AC.IM >IIS Mil! Al'.n.lS. n. s. 



<J . Vorv lilii;ic uii.irnicd ; in.il( .iiiIcmh.ic siiuplc. I '.l.ickisli t'uscotis; tcrini- 

 mii siiaco jifilcr. iiowdcicil willi ui'.iv i^li. i.incs dlililcr.ilc. Mcdi.ni lines 

 aiiproximatf. Siililcrinin.il (Idinrd li\ di llci-ciicc of sli.idc. ('isc:il .spots 

 coiilrastiiiir, yt-liowisli ,,v ncli<-i-\ while in .1 I. luck sli.idc: (irliinil.i r reduced, 

 reniforiM modcr.-de, siilM|ii.idr.ile. \ wliilisli dol in Iriinl ol' inserlioiis of 

 fore wiiiirs. I lend coll.n- ;ind leaul.ie ('(ineoloroiis ; dorsuin ol' llie lliiir;ix 

 ]);de I'eddisll, eoillrMsliiiL; ; leuid.ie \\illi indislinci innei' lil.iek edniuM-. Mind 

 wings (l;irk fuscous, willi p.ile inleidined IriiiLi-es. r.ene;dh (hirk fiiseous 

 powdered witli gr;i\isli: on pi-ini.i rics llie ini(iition of <'oinnion line ni.-irked 



ill l)l;icU. ;md eostni dots. l'',\i),inse '.Ui .\llie(' lo ilLsu-niiln lis. Iinl very 



ditVereni in color. 



Vwv. LoiAiiTv: Id;, ho Sprin,i;-s. Colorado ( I'rof. V. II. Snow). 

 Nr.'^iiiKit AM) Si:x ok T'.i'i.s: ^ 

 Types in: I'-rilish Museum. 



Srix'iMKNs ]'',x.\MiNKns ro1;d, '23; from, Glenwood Springs, Colo.; 

 Colo. (Bruce); Provo, Vt;\\\; I''ort Winiiate, N. Mex.; Yavapai Co., Pres- 

 coti, .ind White Mountains, Ariz.; Esnieraldo Co., Nev. One male, com- 

 pared wilh tyjie, by Sir George Hampson, Glenwood Springs, Colo. 



Gknetalic vSi.inr.s: 1, Cdeiiwood Springs, Colo. 



GROUP DI.SCOIUALIS 



Thi.s group contains a single species, discoidalis. It is easily 

 separated on its peculiar appearance, different from anything else 

 in the genus. Upon close examination it shows a strong relationship 

 to m!?-al)ilis. The cell is normally filled in with black and the black 

 usually continued basally to the t.a. line ; or with at least a trace 

 of black scaling, giving this space a dark appearance. There is a 

 trace of the crest on the thorax, only visible in fresh specimens 

 and easily lost. Discoidalis possesses the same disconcolorous ru- 

 fous patch on the dorsum of the thorax as Tnirahilis. The antennae 

 also arc much the same ; the setae small at the base, subequal with 

 the cilia, longer toward the tip. The ampulla of the clasper is 

 membraneous. 



Discoidalis and mirahilis are the only two species that possess 

 the spreading, divided crest on the thorax, but have the ampulla of 

 the clasper membraneous. 



LAMPRA DISCOIDALIS, Grt. 



1876. Grt, Bull. Buff. Soc. Nat. Sci., Ill, 82, pi. 4, f. 9, Agrotis. 



1883. Grt., Proc. Am. Phil. Soc, p. 144, Agrotis. 



1890. Sm., BuU. U. S. N. M., XXXVIII, 36, Rhynchagrotis. 



1S93. Sra., Bull. U. S. N. M., XLIV, 56, Rhynchagrotis. 



189-5. Grt., Abb. Nat. Xer., Bremen, XIV, 18, Agrotis (Lampra). 



1903. Hamp., Cat. Lep. Phal. B. M., IV, 636, pi. LXXVII, f. 9, Triphaena. 



1908. Sm., Can. Ent., XL, 225, Rhynchagrotis. 



92 



