PIERIS I. 



PIERIS NELSOXI. G, 7. 



Pieris Nelsoni. 



Male. — Expands 2 inches. 



Upper side white ; costal margin of primaries and bases of both wings dusted 

 black ; at apex of primaries and to second branch of median, serrated black 

 patches on ends of the nervnles ; and beyond, an extra-di.scal transverse row of 

 small spots, of which two are deep black ; namely, one in lower sub-costal, the 

 other in upper median interspace ; another spot in sub-median interspace is repre- 

 sented by a cluster of scales ; on the costal margin, the upper spot is joined to 

 the black marginal edging by a stripe of black ; on arc, a sub-oval black spot, 

 through which runs a whitish streak ; fringes white. 



Under side of primaries white, with a faint greenish-yellow tint over apical 

 area ; the markings repeated, those about apex diffused, gray-brown ; the inner 

 row.gray-l)rown, the lower spot, on sub-median interspace, as distinct as the 

 rest. 



Secondaries white, faintly tinted greenish-yellow ; all the nervures and branches 

 broadly bordered with gray-brown, especially those which include tlie cell, and 

 the branches of median and the sub-median ; indeed the interspaces are nearly 

 closed up below the cell ; beyond the disk these borders are joined by serrations 

 in the interspaces, most conspicuous from outer angle to upper branch of median, 

 but continued across the median interspaces. 



Body above covered witli long gray hairs, abdomen black on both dorsum and 

 sides ; imder side of thorax A'cllow-gray, abdomen white ; palpi white with many 

 black hairs ; antennaj black ; club black, tip green. 



From 1 i taken l)y Mr. J. W. Nelson, at St. Michael's, Alaska, June, 1881. 



Unfortunately no 9 was taken. The species is near CaUldice, Esper, but dif- 

 fers in the coloration of the under side, which .is gray-brown instead of green, 

 and on upper side in the shape of the cellular spot, which is a short oval, in 

 stead of a long curved bar, as in 2 (J 2 ? European Callidke before me (also in 



