CHARLES W. HOOKER. 73 



Flavous, more or less tinged with red, and coated with fine short 

 pubescence. Face and occiput flavous, vertex black; ocelli large, 

 prominent, well separated, black with outer ring of yellow. Antennas 

 fulvous to fuscous, as long as the body ; eyes large, emarginate ; cly- 

 peal foveae distinct, mandibles bidentate, tipped with black — in one 

 specimen the face is dark red — mesonotum flavo-fuscous, frequently with 

 three longitudinal fuscous stripes; mesopleurse smooth and polished, 

 yellow, varied with red ; scutellum sulphur-yellow. Metathorax with a 

 weak anterior transverse carina, in front of which it is smooth, behind 

 finely reticulate ; wings hyaline, stigma yellow, nervures slightly fusc- 

 ous ; discocubital cell usually with two maculae, one large and sub- 

 triangular, with a short appendix, the other small, irregular, frequently 

 indistinct, sometimes lacking ; radial vein lightly narrowed near the 

 stigma, thickened beyond, discocubital vein arcuate or in some cases 

 angled, not sinuate, nervulus interstitial to well postf ureal ; nervellus 

 broken far below the middle. 



Legs usually slightly lighter than the body, claws pectinate ; abdo- 

 men with the two basal segments linear ; usually fuscous beyond the 

 fourth segment. Ovipositor short, 2 mm., male claspers rounded. 



In describing this species I have examined thirteen 9 and 

 eight d^ specimens. 



Type. — Location unknown. 



Fabricius' description is so incomplete that determination 

 has hitherto been doubtful. In determining and redescrib- 

 ing this species I have used specimens determined by Mr. 

 E. T. Cresson and Cameron's figure of a wing — which agree 

 — as well as the various descriptions, Cresson notes that 

 E. flavus is slightly smaller than aibensis, with the abdomen 

 shorter and not so slender, the membranaceous spots nearest 

 the tips of the discocubital cell very small and indistinct. A 

 large series, however, shows that none of these differences 

 are fixed. It is closely related to E. cubensis and E. coyicolor, 

 but is readily recognized by the differently shaped maculae, 

 which appear quite fixed. The type of E. appendiculatus Felt 

 shows what the figure and description of the wing* intimate, 

 namely, that it is a synonym of E. flavus. Dr. Felt remarks 

 that appendiculatus is evidently southern in habitat but fails 

 to recognize it as flavus, which is seldom taken far north — 

 probably because that species is so little known and its de- 

 scription is so incomplete. 



* N. Y. State Museum, Bull. No. 76, p. 113, pi. 2, fig. 4, 1903. 



TRANS. AM. ENT. SOC. , XXXVIII. (10) 



