528 [December 



With JVoctua pJecfa Linn, and ^V. ochrogaster Gruenee belonging to 

 Boisduval's genus Chersofis (Ocliropleura Hiibn.) It is a more robust 

 and darker colored species than these, and with them cannot be gene- 

 rically separated from the other species of the genus JVoctua. 



ANTHCECIA, Boisduval. 

 Anthoecia jaguarina, Guenee. 



Mr. Ridings has collected many % and 9 specimens of this fine spe- 

 cies in Colorado Territory, which were taken with the following new 

 species of the genus on flowers during the month of August. 



As I have never seen specimens of this species from the Eastern or 

 Middle States, and it would seem to occur frequently in Colorado, it is 

 probable that a more Western Habitat should be given to this species 

 than is understood by the one accorded to it by M. Guenee. 



The specimens do not vary materially from M. Guenee's figure and 

 description, or from each other. The general color is paler, the mark- 

 ings less distinct than in M. Guenee's somewhat disproportionate figure, 

 and the markings of the under surface are in certain specimens nearly 

 obsolete. 

 Anthoecia mortua, nov. sp. (Plate 6, fig. 1. % .) 



Anterior wings evenly and entirely pale yellowish ochraceous, all the 

 markings obsolete ; certain paler undefined marks on the costa indicate 

 the position of the median lines which are not perceptible ; terminal 

 space a little paler than the rest of the wing. Posterior wings yellow, 

 without markings except a terminal black band interrupted with yellow 

 on the terminal margin at about the middle. Under surface of both 

 wings paler than upper surface of anterior wingSj with a terminal dis- 

 continued blackish shade band, and, on anterior wings, a faint discal 

 spot and a few yellowish hairs at base. Head, palpi, thorax, legs and 

 abdomen, pale yellowish ochraceous ; of these the thorax is a little the 

 darkest. Exp. % . 1.10 inch. 



Habitat.— Colorado Territory, Mr. James Ridings. (Coll. Ent. Soc. 

 Phil.) 



The anterior tibiae in the present, as in A. Jaguarina and all the 

 species about to be described, are furnished with a terminal series of 

 stout short black regularly diminishing spines. 



Anthoecia Packardii, nov. sp. (Plate 6, fig. 2. 9 .) 



Anterior wings- produced at apex, obscure olivaceous ochraceous, 



