PSYCHE. 



GROUP CHARACTERISTICS OF SOME NORTH AMERICAN BUT- 

 TERFLIES— VI. 



BY SAMUEL H. SCUDDER, CAMBRIDGE, MASS. 



Tribe Eumaeini. 



Butterfly: Antennae gradually in- 

 crassated, the club hardly distinct, taper- 

 ing apically ; last joint of palpi nearly as 

 stout as middle joint ; third superior sub- 

 costal nervule of fore wings simple; 

 upper of the two veins closing the cell of 

 same obsolete, the lower complete ; 

 apical armature of fore tarsi of male 

 the same as in Theclini. Males with no 

 discal patch of special scales. Egg: 

 Unknown. Catet-pillar at birth : Un- 

 known. Mature Caterpillar : Cylindrical, 

 the head fully half as broad as the body ; 

 highest portions of body occupying the 

 posterior half of each segment ; body 

 clothed with hairs the more important 

 of which are clustered upon longitudinal 

 series of fleshy bosses. Chrysalis : 

 Dermal appendages composed of equal 

 compressed twisted ribands, tapering 

 only at the extreme tip. 



Tribe Theclini. 



Butterfly: Club of antennae distinct, 

 usually unequal throughout ; last joint of 

 palpi far slenderer than middle joint ; 

 third superior subcostal nervule of fore 



wings simple ; both of the two veins 

 closing the cell of same subobsolete ; 

 last tarsal joint of fore legs of male with 

 a pair of spines differing from the others 

 only in being larger and curved. Males 

 with a discal patch of special scales on 

 fore wings. Egg: As much depressed 

 above as truncate below, the micropylic 

 pit very deep, the central depressed area 

 rarely including as much as half the 

 entire width of the egg. Caterpillar at 

 birth: Head noticeably narrower than 

 the body ; last three abdominal seg- 

 ments fused. Mature caterpillar : Head 

 one third or more the width of the body, 

 highest portion of body segments at or 

 behind the middle, the. posterior slope 

 the more abrupt ; body coarsely pilose, 

 the hairs longer along the ridges of the 

 body. Chrysalis: Dermal appendages 

 consisting of cylindrical equal hairs 

 tapering only at the tip. 



Tribe Lycaenini. 



Butterfly : Club of antennae distinct, 

 usually equal throughout ; third superior 

 subcostal nervule forked ; spines on 

 under side of tarsi comparatively few 

 and ranged in pretty regular series. 



