1864.] 521 



Descriptions of North American LEPIDOPTERA— No. 5. 

 BY AUG R. GROTE, 



Curator of Entomology, Buffalo Society Natural Sciences. 



ALYPIA, Hubner. 

 Alypia Ridingsii, nov. sp. (Plate 5, fig. 1. %.) 



Anterior winj^s black, with a slight sub-cyaiieous metallic tinge, apex 

 produced, rounded, costa swelled at base. A large basal sub-triangular 

 very pale yellow spot on the median vein, beyond which is a small 

 rounded similarly colored spot on the disc. In the terminal space is a 

 series of five paler elongate spots, neatly separated by the black veins. 

 Posterior wings black, a single moderate pale yellow rounded discal 

 spot, beyond which, in the terminal half of the wing, is a large, some- 

 what ovate, pale yellow spot, divided inferiorly twice by the black veins. 

 Fringes on all the wings black, except on the apices of anterior wings, 

 where they are marked Avith white ; under surface resembling upper. 

 Head, palpi, orbits of the eyes, black; prothorax whitish; teguh^, tho- 

 rax, abdomen and legs black, with a bluish metallic tinge ; middle 

 tibiae with bright orange tufts on their upper surface, not reaching the 

 apex of the joint. % . Exp. 1.30 inch. 



ffahifaf.—Qohrado Territory, Mr. Ridings. (Coll. Ent. Soc. Phil.) 

 Resembles .-1. MacCidlochii. Kirby, from Canada, but difters from 

 Kirby's figure and description as follows: — The basal spot on the ante- 

 rior wings is more triangular, not elongated outwardly, nor divided by 

 a black line, the vein being covered with identically colored scales; the 

 terminal band is broader, composed of five instead of six spots; the 

 "whitish longitudinal one" of the under surface, "on the costal area" 

 is wanting; the spots on the posterior wings are quite diiferent, there 

 being but two spots in our species, the basal one small, rounded, undi- 

 vided and differently placed; the "costal streak" is also wanting. 

 Judging from Kirby's figure, the costa of the anterior wings in our 

 species is more excavated, apex more produced and rounded ; the teg- 

 ulse are black, not white, as are also the orbits of the eyes. Mr. Walk- 

 er's description contradicts Kirby's in giving the middle tibiae only 

 orange tufts, a character 1 have given to the present species with some 

 hesitation, the legs in the single specimen 1 have being imperfect, 



