424 



PSYCHE. 



[December, 1902 



Males with no discal patch of special 

 scales. Egg: As much depressed above 

 as truncate below, the micropylic pit 

 relatively shallow, the central depressed 

 area including at least half of the entire 

 width. Caterpillar at birth : Head near- 

 ly or cjuite as broad as the body ; last 

 two abdominal segments fused. Mature 

 caterpillar: Head less than one fourth 

 the width of the body ; posterior portions 

 of body segments slightly elevated,; body 

 covered with stellate piliferous papillae. 

 Chrysalis : Dermal appendages consist- 

 ing of uniformly tapering cylindrical 

 hairs. 



Tribe Chrvsophanini. 



Butterfly : Club of antennae distinct, 

 usually equal throughout; third inferior 

 subcostal nervule forked ; spines on 

 under side of tarsi numerous and clus- 

 tered irregularly at the sides. Males 

 with no discal patch of special scales. 

 Egg: Domed, much less depressed above 

 than truncate below; angles of cells 

 scarcely or not prominent. Caterpillar 

 at birth : Head nearly or quite as broad 

 as body ; eighth abdominal segment not 

 fused with others. Maturccaterpillar: 

 Head one half or nearly one half the 

 width of the body; highest portions of 

 body segments at or in front of the mid- 

 dle of the segments, the anterior slope 

 the more abrupt ; body clothed uniformly 

 with short pile, or with longer hairs 

 (sometimes springing from bosses) ar- 

 ranged transversely. Chrysalis : Dermal 

 appendages short fungiform. 



Subfamily PIERINAE. 



Butterfly : Antennae straight. Median 

 nervure of fore wings with three 

 branches ; hind wings partially enclos- 

 ing the abdomen. Fore tibiae with no 

 epiphysis ; each of the claws bifid ; 

 paronychia generally present. Usually 

 of medium size. Egg: Tall and slender, 

 greatly tapering above and often below 

 so as to have a slender base, vertically 

 ribbed and trellised throughout. Cater- 

 pillar at birth : Head free with a retro- 

 arcuate posterior dorsal curve. Body 

 cylindrical, with ranged papillae each 

 supporting a single appendage. Mature 

 cateipillar : Head free, scarcely if at all 

 smaller than the succeeding segment, 

 with a posteriorly descending surface as 

 in infancy. Body nearly uniform clothed 

 abundantly with small briefly piliferous 

 papillae and generally longitudinally 

 striped ; no osmateria on thoracic seg- 

 ments. Chrysalis : Anterior extremity 

 ending in a single central conical pro- 

 jection thrust some distance in advance 

 of the base of the antennae, and without 

 ocellar protuberances. Dorsal surface 

 of the abdomen ridged, if at all, along 

 the mediodorsal line ; /. e. single. Girt 

 crossing the middle of the first abdom- 

 inal segment. 



Tribe Rhodocerini. 



Butterfly : Club of antennae gradually 

 incrassated, cylindrical, apically truncate; 

 palpi very short and moderately stout, 

 the apical joint minute ; third subcostal 

 nervule of fore wings with a long fork ; 



