1680 THE BUTTERFLIES OF NEW ENGLAIJD. 



Egg. Pretty high, broinlest at the base, rouiKlod, but very little narrowed on the basal 

 half, above well rounded, the summit not flattened; surface broken up by exceedingly 

 sliglit, raised lines into quite regular, equiangular, hexagonal cells. 



Caterpillar at birth. Head moderately lai'ge, broadest opposite the upper limit of 

 the ocellar lield, elevated, narrowed and domed above; the triangle nearly half as high 

 again as broad, reaching considerably above the middle of the front, the middle op- 

 posite the middle of the ocellar field, occupied by a pair of papillae, equidistant from 

 each other and the sutures, bearing long and slender bristles; similar paired papillae, 

 bearing long and slender, scarcely arcuate bristles, are found outside the triangle just 

 above its upper limit and next the middle of its upper half, besides lateral ones in the 

 centre of the ocellar field, just above the middle, and at a similar distance and as far 

 above this as the ocellar bristle is below it; ocelli unequal, prominent but flat; third 

 joint of antennae nearly half as long again as broad, cylindrical but slightly enlarged 

 apically and arcuate on the inner side; the joints of the maxillary palpi successively 

 half as broad as the preceding, the basal quadrate, all of nearly equal length. Body 

 slender, cylindrical; dorsal thoracic shield as bro.ad as the spiracle of the same seg- 

 ment, furnished with pretty long, tapering, pointed, distant hairs; the bristles of the 

 body long, slender, distinctly tapering and minutely but distinctly enlarged at the tip into 

 a comparatively long club, not so broad as the base of the bristle; they are consider- 

 ably longer than the segments and arranged as follows : a laterodorsal series, slightly 

 nearer together on the thoracic than on the abdominal segments, placed anteriorly; a 

 lateral series placed posteriorly ; a suprastigmatal series placed mesially ; a stigmatal 

 series placed anteriorly; and an infrastigmatal series placed posteriorly^ the stigmatal 

 bristles are shorter than the others and the laterodorsal series are transformed on the 

 last abdominal segment into longer, somewhat recurved, tapering hairs. 



This North American genus comprises but three species, two western, 

 the third eastern, inhabiting a zone extending from Atlantic to Pacific, 

 between the 35th and 5(3th degrees of httitude. The eastern species is 

 abundant throughout New EngLind. 



They are butterflies of very small size, the male possessing an arcuate 

 discal streak on the fore wings. The wings are dark brown above, 

 marked with tawny, especially in an extra-mesial transverse band of spots 

 and along the costal margin of the fore wings. Beneath they are ferru- 

 ginous and the middle of the hind wings have conspicuous, very large 

 and irregular yellow spots. 



The metamorphoses of one species are partially known. The butter- 

 flies are single or double brooded ; how they pass the winter is uncertain, 

 but probably either as chrysalids or as mature caterpillars. The butter- 

 flies frequent meadows and highways and have a very lively flight. In re- 

 pose their wings are raised at different angles- 



The eggs are unusually high and regularly domed, greenish white and 

 very profusely punctuate. The caterpillar at birth has a nearly white body 

 with black head and thoracic shield, and the dermal appendages scarcely 

 expanded at the tip and longer than usual, being as long as the segments. 

 Afterwards the caterpillar becomes of a griseous color from the nuiltitude of 

 dark papillae on the pale brown ground color. The caterpillars feed on 



