136 BULLETIN 44, UNITED STATES NATIONAL MUSEUM. 



X. alticola Smith. 

 1890. Grt., Proc. IT. S. Nat. Mus., xin, 423, Xylopltasia. 



HABITAT. Gibson Mountains, Colorado, 12,500 feet. 

 The type is in the National Museum. 



X. ducta Girt.* 



1878. Grt., Bull. Geol. Surv., iv, 176, Hadena. 



HABITAT. Maine; Canada; New York; Washington. 



The type is in the British Museum, and is the species I know as such. 

 Dr. Beth uue sent uie a specimen marked insulsa by Walker; but the 

 type of insulsa is Carneades campestris. 



X. impulsa Gn.* 



1852. Gn., Spec. Geu., Noct., 1, 194, Mamestra. 

 1856. Wlk., C. B. Mus., Het., IX, 231, .Vamcstra. 

 1873. Grt,, Bull. Buff. Soc. Nat. Sci., 1, 108, Hadena. 

 var. mixta Grt. 



1880. Grt., Bull. Geol. Surv., vi, 264, Hadena. 



HABITAT. Canada in July and August. Eastern and Middle States 

 June and July; Texas. 



Mr. Grote's types are in the British Museum. The variety mi xta has 

 the reniforra somewhat pale marked, and the specimen is a little rubbed 

 so as to show a yellowish ground. Else it does not differ from the type 

 form. 



X. devastatrix Brace.* 



1819. Brace, Am. Jouru. Sci., i, 154, Plialcena, 

 1856. Fitch, Kept. Ins., N. Y., 315, pi. 3, f. 2, Agrotis. 

 1862. Harris, Iiij. lus., Flint ed., 445, Agrotis. 

 1869. Riley. 1st Kept. Ins. Mo., 83, Agrotis. 

 1873. Grt., Bull. Buff. Soc. Nat. Sci., i, 108, Hadena. 

 1875. Speyer, Stett. Ent. Zeit., xxxvi, 147, Hadena. 

 1878. Grt., Bull. Geol. Surv., iv, 178, Hadena. 



1881. Riley, Index and Supplt. to Mo. Rcpts., 56, Hadena. 

 1883. Sauml., Fruit Insects, 329, f. 341, 342, Hadena. 



aljccta var. t Gn. 



1852. Gn., Spec. Gen., Noct., i, 194, Mamestra. 

 1875. Speyer, Stctt. Eut. Zeit., xxxvi, 147, Hadena. 



ordinaria Wlk. 



1856. Wlk., C. B. Mus., Het., ix, 232, Mamestva. 

 1868. G. and R., Trans. Am. Ent. Soc,, 11, 77, pr. syn. 



1882. Grt., 111. Essay, 43, pr. syn. 

 contenta Wlk. 



1856. Wlk., C. B. Mus., Het., ix, 233, Mamestra. 

 1882. Grt., 111. Essay, 43, pr. syn. 



marshallana Westw. 



1857. Humph., British Moths, 1, 122, Agrotis. 



1858. Wlk., C. B. Mus., Het., xiv, lG98=coiitcnta. 



HABITAT. United States and Canada, June to September. 

 Walker's types are in the British Museum and have been correctly 

 referred by Mr. Grote. The reference to marshallana is after Walker. 



