( cviii ) 



Eroessa chilensis, belongs by its goblet-shaped lamina, with 

 rounded base and minute disc, to the Euchloe type. It is 

 perhaps most like the plume-scale of Euchloe creusa, but is 

 much larger than that of any Euchloe known to me. 



The South American genus Hesperocharis is provided with 

 plume-scales which also in some respects resemble those of 

 Eiochloe. The laminae are U-shaped, with parallel sides and 

 a rounded base. The disc is small, in some species tending to 

 be triangular. The laminae show, however, little indication 

 of the goblet form seen in Eroessa and some species of Euchloe, 

 and they further differ from most species of the latter genus 

 in having a very sharp apex, which contrasts strongly with 

 the blunt and rounded distal margin seen in Euchloe geuutia, 

 pima, cardammes, creusa, bellezina and eu-pheno. They are 

 usually broad in proportion to their length, and vary in size 

 from species to species, H. marchalii and H, erota marking the 

 extremes among the species known to me, the former being 

 the largest. Mathania agasicles, so far as its scent-scales are 

 concerned, is a Hesperocharis. 



Daptonura, another South American genus, suggests by its 

 neuration and some other features a relationship with Belenois. 

 This suggestion, however, is not borne out by an examination 

 of the plume-scales. These in Daptonura are of an entirely 

 different type from that of Belenois, and indeed of nearly every 

 other genus of Pierines. They are abundant in all fonns of 

 Daptonura, and are of the same character throughout the 

 genus, showing but little difference from species to species. 

 They are more like hairs than scales, being long and narrow, 

 generally club-shaped, and possessing no disc. They taper 

 gradually from the distal extremity towards the base, which 

 ends in a footstalk like that of an ordinary scale. The distal 

 extremity may be either (1) roun<led, (2) truncate or slightly 

 excavated, or (3) two-lobed. The fimbriae are few and very 

 short ; in no case are they found at the centre of the distal 

 margin, but project only from its sides, occasionally from one 

 side alone. The rounded end in (1), the truncated border or 

 slight concavity of (2) and tiie intei--lo])ular notch of (3) are 

 always free from them. No connection is traceable between 

 the fimbriae and the chitinous framework of the scale. In 



