PAPILIO I. 



the shade of the ground color. Tliose from elevated regions are undersized, and 

 the bands are broader in pi'oportion. At the same time the ground coloi- is 

 paler. It is this upland form that has been named Alhanus. 



Eurymedon is found over the Pacific slope from Mexico to the borders of 

 Aliaska. Also in Vancouver's Island, and inland throughout all the Territories 

 as far as Colorado, where it has crossed the " divide " and made itself a home in 

 the valleys of the Platte and Arkansas. Mr. T. L. Mead, who collected in Colo- 

 rado, in 1871, considers this a rare species in that State. He writes: "A few 

 Eurymedon were seen near Turkey Creek during the first week in June, re- 

 sorting with Rutulus to the open woods and hill-sides whei'e flowers were 

 abundant." 



Mr. Henry Edwards says of this species : " It is especially common in all the 

 canons of the Coast Range and in the valleys of the Sierra Nevada. In Cali- 

 fornia it is double- brooded, the first appearing from February to April, and the 

 second from August to the last of September. In the warm days of March, it 

 may be seen flying quietly along the margins of the streams which flow from 

 the mountains. It is rather a shy insect, but occasionally a cloud of them may 

 be seen settled on the edge of a mud-pool, their wings erect and swayed about 

 by the wind like a fleet of boats with their sails set. In this condition, it is 

 easily approached and captured, but once alarmed, it makes a bold dash for the 

 tops of the trees, and is soon out of danger. I am led to believe that this but- 

 terfly is extremely rare east of this range of mountains." 



Eurymedon in all respects, save in color, is wonderfully like Turnus. The 

 shape is the same, and the arrangement of the bands and the form and disposition 

 of the spots. The caterpillars are however distinct. The two species are part 

 of a sub-group related to each other, as are the several species of Grapta that 

 are allied to C. album. 



