PARNASSIUS. 15 



secondaries with a reddish spot at the base ; abdominal edge 

 covered with a space more deeply blackish, ascending in the form of 

 an anchor or hook, to the extremity of the discoidal cellule ; fringe 

 intersected with black ; antennae strongly annulate with black. 

 Female a little larger than the male, wings powdered with blackish ; 

 pouch of the under side of the abdomen small, brownish, not 

 prominent, formed of two wrinkled valves, separated by a longitu- 

 dinal groove. 



Rocky Mountains. 



Boisd. 



3. P. clodius Menetries, Voyage de M. Wosnesjensky. P. clarius, Boisd. 



Very near to P. clari us Eversm. but larger; wings of a dead 

 white, a little yellowish (the transparent part and the row of spots 

 on the external edge as in clarius.) 



On the under side, the primaries have the same black spots as in 

 clarius, but the two discoidal spots of the anterior edge are very 

 narrow ; the base is widely powdered with black ; near the internal 

 edge there is a well defined small black spot. 



The secondaries have the base powdered with black, the two 

 ocelli are small and irregularly round, pale reddish, with a deep 

 black edge ; no anal spot. 



Under side paler white and glossy ; with the same markings as 

 above but less distinct. 



The four spots at the base of the secondaries are pale red, each 

 one limited outwardly by a black trait. (These spots do not occur 

 in P. clarius.) Towards the anal angle, there is a cuneiform spot 

 of a similar red, with a black line above and below it, and near it 

 and more outwardly, there is a black point. 



The whole body is covered with long, yellowish hairs, which on 

 the front, the anterior of the thorax and under the abdomen are 

 shorter, closer and russety. Expands three inches and a half. 



California. 



Menetries. 



Fam. II. PIERIDAE. 



Larva slightly pubescent, somewhat attenuated at the 



extremity. Perfect insect with the abdominal edge of the 



secondaries without a concavity. Discoidal cellule closed. 

 Hooks of the tarsi unidentate. 



