382 LÉPinOPTÉROLOGIE COMPARÉE 



Pupae. 



a) Male pupae. — The maie pupae of harrisoni and those 

 of denhami are very close to onc another; there are the following 

 différences observable. 



In appearance harrisoni cf is slightly less glossy, due to the 

 increase in the number of the little dépressions. The labrum is 

 a little larger, and, therefore, more prominent. 



The chief différences are seen in the anal armature. The two 

 side spines on the loth segment are larger and distmctly pointed 

 and the two spines at the tip are smaller and generally insigni- 

 iicant. Some of the harrisoni pupae hâve tv^^o extra latéral points 

 on the larger spine. Thèse are présent as two prominences in 

 denhami, in hirtaria, they are never more than indicated, whilst 

 in zonaria their présence is even less marked. 



b) Female pupae. — The coloration and pitting are but little 

 différent from those of the male pupa, and so need no description. 

 The pupa is shorter and dumpier than in hirtaria owing to the 

 stoutness and greater proportionate breadth derived from zonaria. 



Viewed from the side, the dorsal and ventral tapers are almost 

 the same in harrisoni and zonaria but in hirtaria the ventral area 

 is nearly horizontal. Taking the fourth abdominal segment as the 

 starting point, the curve to the head in zonaria and harrisoni is 

 much more regular and semicircular in outline. 



The anal spine in harrisoni forks after a gentle taper and 

 possesses no broad base. The two terminal spines spread and 

 hâve a larger angle between like zonaria. As in that species too, 

 the génital scars are neat. The antennas cases in zonaria arc 

 ridged longitudinally and the pectinations are not well marked; 

 those of hirtaria are not ridged but are strongly pectinated. 

 Harrisoni is distinctly intermediate. Just before the tip, the an- 

 tennae curve gently outward in hirtaria but not in zonaria, nor 

 so evidently in harrisoni. 



The base of the wing cases in zonaria and harrisoni is very 

 narrow, causing the costa in zonaria to be nearly horizontal ; in 



