GRAPTA II. 



aries, a naiTow broken stripe of light gx-een, edged on the anterior side by 

 black ; the usual extra-discal row of points distinct on primaries ; the silver 

 mark an arc of a circle, thickened at the upper end, sharply barbed at the 

 lower. 



Body above fulvous, beneath vinous-gray ; legs buff; palpi buff below, fulvous 

 above and at tip ; antennte fuscous above, ochracoous below ; club black, tip 

 fulvous. 



Female. — Same size. 



Primaries less incised ; tail short, narrow ; the dentations less prominent ; 

 upper side as in the male, the yellow lunules obsolete ; under side less varie- 

 gated, the colors being brown in shades, and without white except along costal 

 edge of primaries near apex ; both wings densely streaked as in the male ; the ex- 

 tra-discal points distinct, the green stripe indistinct on primaries, obsolete on sec- 

 ondaries ; silver marks shaped as in the male, but larger, more delicate, pointed 

 at the upper extremity, thickened, not barbed below. 



This little species is only known at present by the pair delineated on the Plate. 

 They were taken some years ago by the late M. Lorquin, and assigned to Mr. 

 Reakirt, with no other locality than " Rocky Mountains." 



Mr. Scudder (Syn. List, 1875), surmises that Marsjias may be dimorphic with 

 Satyrus. The two are different in size, in the ornamentation of both sides, and 

 in the shape of the silver spots ; and this holds in both sexes, as may readily be 

 seen by comparing the figures o£ Satyrus (Vol. I., Plate 40) with the figures now 

 given of Marsyas. Satyrus is not an imcommon species over large sections of 

 the continent. It is found throuifhout the Rockv Mountains, and to Vancouver's 

 Island. To the eastward its range is at least as far as Ontario, Mr. T. L. Mead 

 having taken two examples a few miles north of Port Hope, in 1874. It should 

 be borne in mind when estimating the proljal)ilities of dhnorphism, that in the 

 only species of Grapta in which this relation is established, viz., Interrogationis 

 and Comma, both the dimorphic forms are found wherever one is found, and 

 they agree in size, in tlie markings of the upper side, and in the form of the 

 silver spots. In Comma there is an agreement also in shape. The difierences 

 in both species are found In the coloi-atlon of the two sides and in the mark- 

 ings of the under side only ; and in Iiiferrogntlonis there is a slight difterence in 

 shape, the primaries of one form being more decidedly falcated. If Marsyas, 

 then. Is really dimorjjhic with Satyrus, there should at least be some points of 

 agreement, and the presumption is fair that it would fly with Satyrus, and in- 

 habit the same localities. 



