II. — Wingform. while trigonate;, longer in proportion to the 

 size of the insect, which is, in general, smaller; antennae 

 of male with cilia arranged in block-like pattern on tJie 

 segments, on the basal half of the shaft only (the termi- 

 nal half being more nearly like that of placida, not ap- 

 pearing subserrate; British Columbia only) samho 



LAMPRA TRIGONA, Sm. 



1890. Sm., Bull. U. S. N. M., XXXVIII, 24, Rliynchagroth vtipidis.sivia, 



Sm., nee. Grt. 

 1893. Sm., Bull. U. S. N. M., XLIV, -53, Rhyncliayrotis. 

 1895. Grt., Abh. Nat. Ver., Bremen, XIV, 58, Agrotis (Lampra). 

 1903. Hamp., Cat. Lep. Phal. B. M., IV, 640, pi. LXXVII, f. 3, Triphaena. 

 1908. Sm., Can. Ent., XL, 287, Rhynchagrotis. 



R. TRIGONA Smith n. sp. 

 cupidissima % Smith. 



1890. Smith. Bull. U. S. Nat. Mus., No. 38, 24, Rhynchagrotis. 



Habitat. — California; Oregon; Colorado; Arizona; Kansas; British 

 Cokmibia; Glenwood Springs, Colorado, in August. 



Mr. Grote Iiad named cupidissima in Mr. Neumoegen's collection, a 

 series of specimens which I assumed were correctly determined. Inter- 

 preting Mr. Grote's descriptions by these specimens, I made orbis and 

 laetula, synonyms of cupidissima in the monograph. The true cupidissima 

 is very different from this species, and neither orbis nor laetula agree at 

 all with it. A new name for wliat I have erroneously characterized as 

 Mr. Grote's species is therefore necessary, and I propose trigona, as above. 

 The types of this species are the specimens named cupidissima by me in 

 the collections IJ. S. National Museum. 



Bull. U. S. N. M./XLIV, 19, 1893. reads: "IName cited in 

 error." 



Bull. U. S. N. M., XXXVIII, 24, 1890, referred to by Dr. 

 Smith in his original description of trigona, reads : 



RHYNCHAGROTIS CUPIDISSIMA, Grt. 



VII, 101, Agrotis. 



X, 234, Agrotis. 



, IV, 1T3, Agrotis. 



Phil. Soc, XXI, 155, Agrotis. 



orbis Grt. 

 Soc. N. Sci., Ill, 83, Agrotis. 

 , 174, Agrotis. 

 Soc, XXI, 155, an syn. pr.? 



laetula Grt. 

 Soc. N. Sci., HI, 83, Agrotis. 

 X, 234, pr. sj^n. 

 . IV, 173, an sp. dist. 



87 



1875. 



Grt., 



Can. 



Ent., 



1878. 



Grt., 



Can. 



Ent., 



1878. 



Grt., 



Bull. 



Surv 



1883. 



Grt., 



Proc 



Am. 



1876. 



Grt., 



Bull. 



Buff. 



1878. 



Grt., 



Bull. 



Surv 



1883. 



Proc 



. Am. 



Phil. 



1876. 



Grt., 



Bull. 



Buff. 



1878. 



Grt., 



Can. 



Ent., 



1878. 



Grt., 



BulL 



Surv 



