NYMPHALIN^. 227 



Group YI. Argtnnina. 



Imago. — Forewings elongatelj-triangular, or triangular ; apex obtuse or rounded ; 

 exterior margin more or less slightly scalloped, or even. Hindwings short, broad, 

 obovate, in some subquadrate ; exterior margin more or less slightly, or prominently 

 scalloped ; in some with a more or less prominent bi'oad caudate angle at end of the 

 upper median veinlet. 



Caterpillar. — Head hairy, either armed with two vertical branched-spines, or, 

 not armed. Body armed with from six to nine longitudinal rows of branched-spines. 



Chrysalis. — More or less constricted at the waist ; thorax arched ; wing-cases 

 ample and protuberant ; either with dorsal conical tubercles, which in some are 

 slender, in others the anterior and the posterior dorsal pair are abnormally long, 

 enlarged, and expanded at the base ; head obtusely or acutely bifid. 



Egg. — "Sugar-loaf shaped" (Scudder). "As high as wide or higher; ribs 

 rather numerous, heavy, blunt, anastomosing, projecting at apex, with numerous 

 distinct cross lines " (Doherty). 



Group VII. Melit^ina. 



Imago. — Small. Forewings elongately-triangular ; apex obtuse ; exterior 

 margin almost even. Hindwings short, obovate; exterior margin barely slightly 

 scalloped. 



Caterpillar. — Head small, unarmed. Body attenuated a little anteriorly, armed 

 with four longitudinal series of short, coarse branched-spines. 



Chrysalis. — " Rather stout. Head obtuse ; thorax rounded ; abdominal 

 segments with dorsal and lateral small blunt tubercles " (Scudder). 



Egg. — " Somewhat acorn-shaped, higher than broad, well rounded at base and 

 at sides, and broadly docked at the summit ; with veiy slight longitudinal ribs 

 occupying only the upper half, the surface below being smooth, or indented with 

 polygonal or rounded depressions " (Scudder). 



Group VIII. EURYTELINA. 



Imago. — Of moderate size. Forewings mostly short and broad, elongately- 

 triangular, or triangular ; costal vein dilated at the base ; apex abruptly pointed 

 or obtuse; exterior margin either erect, slightly scalloped, and angled outward 

 below the apex and less so at the upper median veinlet, or the margin oblique 

 and nearly even. Hindwings short, broadly obovate ; exterior margin more or 

 less scalloped. 



Caterpillar. — Slender. Head armed with two long branched-spines. Body 

 armed with two dorsal and two lateral rows of short branched-spines. 



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