370 STNTOMID^. 



*819. Eumenogaster eumenes. 



Eumenogaster eumenes, Herr.-Schaff. Aussereiir. Schmett. f. 423 (1856) ; 

 Kirby, Cat. Het. p. 153. 



Head, thorax, and abdomen black ; antennas whitish at tips ; 

 abdomen with lateral white streaks on first three segments ; wings 

 hyaline, the costal half yellowish hyaline ; the veins and margins 

 nariowly black. 



Hah. Eeazil. Exp. 34 millim. This species is unknown to me. 



Genus UEOLASIA, nov. 



Type, U. brodea. 



Proboscis present ; palpi upturned, reaching vertex of head ; antennje of male 

 bipeetinate with moderate branches, of female with the medial part of shaft 

 dilated and fringed with scales above ; tibiae with the spurs short ; abdomen 

 with the 2nd and 3rd segments slightly constricted, the terminal segments with 

 lateral tufts; anal tufts large. Fore wing with vein 3 from well before angle of 

 cell ; 5 from well above angle ; 7, 8, t>, 10 stalked ; 11 from cell. Hind wing 

 with vein 2 from towards angle of cell ; 3 and 5 from angle ; 4 absent ; 6, 7 

 from ujjper angle. 



A. Abdomen with opalescent bands on constricted segments, opalocincta. 



B. Abdomen with dorsal blue bauds brodea. 



*820. Urolasia opalocincta. (Plate XII. fig. 15.) 

 Urolasia opalocincta, Druce, A. M. N. H. (7) i. p. 404 (1898). 



(5 . Head, thorax, and abdomen black ; frons, gul^e, patches on 

 tegulse, patagia, coxae, and back of pectus metallic blue ; abdomen 

 with lateral opalescent bands on constricted segments, almost meeting 

 on dorsum, and silvery white ventral fascia ; sublateral silvery spots 

 on 5th and 6th segments. Fore wing hyaline, the veins, and mar- 

 gins rather broadly, black ; a blue point at base ; a discoidal black 

 bar conjoined to costa, the terminal band expanding widely at torn us, 

 black streaks in interspaces of terminal area. Hind wing hyjiline, 

 the veins black ; a terminal band wide at costa, narrowing to a 

 point before tornus. 



Hab. Cayenne, 1 d , 1 $ type fin Mus. Oxon. Exp. 40 millim. 



*821. Urolasia brodea. 



Syntrichura brodea, Schaus, J. N. York Ent. Soc. iv. p. 132 (1896). 



(S . Black ; palpi with white marks in front ; frons with lateral 



white stripes ; gulae, spots 

 on shoulders, and coxae white ; 

 thorax and legs with patches 

 of metallic blue ; abdomen 

 with blue bands above, the 

 ventral surface with broad 

 white stripe on basal half. 

 Fig. \9,\.— Urolasia brodea, J. \. Fore wing hjaline, the veins, 



and margins rather widely, 

 black ; a blue point at base ; a discoidal black bar. Hind wing 



