303 



have myself been mistaken in regarding aJternata as Californian ; 

 the variable Californian specimens, in some of which the orbicnlar 

 is open, belonging apparently to a distinct species which I have 

 described as cupidissinia. 



Agrotis incivis Quenee. 



Mr. Morrison sends me a specimen of \\\\ Anicla Alabamae as this 

 species, which is briefly described by Gnenee, who makes no men- 

 tion of the exterior dotted line on the primaries. The name Anicla 

 may be used as a sectional one for the species which is, as I have 

 pointed out, essentially an Agrofis in its spinose tibiae, but appears 

 to differ by the smooth thorax, Avhich is clothed with narrow scales 

 rather than hairs. I may have given too much weight to its 

 analogies with Laphygma. Mr. Morrison's simplicius and Guenee's 

 luhricans, are apparently related forms. 



Agrotis obeliscoides Guenee. 



I now believe that the species from the Eastern Slope, that I have 

 described as sexatiUs, is the same with that described by Guenee in 

 the Species General under the above name. From California I have 

 received three specimens, under the number 30 (red label), from Mr. 

 Behrens. They differ by the narrower, more lunulate reniform. 

 The orbicular is variable in shape, while the costal region is not 

 differentiated. I have a specimen of sexatiUs from Colorado, and 

 these characters may be found to be inconstant over so wide a 

 stretch of country. 



With regard to the question of "representative" species, I would 

 suggest that geographically separated forms in the Noctuidae exhibit 

 usually some characters which enable the entomologist to judge of 

 the locality whence the material came. Thus California specimens 

 of A. damlestina are paler, more distinctly marked than Eastern 

 ones. 



Agrotis Lewis! Grote. 



This species, from Colorado, differs by the fore tibiae having 

 terminal longer spines and in the disc of the thorax showing a 

 ridge-shaped tuft . The ornamentation resembles A . obeliscoides, the 



