NO. 1140. NORTH AMERICAN NOCTUIDAE— SMITH AND DYAR. 35 



Ordinary spots always discernible, sometimes well m:irked; transverse posterior 

 line well defined and even fr'ujlda. 



6. Darker, the black powderiugs evenly distributed, veins somewhat smoky, giv- 



ing a strigate appearance; transverse posterior line continuous, with- 

 out blotchy marking pacijica. 



More whitish, the black powderings irregularly massed, veins not so marked as 

 to give a strigate appearance; transverse posterior line broken, with 

 blotchy black markings •. insita. 



7. Chalky white, black powderings very tine; ordinary spots well marked; trans- 



verse anterior line marked on costa, internal margin, and in submedian 

 interspace; transverse posterior line interrupted and blotchy; dagger 

 mark prominent and crosses transverse posterior line opposite anal 

 angle cretafd. 



White, with a faint creamy tinge; markings as before, but less r)romineiit; 

 powderings much less evident leporina. 



Grayish white, more evenly black powdered; orbicular absent; dagger mark not 

 distinct and does not cross transverse posterior line opposite anal 

 angle jmpiili. 



8. Transverse anterior line incomplete, but usually present in part 9. 



Transverse anterior line complete, geminate 10. 



9. White, Avith a creamy tinge, primaries rather sparsely powdered; orbicular dis- 



tinct I ep II seal in a. 



Ashen gray, primaries quite densely powdered with coarse black scales; no 



median shade line rindereUa. 



Ashen gray, as before, but with an evident, smoky, angulated median shade line 



or band trausrersata. 



10. Primaries dark bluish gray; transverse anterior line almost upright, its two 



parts almost equally distinct and quite widely separated; size smallest 



of the group iota. 



Group LOBELIAE. 



1. No black basal dash, line or streak and no black dagger marks of any kind.. . 2. 

 A black liasal dash, streak, or line present in all cases ; one or more dagger marks 



usually ])resent , . . . 3. 



2. Ground color creamy white; costal marks and transverse posterior line black. 



iniiotata. 

 Ground color luteous, the maculatiou but little darker and none of it black. 



belulac. 



3. The ordinary spots are more or less obviously tied or connected by a black line 



or dash 6. 



The ordinary spots not connected by a black line or dash. 



8caly vestiture of primaries smooth, decumbent 4. 



Scaly ve.stiture of primaries elevated, rough, giving the surface a more or 



less \el vety appearance 15. 



4. Maculation strigate, all the ordinary lines and spots obscured 9. 



A more or less obvious black mark or dagger line touches or crosses the trans- 

 verse posterior line opposite the cell 5. 



No trace of a dagger mark or black line opposite the cell of primaries 10. 



5. Dorsum of the thorax discolorous, yellow, primaries creamy white with yellow 



shadings, secondaries smokj'^; size large morula. 



Dorsum of thorax concolorous. 



Size moderate, primaries ashen gray, no median shade line; all the dashes 



distinct and the markings well defined occideutalis. 



Size small, primaries with a more or less obvious median shade line. 



