no. 1645. REVISION OF CERTAIN NOCTUID^E— SMITH. 243 



appearance. The median space may be entirely uniform, and in that 

 case there is often a dark shade band beyond the lower half of the 

 s. t. line from the angle of which a dark shade may extend to outer 

 margin. When this is accompanied by a dark apical blotch we have 

 two large pale terminal lunate areas as is characteristic in lunata 

 and minerea. The extreme in the other direction comes when the 

 wings are very uniform, without contrasts, and only the t. p. and 

 s. t. lines stand out in whole or part, black and contrasting. 



Just where to draw the line between this form and lineosa becomes 

 puzzling and a matter of nice judgment, particularly when the spe- 

 cies occur together at the same time and are taken under absolutely 

 identical conditions. I can find no tangible structural difference of 

 any kind between them and I have arranged them to show a full line 

 of intergrades from one to the other; yet the line is unsatisfactory 

 and the arrangement into two series is on the whole most satisfactory. 

 I believe there are two species. I admit my inability to separate 

 them by any positive characters. Lunifera is on the whole a smoother 

 species, less strigate, less obviously crossed by undulating darker 

 shades, and with more definite ornamentation throughout. 



The middle tibiae are set with a moderate number of rather long 

 spinules, easily seen, and the middle femora of the male have the 

 mass of specialized scales very large and the tufting conspicuous. 



The male genitalia are distinctly asymmetrical, both harpes very 

 much curved and forked at tip, but in a totally different way, as 

 appears by a reference to the figures. The uncus is very long and 

 slender and is a little sinuate toward the tip, which is acute and a 

 little hooked. 



The females have the impressions of the upper surface of penulti- 

 mate segment well marked and the tufts a little discolored. On the 

 under side the segment is distinctly lobed, the lobes not markedly 

 different, yet sufficiently so to be characteristic. The opening to the 

 copulatory pouch is from the upper inner angle and conies from the 

 angle itself rather than from either upper or lateral margin. 



PHEOCYMA LINEOSA (Walker). 



1857. Homoptera lineosa Walker, C. B. Mus., Het., XIII, p. 10f>(). 



1865. Homoptera lineosa Bethune, Canadian Journal, X, p. 259. 



1875. Homoptera galoanata Morrison, Proc. Acad. Nat. Sci. Philadelphia, 



1875, p. 435. 

 1878. Pheocyma luniferat Grote, Bull. U. S. Geol. Surv., IV, p. 185. 

 1880. Pheocyma luniferat Grote, Can. Ent, XII, p. 87. 

 1893. Homoptera lineosa (=lunifera Grote, not Hubner) Smith, Bull. 44, 



U. S. Nat. Mus., p. 368. 



Ground color a rather uniform pale or creamy gray, tending to 

 reddish brown. Head with a variably evident frontal line, collar 



