma is more prominent and the third antennal 

 joint a little more slender. The female of this species, judging by our 

 northern form, must be very different in appearance, and I am of the 

 opinion that it will turn out to be the species -phaeoptera Wiedemann. 

 The very different abdomen in the female would at first sight make 

 this look improbable, but the thoracic pattern, wings, legs, and head 

 agree remarkably well. Only careful collecting in the region where 

 the species occurs can definitely settle this question. 



112. ZELIA PHAEOPTERA Wiedemann 



Dexia phaeoptera Wiedemann, Auss. Zweifl., vol. 2, 1830, p. 370. 

 Leptoda phaeoptera Brauer and Bergenstamm, Zweifl. Kais. Mus., pt. 5, 1891, 

 p. 406 (gen. ref.). 



Two females, " Brazilien, Coll. Winthem," marked as types and 

 agreeing with description; a third female agreeing, but not marked 

 as type, is retained for the National Museum, as we did not have the 

 species. It is labeled " Natt. Bras." They go well in the genus Zelia 

 Robineau-Desvoidy, differing from the type, vertebrata Say, mainly 

 in having the epistoma considerably more protuberant. 



Female. — Front 0.29 of head width at vertex, widening consider- 

 ably on the upper part, more gradually below; parafrontal, para- 



