JOHN B. SMITH, SC.D. 367 



tion. The reniform is rarely conspicuous, and the s. t. line is always 

 continuous, irregular, preceded by a darker shade. 



Historialis has the reniform conspicuously black, but without a 

 defining ring or mark. The inception of the median lines is not 

 conspicuous; but the lines themselves are complete, very even, the 

 s. t. line obscure and more or less punctiform. 



Tenalis looks like a small historialis, and has the same contrast- 

 ing reniform. But the costal spots incepting the median lines are 

 well marked or conspicuous, while the lines themselves are scarcely 

 traceable or altogether obsolete. The s. t. line may be altogether 

 wanting or may be fairly distinct and more or less punctiform. 



Pleonectyptera noctuidalis Dyar has nothing to do with this genus, 

 nor does Cosymbia alhocostaliata which he has recently referred here 

 belong to it, although he is correct in calling it a Noctuid. 



In tabular form the species will divide as follows : 



Posterior tibise of male thickened and tufted ; dense tuft on under side of prima- 

 ries below cell. T. p. line augulated on vein 7, median shade 

 distinct. 

 Primaries lemon-yellow to the t. p. line, chocolate-brown beyond. 



pyralis. 



Primaries uniform chocolate-brown geoinetralis. 



Median tibiae of male thickened and tufted ; wings of male with fringes or tufts 

 of hair from costal vein across median cell. 



Median lines even, pale; reniform conspicuous habi talis. 



Median lines dark, t. p. angulated or sinuate; reniform not conspicuous. 



Greenish-gray, shaded with olivaceous; lines diffuse; t. p. a little curved 



over cell, evenly oblique below reversalis. 



Ashen to yellowish or reddish-gray; lines well defined; t. p. angulated at 



middle and deeply incurved below incusalis. 



Legs of the male not modified in any way ; no tufts on under side of wings. 

 Median lines pale, subparallel ; t. p. line rigidly even, oblique from costa to 

 inner margin. 

 Larger; redder; median lines conspicuously pale ; reniform absent. 



parallela. 

 Smaller; yellowish-gray; median lines not conspicuous ; reniform linear. 



immaculalis. 

 Median lines not subparallel ; t. p. line more or less angled or outcurved over 

 cell and incurved below, never rigidly oblique from costa. 

 Orbicular present, punctiform; t. p. line angled on vein 7; median shade 



line present punitalis. 



Orbicular wanting ; t. p. line not angulate ; median shade line absent. 



Reniform obsolescent; median lines not incepted by black or dark spots 



on costa rectalis. 



Reniform well marked or conspicuous; median lines incepted by dark or 

 black costal spots. 



TEANS. AM. KNT. SOC. XXXIII. DECEMBER, 1907. 



