March, 1902.] SmITH : NeW NOCTUID^. 53 



much alike. The only variation is in the amount of mottling in the 

 upper portion of median space and in the amount of yellow in the s. t. 

 space. 



The species is quite unlike any other of our described species and 

 does not fit properly into any of the series in my Revision of this 

 genus. It may perhaps be best associated with arizonce on superficial 

 appearance, until other allies are found. 



The front is somewhat bulging and, on the hind wings, vein 5 is 

 well removed from 4 as well as weaker than the others. 



Acontia tenuescens, sp. nov. 



Head and thorax white, the head with a narrow, gray, transverse band across 

 middle of front. Abdomen wanting, but probably white, concolorous. Primaries 

 white from base to beyond the middle. On the costa the white is broken a little 

 beyond the middle by an ocher yellow mark, which extends toward the reniform and 

 is not prominent or sharply defined. Beyond this it extends almost to the apex. 

 Orbicular wanting. Reniform of good size, round, black, mottled with blue scales, 

 Jiarrowly white-ringed. On the internal margin just outside the middle a moderate, 

 fairly defined, slate gray or blackish band starts, curving upward so as involve half of 

 the reniform and continuing on to or near to, the apex. The terminal space is 

 variably darkened by slate-gray or blackish shadings, and there is a blackish or dark 

 gray, broken terminal line. The fringes are white. Secondaries white, the apical 

 region shaded with blackish ; fringes white. Beneath, primaries black except the 

 margins and fringes ; secondaries white. Expands .88 inch = 22 mm. 



Habitat. — Lake Worth, Florida. 



Two female examples from Mrs. A. T. Slosson ; both of them 

 minus the abdomen ; but otherwise perfect examples. The loss of the 

 abdomen was in transportation and was not due to any error or 

 omission of the collector. 



This species belongs with virginialis Grt., and binoada Grt., dif- 

 fering from both in the well-defined narrow curved band which 

 extends from the inner margin to the apex. In one example the apex 

 is fully attained without break other than a fine white s. t. line : in the 

 other the band is broken just beyond the reniform, traceable by yellow 

 scales to the apex, where the costal margin is again dark gray. It is 

 probable that all intermediate forms occur. 



In this species the front bulges moderately, vein 5 of the seconda- 

 ries is from the cross -vein, well removed from 4, and it is much weaker 

 than the others. 



