PIEHIS MEN API A. Felder. 
Wein. Ent. Monat. IIP. p. 271, n. 18. ( 1859. ) 
Rei.se Nov. Lep. II. p. 181, n. 172. t. 25, f. 7. ( 1865. ) 
Pieris Tau. Scudder. Proc. Boston Nat. Hist. Soc. VIII. p. 183, (1361.) 
Pieris Ninonia, Boisd. Lep. Cal. p. 38, n. 5. ( 1869. ) 
Nenphasia 3fenapia, Behr Trans. Am. Ent. Soc ; ( 1869. ) 
Edwards Butterflies of N. Am. Part 8, (1871.) 
Female. Expanse 2 inches. 
Antenna.' black, throax black with white hairs ; abdomen blackish above near the thorax, 
rest white. 
Upper surface white, primaries, costa edged with black rather broadly till to the disea! 
vein on which it is continued to its extremity; a black border with inner edge sinuous, 
broader at apex and diminishing to a mere line at inner angle, extends from costa downwards, 
within this border are six irregular white spots, the one nearest the inner angle being much 
the smallest. 
Secondaries have an irregular sub-marginal black line, from which to the exterior margin 
the veins are edged with black, which widens at their tips, forming as it were six large white 
spots, from the space between the veins and sub-marginal line and exterior margin. 
Under surface white, primaries nearly the same as above, spots in border a little larger. 
Secondaries, veins all margined with brownish black ; sub-marginal band as above ; costa and 
interior margin edged with rose or flesh color ; a row of marginal lunulate spots and a line 
of same color running parallel with and adjoining the inside of the sub-median nervure. 
This species, of which I am not aware any figure of the female has heretofore been pub- 
lished, has had almost as rough a time of it as had Colias Eurydice ; it is evident, that until 
very lately, the female was entirely unknown to Lepidopterists in this country ; Mr. W. H. 
Edwards, in his Butterflies of N. America, part 8, gives three excellent representations, all 
males, although one of them he supposed was a female, and described it as such in the accom- 
panying text. Scudder, in the Proc. Boston Soc. Nat. History, 1861, where he redescribed it 
under the name of Pieris Tau, gives elaborate descriptions of both sexes, of which he says : u a 
large number of specimens are in the Museum of Comparative Zoology obtained by Mr. 
Agassiz at Gulf of Georgia now it is evident from the description that either all of the 
specimens above alluded to were males, or else Mr. Scudder gave them a very careless examina- 
tion, indeed, for the only difference he mentions between the sexes is that on the upper surface 
of secondaries the female “ repeats slightly at the outer angle, the markings of the lower sur- 
face j” then, after stating that “ it represents in Washington Territory the P. Sisimbrii Boisd. 
of California,” (which it does not resemble a bit, either in size, shape or markings,) he goes on 
to say that the way he distinguishes between males and females in his foregoing description 
was founded on the “cut of the hind margin of secondaries he then goes on and gives some 
