( 558 ) 



Tlie last tarsal Begment (SImi'p) bears above (as iu other Lepidoptcra) at the tip 

 some long' stitt' hairs curved ddwuwaids (PI. Xlll. f. l(i); tlicir number varies from 

 six to ten in IJn' above genera, while in other Si/mphaUnae the number is sometimes 

 reduced to four. In the smaller Ckaraxes and Eiilepis there are generally six or 

 seven apical bristles, while in the larger Ckaraxes there are mostly eight and in 

 Eiuuhthe ten. 



The underside of the last tarsal segment (PI. XIII. f loj is flat, aud is furnished 

 on each side with two rows of spines ; the external row of the outer side of the 

 segment (right-hand side in figure) is iu most Chara.ves and Eulepi» incomplete. 

 This difference in the development of the two sides of the segment, excm])lified also 

 by the sjjeeimens that have seven instead of six or eight apical bristles, reminds us 

 of the asymmetrical development of thi' more basal segments of the antennae whieh 

 have only the outer groove develo})ed, as explained on p. 4i)8 of this volume. The 

 incomplete development of the outer row of spines on the sole of the last tarsal 

 segment may stand in correlation with the asymmetry of the tibiae and femoru. 

 I cannot here enter njion the question if the tarsal segment as represented by 

 f. 16 (PI. XIII.) is a derivation from a segment with both sides symmetrically 

 furnished with sjiiues, the outer row of thi' outer side having partly become 

 obliterated, or whether the segment with fonr complete rows of heavy sjiines as 

 found in ('hai-'txi's tiridates is the youuger one. As the spines are devehtpiueiits 

 from hairs they form as such a specializatiou, and hence it appears possibL' that the 

 symmetrically s])ined tiridates segment represents a higher specialization tlian that 

 of Eulepis emlaiiiipiius (PI. XIII. f. 15), in whieh the outer row is not fully developed. 



The sole of tiie last tarsal segment is not sealed in the middle, but covered willi 

 very short and tine hairs : the last but one segment has a few scales in the middle. 

 There are also four rows of spines on the sole of this segment, but there appear (as 

 ou the three basal segments) some spines between the two rows of each side ; the 

 mmiber of intermediate spines is mostly larger at tlie inner than at the outer side 

 of the sole. 



The anterior tarsus of the male is very variable in length ; in Euxurdhe it is, 

 however, always very short, much shorter than in any species of the other three 

 genera. Though it appears to consist of one segment only on account of the dense 

 scaling, one finds, on removing the scales, that the tarsus is very often jointed ; the 

 tarsns varies individually from being one- to four-jointed. Sometimes there are some 

 spines present, but most individuals examined by me were n-ithont them. The 

 strong apical spines of the four posterior tibiae do not seem to lie ever rejn'csented 

 at the tip of the foretibia of Cliaruj-es, though they are found iu Falla. In 

 EiixaiUhe the short aud thick tarsns has the middle and apex below not scaled, and 

 the tibia bears many thin bristles. The anterior tarsns of the female of Ckaraxes 

 consists always of five segments (PL XIII. f. 17 — I'J)- f'le first segment is long, 

 and appears slightly twisted in eonseqneuce of being asymmetrically com])ressed ; 

 the others are short, and symmetrically, more or less strongly, compressed. The 

 underside of the first and second segments is more or less densely scaled, while 

 segments :i to 5 are not scaled beneath. The configuration of the ventral surface 

 varies according to species and groups, especially the height and outline of the 

 convex mesial portion of tlie sole. Segments 1 to 4 bear an ajiical jair of heavy 

 and another pair of smaller spines, besides some small spines farther liacU, which 

 vary in number individually, but are more numerous in the large African species of 

 Ckaraxes (tiridatts for instance") than in Enlepis ami the smaller Ckaraxes. At 



