KEVISION OF SrECIES Of THE CiEXUS AUKOTIS. 51 



The tlilfeiences between the two species have been uh-eady indicated. 

 Elimata is the hirger and is rather variable in apin-arance, and in de- 

 tails of luaculation, leadin<;to its redescription by both Messrs. Grote 

 and Morrison. 



The genns Semiophora is adopted on Mr. Butler's snjfgestion (Tr. I<]nt. 

 Soc, Loud. 1881), 385j tliat tlie elimata of (iuenee was referable to it. 



Semiophora elimata (in. 



1852. Gn., Sp. Geii. Noct., i, 3:5^5, yotiuii. 



1856. Wlk., Cat. 1?. Mns., Noc, x, 4U0, druphiphura. 



1880. Grt., hull. Siirv., vi, 5015. 



. badicollis Git. 

 1873. Grt., Bull. Hnft. Soc. Nat. Sci., i, 1315, pi 4, f, 18 .tmmacuina. 

 1875. Grt., Can. Ent., vii, pi. 1, f, 12, Agrotix. 

 1875. Morr., Proc, Ac. N. .Sci., IMiil., 27, 55, Atjrotis. 



dilucida Morr. 

 1875. Morr., Proc. Ac. N. Sci., Phil., 27, .5,5, Atjruth. 



1878. Grt., linll. Siirv., iv, 170, A(jtoli8. 



1879. Butl., TraiiH. Ent. Soc, Loud., lti:id, 38.5, pr syii. 

 jaiiualiii Git. 



1878 Grt., Bull. Siirv., iv. IG'J, Agrotis. 



Mr. Grote's translation of Guenee's description is accurate, and is.as 

 follows: •' Fore wings pale ashen, much mixed with pale violaceous 

 red, all the lines visible of the former color, preceded and separated by 

 shades of the latter tint, especially the subterminal line which is very 

 sinuous and irregular; the t. p. line is denticulate ; the t. a. line forms 

 three large teeth, all marked on costa by a deep brown mark. The two 

 stigmata well dehned, pale, separated inferiorly by a dark line; the 

 orbicular contiguous to the t. a. line; the reniform large and regu- 

 lar, the terminal space ashen. Hind wings of a uniform dark grav, 

 with fringe paler and more reddish. Beneath the fore wings are red- 

 dish. Antenn:c of the male strongly pectinate. Female larger but 

 similar." 



" Expands 40"""." 



This description very well characterizes the average of the forms of 

 hadicolUs (irt., where the transverse lines are fairly comiilete. Mr. 

 Morrison recognized the likeness of his species, dilucida, but considered 

 it as distinct. A description drawn up from a large number of species 

 is as follows : 



Head, thorax, and primaries puri)lish brown, variably powdered with 

 bluish gray scales, which are sometimes so dense that the color appears 

 an even pale gray. Secondaries and abdomen pale dull fuscous, ofttMi 

 reddish, especially in the dilucida form. Beneath, warm red brown 

 base and disc of i)rimaries more fuscous- 

 Transverse lines tending to become obsolete, always, however well 

 marked on costa. T. a. line obli(|U('ly from costa over orbicular then 

 with an inwanl curve embracing half the orbicular, thence with two 



