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jialer or lirigliter form aud a darker one, which are eoniiected liy intermediate shades 

 of colonr. The species, moreover, varies considerably geojfraphically, not only in 

 colour and external details, but also in the genitalia of the male. All races, 

 however, are sharply separated from ('. anflrei in the genitalia of both sexes. The 

 early stages, too, which we know from North India and Java, are very diiferent 

 from those of (\ umliri. 



Imago. Both sexes vary from dark olive-brown without any tawny or 



yellow shade to bright ochraceous ; the brightest specimens are more tawny than 

 the palest individuals of C. andrei. The differences mentioned nnder C. nmlrei are 

 generallv sufficient for separating the two si>ecies. In doubtful cases the genitalia 

 are a sure guide. 



Genitalia. Male : The tenth tergite (x. t., fig. ij narrower in lateral view 



than in C. andrei. The apical lobe of the clasper («, figs, h and i) broader 

 and the snbapical lobe (4) much narrower, the latter almost in the same plane 

 as the surface of the clasper, being but slightly twisted and appearing pointed 

 in a ventral aspect {I, fig. h). The penis-funnel (p-f, fig. i) is dorso-laterally 

 produced into a flat triangular process (/o), and bears ventrally in the centre a 

 single process of variable shape (figs, a — f) instead of the lyra-shaped fork of 

 r. amh-ei. The penis-sheath (p) is similar to that of C. andrei, but the tubercle 



placed subdorsally on the right side is situated closer to the apex. Female : The 



sinus in the centre of the postvagiual ridge is much narrower than it is deep. 



Cocoon. Smaller than in C. andrei and more yellow, generally spun up 



in large clusters. It varies much in texture, being an open network in some 

 specimens, while in others it is opa([ue with a very variable number of pores. 



Chrysalis. Smaller than in C. andrei, more densely and deeply punctured in 



parts ; antennae and upperlip narrower ; cremaster as in C. andrei, obtuse, with 

 thirty to forty strongly curved hooks, by means of which the chrysalis is fastened 

 to the cocoon. 



Larva. ^Before first moult blackish above, pale yellow beneath, without 



sharply defined black spots; dorsal tubercles of eleventh segment nearer together 

 than on the other rings, but remaining quite separate in all the stages. From 

 the second stage onward the head and partly also the abdominal legs red, 

 otherwise the second, third and early fourth stages nearly quite black ; numerous 

 whitish granules ap[)ear behind the tubercles, and a smaller number in front of the 

 tubercles, each bearing a long hair ; no granules and hairs on the intersegmental 

 membranes. These granules and the tubercles later on are more or less surrounded 

 with red, so that the full-grown larvae are black with red belts, the head, 

 abdominal legs, a broad ventral stripe, and a lateral stripe being also red. All 

 the tubercles with the central hair long, white, and twisted, the bristles of the 

 snbstigmatical tubercles being all long aud thin. As the bristles on the 

 numerous granules are also long and much thicker than in ('. andrei, the larva 

 of C. trifenestrata looks almost woolly. 



Food-plants : oak, cherry, ]ilnm, blackthorn, etc. In its native country 

 Marhilus odoratissima seems to be its favourite tree. 



We know the larvae and cocoons from Java and North India. It aj)pears 

 to us doubtful if the larvae from the Audamans, Ceylon, Nilgiris, aud Philippines, 

 from which countries the caterpillar of C. trifenestrata is not yet known, will 

 turn out to be identical with .lavan and Indian examples. The imagines are 

 readily distinguished by some slight dili'ereuces. 



