60 ACADEMY OP NATURAL SCIENCES 



rection to the inner angle of the wing, and interrupted by the 

 nervures into five compartments; the three larger [44] cellules 

 of the hinder margin, with the exception of the margins of the 

 nervures, hyaline ; a hyaline rounded spot occupying the exterior 

 half of the central cellule, with a smaller spot on each side of 

 it ; sometimes obsolete or double ; above this central cellule, and 

 near the costal nervures, are two double distant small hyaline 

 spots; tip of the wing hyaline, the two nervures margined with 

 blackish, the margin of the superior one is generally interrupted 

 in the middle ; tergum reddish-brown, covered with black hair, 

 first segment with cinereous hair each side of the scutel ; second 

 and third segments with each four small white spots on the pos- 

 terior edge, the lateral ones on the former linear ; fourth with but 

 two, the lateral being obsolete ; fifth with a transverse line each 

 side, sometimes crossed by a longitudinal line extending on the 

 posterior segments, and exhibiting a cruciform mark, these marks 

 and dots have a silvery brilliancy. 

 Length seven-tenths of an inch. 



This species seems to come nearest to Meigen's second tribe^ 

 but it difi"ers by having an additional cellule under the large 

 central cellule of the wing. I labelled it in my cabinet with the 

 Fabrician name of capucina, but I cannot identify it with the 

 somewhat detailed description which Meigen quotes from Fabri. 

 cius, nor yet with Pallas's description of the caloptera, that both 

 Meigen and Wiedemann quote, and regard as synonymous with 

 the capucina, which they believe to be a native of Europe. [45] 

 That our insect is totally different from the caloptera no one 

 will for a moment doubt, for the latter is no larger than the 

 morio, whereas our insect is nearly equal to the cerherus in size. 



In deference therefore to the opinion of the authorities above 

 referred, I describe this species as distinct, though it seems pro- 

 bable that Fabricius had this species in view when he referred to 

 North America as the native country of the capucina. 

 [This is A. Sirason Fabr. — Sacken.] 

 4. A. ANALis. — Black ; wings hyaline at tip ; tail silvery. 

 Inhabits Georgia. 



Body deep black ; wings brown- black opaque, posterior third 

 hyaline ; anterior and intermediate tibia piceous on the upper 



[Vol. III. 



