New Species and Subspecies of Pierinae. 15 



California, Lat. 26° 5 N., by Mr. Osbert H. Howarth, so long 

 ago as March 21, 1898. They have hitherto remained 

 undescribed, but were mentioned by me in Proc. Ent. Soc. 

 Lond., 1913, p, cxiv. 



P. howarthi belongs to the same section of Pieris as 

 the preceding species. Its nearest relatives are P. josepha, 

 Godm. & Salv., P. josephina, Godt., and P. amaryllis, Fabr. 

 (Central America and West Indian Islands). It is quite 

 distinct from all of these, being much smaller, and 

 differing markedly on the underside. It resembles P. 

 josepha and P. josephina in the character of its plume-scales, 

 which are some of the longest known to me in the whole 

 sub-family of Pierines. 



Note. — Owing to a prolonged absence from England, 

 the author was unable to superintend the printing of the 

 Plates which have been prepared from Mr. H. Knight's 

 admirable drawings. A few very slight inaccuracies have 

 resulted, attention to which is called at the foot of the 

 Explanation of each Plate. 



Explanation of Plates I, II. 



[See Explanation facing the Plates.] 



