A KEVISION OF THE DELTOID AfoTIlS SMITH. 37 



selected specimens before me exhibit a remaikal)le difl'ereuce in ai)[)ear- 

 ance. Uuiformly colored specimens are rare, and tlie extreme in this 

 direction is the type of my Z. obsoleta, a Vermont specimen, which is 

 almost uniforndy blackish. In some specimens the median lines become 

 dihuse, and the transverse anterior is most usually so modilied. Some- 

 times the outer half of the median space is darker and sometimes the 

 median space is uniformly in contrast with the basal an<l snbt<'rminal 

 spaces, the termimil space olten varying independently. (()uite as 

 usually we may have the median space lighter than any other parts of 

 the wing, and this contrast is often very marked. The species is 

 broader winged than any of its allies and has a somewhat more<)bli(|ue 

 outer margin and more perceptibly arched costa, differing, indeed, quite 

 obviously from most others of its allies in these respects. It is (piite 

 common. 



The antenna^ of the male are much as usual in the genus. They have 

 long lateral bristles, a scaly thickening of the outer side at basal third, 

 marked by a slight bend, and inwardly two of the joints are shorter, 

 stouter, each furnished with a thick pointed spine somewhat curved at 

 ti]). Occasionally a third Joint is involved and a third smaller si>ine 

 is present. On all the Joints at this point there are an unusual number 

 of teatlike tubercles, some with and some without short hairs, and 

 these are evidently sensory processes. They lessen in nund)er in both 

 direction%s from this point, but more gradually so toward the tip. 



The antenna' of the female are laterally ciliated. 



The fore legs of the male are very prominently tufted and quite 

 strongly modified. The coxa has a nn)derate tuft of long hairlike 

 scales, those at base nuich the longest, then regularly beconnng shorter 

 to the tip. The trochanter is remarkably elongated and nearly e(pial 

 to the femur. The femur is grooved on the upper side to receive a 

 brush of hairlike scales nearly as long as fenmr and irochanter com- 

 bined, and capable of being spread out fanlike. The tibial process is 

 very large ami clotiied witli dense, long scales, which do not. liowever, 

 form distinct tuftings. 



In the female the fore legs are quite normal and the trochanter is not 

 in any way enlarged or elongate<l. 



Zanclognatha piinctiforniis, new spefies. 



Ground color an even, carneons gray. Head and thorax eoncol- 

 orons. Primaries with the maculation well defined. Basal line narrow, 

 brown, marked on the costa only. Transverse anterior line luirrow, 

 brown, irregularly onteurxed, and with uneven ontcurves in the inter- 

 spaces. Trans\erse i)Osteri()r line narrow, l)r<>wn. rather regularly 

 l)isinuate, a little marked, but hardly denticulate on the veins. Sub- 

 terminal line sinuate, irregular, pale, lunnlate, the Innules enqthasized 

 by a series of i)receding black spots, whi<di are inwardly dillnse. A 

 series of black terminal dots on the veins. The outer part of the 



