190 UOMBYLIIDJE. 



sometimes convex only ; proboscis variable in length, often with- 

 drawn ; palpi small, thin. Antennae porrect, short, wide apart 

 at base ; 1st joint short, cylindrical ; 2nd short, wider at tip than 

 base ; 3rd forming an irregular elongate cone, with a longer or 

 shorter style,* separated from the 3rd joint by a distinct suture, 

 with a microscopic bristle at the tip. Thorax quadrate or short 

 oblong, with rounded corners, often with fan-like bunches of 

 distinct scales or scale-like bristly hairs in front, below the 

 humeri, around the wing-roots, on the pleurae, and occasionally 

 on other parts; scutellura broad, rather large, generally with 

 bristles on posterior margin ; metanotum concealed ; thorax and 

 scutellum generally with rather thick pubescence. Abdomen 

 slightly curved, longer than thorax, but often not greatly so, 

 oblong, in a few species almost obconical, usually with depressed 

 short pubescence and with transverse bands of scales or scale-like 

 hairs on dorsum and frequently on underside also, the pubescence 

 generally longer and thicker on each side at the base. Leys 

 rather long and always slender ; all tibiae without spinules ; tarsi 

 rather indistinctly jointed ; fore legs shorter, posterior legs 

 stronger and longer, in some species with scaly pubescence; 

 ungues small, generally with a small tooth at their base ; pulvilli 

 absent or vestigial. Wings with three submarginal cells ; often 

 a short space along the base of the costa with brilliant white or 

 coloured scales ; venation otherwise as in Hyperdlonia. 



Range. World-wide. 



It is probable that some of the characters admitted as generic 

 are more or less plastic, such as the distinctness of the tooth at 

 the base of the ungues, which Osten-Sacken claims to be always 

 present, even if very small. He also asserted that the front tarsi 

 are more tapering towards the tip in the cJ than in the $ , and 

 that "the length of the antennal style is variable, usually in 

 inverse ratio to the length of the 3rd joint." His characters 

 were drawn up on North and Central American species, a few 

 European and two Australian forms. I have not ventured to 

 include all these points as definite generic characters. 



Table of Species. 



1. First posterior cell closed 2. 



First posterior cell open t 3. 



1. Wings wholly bright yellow to beyond 



middle, a narrow brown band in apical f p. 192. 



P art favipennis, Brun., 



Wings yellow at base, with two broad 



brown bands, one before, one bayond, the [p. 193. 



middle flammea, Brun., 



* Exceptions occur. E. stupida, Rossi, a European species, has no distinct 

 antenna! style, the 3rd joint being a long tapering cone ending in a microscopic 

 bristle. Probably there are also other exceptions. 



t Often closed adventitiously in E. insulata. 



