290 LEPIDOPTERA OF NORTH AMERICA. 



JOSIA HiJBNER. 



Body generally nearly linear and cylindrical, varying in length 

 and stoutness. Palpi variable as to length ; in some species much 

 shorter, in others a little longer than the head ; third joint varying 

 from one-eighth to one-half of the length of the second. Antennae 

 of the male generally more or less pectinated, sometimes simple ; 

 of the female generally simple, occasionally serrated. Abdomen 

 extending as far as the hind wings, or beyond them. Legs mostly 

 slender ; hind tibiae very generally with four spurs of various 

 length ; middle pair wanting in a few species. Wings black, 

 generally narrow, adorned with yellow, luteous, or white stripes, 

 bands or spots. 



Group Thyrgis. 



Thyrgis Walker, 316. 



Fern. Body cylindrical, nearly linear, moderately long and slen- 

 der. Palpi a little longer than the head ; third joint linear, more 

 than half the length of the second. Antenna minutely serrated. 

 Abdomen obconical towards the tip, not extending beyond the 

 hind wings. Legs slender ; hind tibiae with four short spurs. 

 Wings broad, moderately long. 



1. J. trihuaa.^ Hiihner. Ephialtias tribuna Exot. Schmett. 24, 246, f. 491, 2. 



Luteous. Head, disk of the thorax and abdomen, with a dorsal 

 black stripe. Wings black. Fore wings with a luteous stripe at 

 the base and an oblique luteous band behind the middle of the 

 wing. Ilind wings with a broad luteous stripe. 



Cuba. 



Walker. 



DIOPTIS HtJBNER. 



Body cylindrical, slender, generally long and linear. Palpi 

 varying in length, not longer than the head ; third joint more or 

 less shorter than the second. Antennae of the male generally pec- 

 tinated, occasionally serrated or simple ; of the female sometimes 

 pectinated, more often simple. Abdomen extending as far as the 



