DIPTILON. 229 



oehreous streaks conjoined behind ; tegulae, patagia, and dorsum of 

 thorax with brownish streaks ; legs streaked with yellow and black, 

 the hind tibiae and tarsi orange ; abdomen black with some yellow 

 and brown hairs, the first three segments with dorsal yellow patches 

 and their ventral sui'face oehreous white. Fore wing hyaline, the 

 veins and margins narrowly black. Hind wing black with the fold 

 and tuft white. 



Hab. Argentina, La ilioja (Giacomelli), 1 <$ type. Exp. 24 

 millim. 



805 b. Diptilon proleuca. (Plate XII. fig. 11.) 



Diptilon proleuca, Druce, A. M. N. H. (7) xv. p. 462 (1905). 



d 1 . Head, thorax, and abdomen black slightly shot with blue ; 

 palpi in front, sides of frons, a line behind eyes, two spots on back 

 of head, sides of tegulse, patches on pectus, coxae, and streaks on legs 

 white ; patagia with slight brown streaks ; red marks on shoulders ; 

 abdomen with the gi'eater part of 1st segment, the 2nd, and part of 

 3rd white, sublateral white spots on 4th and oth segments, some 

 oehreous in anal tuft below. Fore wing yellowish hyaline, the 

 veins and margins black. Hind wing black, the underside white, 

 the tuft of hair yellowish white. 



Hab. Venezuela, Caura Valley (Klages), 1 3. Exp. 28 

 millim. 



806. Diptilon halterata. 



9 . Head, thorax, and abdomen dark brown ; palpi yellow, except 

 3rd joint ; frons white ; antennas whitish at tips ; guise yellow ; 

 back of head with pair of yellow spots ; prothorax with pair of 

 yellowish spots, the meta thorax whitish ; pectus with some yellow ; 

 fore coxse white, the legs streaked with yellow ; abdomen with the 

 three basal segments yellow with brown dorsal spots, the other 

 segments with narrow yellow bands, the ventral surface yellow, 

 Fore wing hyaline, the veins and margins narrowly brown ; a slight 

 orange streak below costa and some yellow at base of inner margin ; 

 an oblique brown discoidal bar ; the underside with the veins and 

 discoidal bar orange-yellow. Hind wing small and rounded, the 

 costal half reduced to a small contorted lobe ; hyaline with the 

 veins and termen dark, inner margin yellow; the underside with 

 the costal lobe yellow. 



Paraguay, Puerto Eertoni (Schrotthy), This may be the 

 female of some other species, but the typical male occurs in the 

 same locality. 



*808«. Diptilon crassa. (Plate XII. fig. 12.) 



Diptilum crassum, Zerny, Iris, xxvi. p, 123 (1912). 



S . Head, thorax, and abdomen black-brown : antennae with some 

 white on shaft near tips ; palpi except at tips, patches on shouldej'Sj 



