360 SYNTOMID^. 



795. Argyroeides magon. (Plate XIII. fig. 20.) 



Argyroeichs magon, Schaus, P.Z. S. 1892, p. 276. 

 Argyroeides gyas, Druce, A. M. N. H. (G) xviii. p. 32 (1896). 



fj . Black ; coxae whitish ; abdomen with the constricted 2nd 

 segment yellowish above and below, the terminal segments slightlj' 

 fringed with white hair ventrally. Fore wing yellow hyaline, the 

 veins, and margins narrowly, black. Hind wing hyaline, the veins, 

 and margins narrowly, black ; the lobe small. 



Hah. Brazil, Sta. Catharina, 2 S . Exp. 26 millim. Typet in 

 Coll. Schaus. Type f gyas in Coll. Druce. 



*796. Argyroeides hadassa. (Plate XIII. fig. 29.) 



Trichura hadassa, Druce, P.Z. S. 1883, p. 379 ; Kirby, Cat. Het. p. 154. 



2 . Head, thorax, and abdomen black ; pectus and coxae Avith 

 patches of blue ; abdomen with dorsal and lateral series of metallic 

 blue spots, ventral surface with white patches on first two segments 

 followed by paired spots, the 1st and 4th pairs large. Fore wing 

 yellowish hyaline, the costal and inner areas tinged with orange ; 

 the veins and margins narrowly black, the terminal band expanding 

 slightly towards apex and below vein 2. Hind wing hyaline, the 

 \eins and margins black ; the terminal band expanding on apical 

 area. 



Hab. Ecuador, Intaj (Buckley). Exp. 44 millim. Type f in 

 Coll. Druce. 



Genus DIDASYS. 



Type. 



Didasys, G-i-ote, Can. Ent. vii. p. 1 74 ( 1875) belce. 



Proboscis well developed ; palpi upturned, the 2ncl joint reaching vertex of 

 head, the 3vd well developed and obtuse ; antennte bipectinate, with long 

 branches, dilated at extremity and ending in a bristle, short in female ; tibiie 

 with the spurs moderate ; abdomen with large lateral tufts on last two segments, 

 the claspers of male with very long tufts. Fore wing with vein 3 from before 

 angle of cell ; 4, 5 from angle ; 6 from upper angle ; 7, 8, 9, 10 stalked, 7 given 

 off nearer the apex than 9 ; 11 from cell. Hind wing with the cell very long; 

 vein 3 from well before angle of cell ; 4, 5 well separated at origin ; 6 from 

 slightly below upper angle. 



797. Didasys belae. 



Didasys helce, Grote, Can. Ent. vii. p. 175 (1875); Kirby, Cat. Het. 

 p. 135. 



S . Head and tegulae scarlet ; palpi with the 3rd joint black ; 

 frons with white lateral points ; antennfe black ; thorax and legs 

 black strijied with white ; some scarlet on sides of thorax ; abdomen 

 scarlet, with lateral black spots on 1st segment and dorsal series of 

 small spots, the tufts on claspers black, ventrally whitish with 

 black bands except the first two segments ; wings hyaline 

 the veins and margins black. Fore wing with scarlet patch at base 



