REVISION OF SPECIES OF THE GENUS AGROTIS. 33 



Rhyiichagrotis eniargiuata Grt. 



187G. Grt., Bull. BiifT. Soc. N. Sci., iii, 82 AfjroHs. 

 1878. Grt., Hull. Siirv., iv, 171 Aijrotis. 



" 9 Reseinblins" /HS"?rt)-/.<, but without p.ale margin topriniarios; abdo- 

 men tlattened 5 this and the Iblhiwin*^ species [fnvuhi] with insuhn-isiira 

 nearest to formalis. Wings narrower than in carisHima. Dark jjurplo 

 browu. Colhir surmounted by a narrow bhick line. Stigmata concol- 

 orous, subecpial, narrowly pale margined. Lines black, geminate, in- 

 dicated on costal region, else faint, no black marks or shades. Orbicu- 

 lar open to costa. Hind wings darks fuscous with interlined fringes. 

 Beneath paler; costal regions stained with purplish; common line and 

 discal marks ou hind wings. Abdomen dark fuscous above ; purple 

 stained beneath. 



'' Expanse 33""". No. 784, California, Mr. Hy. Edwards." 



This may be formalin or insularis but may also be a good species, 

 since some of the forms in this group are very closely allied. 



In Bull. Surv., iv, 174, Mr. Grote gives as distinctive: " Rather uar- 

 row-winged, dark purple brown ; concolorous ; ornamentation subob- 

 solete ; lines darker than the wing; orbicular incomplete above. Col- 

 lar with a distinct, black superior edging." 



This indicates almost certainly one of the evenly colored forms of 

 formalis. 



Rhynchagrotis caiissima Ilarv. 

 1875. Harv., iu Grt. check list, p. 25. 



" S Allied to formalin. Head, thorax, fore wings, and body beneath 

 stained of a reddish purple over fuscous. Veins marked with blackish ; 

 lines obsolete, geminate, marked by included paler tint ; stigmata obso- 

 lete; collar with a jet black contrasting band. Beneath the wings 

 are blackish, irrorate ; hind wings paler with line and small discal 

 mark. California. Expanse, 34" '"." 



Except as a comparative description this is very incomplete. As- 

 suming that the species is really related to formalis this description 

 applies to aspecimen of insularis (Irt., before me. But INIr. (l^rote, who 

 had an opportunity of knowing all of Dr. Harvey's types, and who, in- 

 deed, obtained possession of most of them, places this species near to 

 intrifa and rava, and far from the species with which it is compared. 

 This makes me doubtful whether the suspicion of identity with insu- 

 laris is correct; but since Dr. Harvey is usually very accurate I retain 

 the species where he originally placed it. I have never seen a species 

 marked carissima in collections, and the type is probably iu Mr. Grote's 

 collection in the British Museum. 

 23?)45— Bull. 38 3 



