4 JOHN B. SMITH. 



well to clistingui.sh Itein'oiu. In sexual strxicture the two differ obvi- 

 ously, though the resemblance between them is sufficiently close to 

 indicate their near relationship. 



In liemina the tip is somewhat irregular and si)ines extend for 

 half its length. The hook or clasper is rather small and stout; the 

 tooth from the oblique ridge is short, broad at base, narrows ab- 

 ruptly to a sharp point, and the extension beyond the tip tapers 

 evenly and without curve. 



In disposifa the tip is even, and there are a few spinules at the 

 extreme point only. The hook or clasper is, proportionally, longer 

 and more slender ; the tooth from the oblique ridge is long, square 

 at base, with lateral projections at one-third of its length, thence a 

 little curved to the tip. The extension beyond the tip is long, 

 rather broad at base, then drawn out into a long point which is a 

 little curved. 



Bethunei, patefacta and innominata are pale species, ranging from 

 whitish to luteous yellow or reddish. The markings are all fairly 

 obvious, not strigate, the t. p. line for the most part broken into a 

 series of geminate, venular dots. The s. t. line is marked by a pre- 

 ceding series of darker spots or shadings, or the terminal space is 

 darker. The median shade is oblique from the costa betw'een the 

 ordinary spots to below the reniform, forming a sort of Y shaped 

 patch about that spot wdiich is quite characteristic. There is no 

 longitudinal black line at base; but in some very well marked 

 specimens there is a false appearance of such a line caused by a 

 series of black scales below the median vein. 



Bethunei is the palest species, the ground being almost whitish in 

 some examples, washed or mottled with luteous, the shadings of a 

 deeper tint of this same color or of a silvery gray. As a rule the 

 median shade is the most conspicuous portion of the wing; but in 

 some cases the shadings before and beyond the s. t. line are also 

 contrasting. The harpes of the males are long, the tips very long 

 and oblique, with a series of small spinules along the edge from the 

 |)oint to the extension of the corneous ridge. The hook or clasper 

 is moderate, stout. The tooth from the middle of the oblique ridge 

 is very broad at base and narrows very abruptly to a slender point. 

 The extension beyond the tip is an evenly narrowing spur of moder- 

 ate length. 



Patefacta resembles a darker, washed out bethnnci with blackish 

 secondaries and with an unusually prominent dark s()ot in the sub- 



