CARNIVOROUS BUTTERFLIES CLARK 467 



terior margin of the segment. There is one each in the mesothorax 

 and eight following segments. The last and largest of these, though 

 in the sixth abdominal segment, appears to belong to the seventh 

 and following segments, which are without ganglia. 



The prolegs are of much interest when compared with those of 

 the full-grown larva. They have a rather thick cylindrical base, 

 and have the usual form of one row of crotchets, facing inward, 

 13 to 17 in number. On the anal claspers these are much smaller 

 and few in number (9), and are similarly in one row. The true 

 legs are short and thick, and terminate in very curved claws. 



The head is small, about 2.5 mm. in diameter; it has in front (on 

 the epicranium, clypeus, and labrum) a number of short stiff hairs, 

 the largest about 0.08 mm. in length. None were seen elsewhere. 



The antennae are rather longer than this, but happen to be tele- 

 scoped. The second segment is not in evidence. As found the 

 antennce are about 0.06 mm. long and 0.04 mm. thick, with a ter- 

 minal armament of bristles, amongst which the third segment is 

 not clearly discriminated. 



The head itself is rather dark in color from being well chitinized; 

 beneath it are three circles, carrying jointed palpus-like appendages 

 of which the central one is largest and represents probably the 

 labrum, with the other two as labial palpi. The two lateral ones, 

 according to Doctor Chapman, are, however, probably the max- 

 illary palpi, especially as they appear to have another ill-developed 

 process. 



The jaws are long, and cross one another for some distance. Each 

 seems to consist of a straight conical process with only one sharp 

 terminal point — a simple spike or dagger. 



Doctor Chapman remarked that the large larva is a very differ- 

 ent object. Looking down on its back there is to be seen an approxi- 

 "mately flat surface, oval in form, rather narrower in front than be- 

 hind, with a margin smooth, regular, uniform, and of the same tex- 

 ture, etc., all around, with no trace of segmentation. It measured 

 23 mm. in length b}'^ 15 mm. in width. When placed on its flat 

 dorsal surface it stands up above the flat supporting surface about 

 5.0 nun., and shows a level, but not smooth, top, and smooth and 

 sloping sides. The amount of slope may be seen by a comparison 

 of the top and bottom; the top (the ventral surface of the larva) 

 is 18 by 7 mm., as against the 23 by 15 mm. just mentioned. The 

 slope is almost nil at the head end, and therefore so much the more 

 elsewhere. 



The dorsal surface and the sides are brown, hard, and chitinous. 

 The sloping sides show little indication of segmentation, but at the 

 margin of the open (and soft) ventral area they present a series 

 of dark markings very slightly raised on rounded elevations, but 



