12 LEPIDOPTERA OF NORTH AMERICA. 



dered with whitish atoms ; tail much more edged with yellow on 

 the internal side than above ; palpi yellowish white ; this color con- 

 tinues on the sides of the thorax, which is black. Abdomen black 

 above, yellow in the sides or below — a ray in each side. 

 California — Oregon ? Expands G2 mill. 



Ldcas. 



16. P. machaon Linn. Figured by most European authors. 



Upper side yellow, with a rather wide black border, sinuate 

 within, divided on the primaries by a row of eight yellow marginal 

 points and in the secondaries by a marginal row of six lunules of 

 the same color, of which four or five of the intermediary are largest ; 

 all these lunules are preceded by an orbicular spot formed of blue 

 atoms ; the anal angle is marked by a reddish' yellow ocular spot, 

 surmounted by a whitish violet crescent. Primaries with four 

 black spots along the upper edge, of which the outer one is the 

 smallest and nearly round ; the two following are transverse, not 

 passing the median nervure ; the fourth is very large, occupying 

 all the base, and powdered with yellowish gray, as well as that part 

 of the border comprised between the marginal points and the 

 ground color ; the branches of the median nerve black and dilated. 

 Secondaries have a black arc at the extremity of the discoidal cel- 

 lule ; the abdominal edge black, powdei-ed with yellowish ; the con- 

 tour with short teeth and a black linear tail of moderate length, 

 obtnse at the extremity, bordered witli yellow in the internal side; 

 emarginations bordered with yellow as well as the sinus of the pri- 

 maries. 



Under side nearly similar to the upper with all the nervures 

 black and the yellow more mingled with the black and occupying 

 more space. The blue spots of the secondaries are more narrow, 

 somewhat lunulate ; the second, third, and sometimes the sixth are 

 each surmounted with a russety spot. Body yellow, with a dorsal 

 band ; antennae black. 



California — Europe — Asia. 



BOISD. 



17. P. villiersii Boisd. Boisd. et Lee. pi. 14. P. devillursi Godt. 



Nearly same size as P. troilvs. Wings greenish blue, shining, 

 dentated, emarginations white, a marginal range of bluish lunules, 

 much smaller on the primaries than on the secondaries. 



Tail moderate, spatulate. 



