no. 1645. REVISION OF CERTAIN NOCTUIDJE— SMITH. 215 



shades or bands. So far as genitalic structure is concerned, there is 

 no near agreement between the species in either sex; but in the 

 female the tendency is to symmetry, to a complete plate inferiorly, 

 with the opening - to the bursa copulatrix posteriorly, or at about the 

 usual point of the anal opening. Correspondingly in tin- male, the 

 structures are quite similar on the two sides, and the introniittent 

 organ is only a little curved. 



The next series of specimens may be strictly typified by lunata so 

 far as character of maculation is concerned. The t. a. line is usually 

 geminate, very oblique inwardly, with a slight outward arquation, 

 but without teeth or angles. There are usually two or three, more or 

 less waved or sinuate oblique lines on the disc; the t. p. line is usually 

 distinct, often geminate, never with outward denticulations in the 

 interspaces. On the secondaries the type of maculation is similar to 

 that on the primaries, and particularly the terminal area is practically 

 the same on both wings. 



Lunata, sdlicis, and edusina are distinct from all the others in the 

 series in not having the seventh segment of the female distinctly 

 lobed beneath. In lunata the segment is complete but asymmetrical, 

 and the opening to the bursa is at the extreme right of the segment, 

 protected by a cercus-like process. There is no modification of the 

 upper part of the segment and there are no lateral depressions. The 

 males have the harpes wildly asymmetrical and the introniittent 

 organ is strongly hooked and twisted. This is the largest of our com- 

 mon species and in the male tends to form two blue terminal lunate 

 areas on primaries and one on secondaries. 



Salicl* is the Pacific coast representative of the eastern lunata. It 

 is a little smaller, a little more uniform in ornamentation, and has 

 a number of other slight habital peculiarities that are not easily 

 described. In genital structure it is very like its eastern relative, sq 

 that, in fact, it becomes a matter of detail rather than of type of 

 structure. 



Edusina is a greatly reduced lunata, and resembles the Zale series 

 in appearance if not in structure. It comes from Texas and parts of 

 Arizona, and is of a dull ashen gray color without brilliant or strik- 

 ing contrasts of any kind. In the male the sexual structures are not 

 unlike those of lunata in general type, though differing much in 

 detail; but in the female the seventh segment beneath is broken up 

 into a number of chitinous fragments, which border but do not out- 

 line the opening to the copulatory pouch. This is one of the smallest 

 of our species and not often mistaken in collections. 



All the rest of the species of this series have the seventh segment 

 of the female distinctly lobed beneath, and laterally at the anterior 

 angles above, the, depressions are very distinct. 



