II 



of an inch and a lialf. \\1ien deposited on the inner surface of 

 the leaf-sheaths, of course, it is only on those which have sepa- 

 rated at the top to allow the entrance of the moth. An egg is 

 oval-oblong, about 0.75 mm. long and 0.25 mm. wide, upper 

 surface convex, finely reticulated, and with three to seven nearly 

 parallel longitudinal carinae ; whitish, or more or less pearly 

 iridescent. The length of time before hatching is about two 

 weeks or more. The length of the larval period is quite long 

 considering the size of the larva. One which I reared becanie 

 full-grown in eight weeks from timie of hatching. 



The full-grown larva (Plate II, Figs. 4, 5) is about 12 to 15 

 mm. It is cylindrical, with the head and the anterior segments 

 about the same width as the rest of the body. It is of a dirty 

 whitish color : head pale reddish-brown and eyes dark. The 

 head is horizontal and somewhat retracted into the segment be- 

 hind it, which is somewhat infuscated ; there arc also some fus- 

 cous spots on the sides of this, and the next segment. Tubercles 

 fuscous-centered at the base of hairs : tubercle ii about twice 

 as far from dorsal median line as tubercle i : iii just above 

 spiracle ; iv posterior to spiracle and lower : v below spiracle and 

 anterior of it. Spiracles circular, pale yellowish, minute. 



The pupa (Plate II, Fig. 6) is 5.5 to 6 mm.; very pale yellow- 

 ish-brown, eyes darker; head with a compressed protuberance in 

 front which is rounded above, but with a sharp angle below, this 

 is darker than rest of pupa ; fine hairs situated same as on cater- 

 pillar ; all of abdominal segments except first and second movable ; 

 near basal dorsal margin of segments four to eight is a sligiit 

 transverse ridge armed with a row of numerous short spines 

 which probably assist in emerging from cocoon ; cremaster has 

 two short, stout spines on dorsum, slightly curved forward, and 

 two short conical ones ventrally, wide apart ; wing-cases extend 

 to about apex of fifth abdominal segment, free beyond third seg- 

 ment ; antenna- and leg-cases extend about two segments farther. 



The pupa is formed within a cocoon made in the san.ie location 

 in which the larva has been feeding (Plate I, Figs. 3. 4). It is 

 6 to 10 mm. long and usually has an outer layer of fibrous material 

 from the leaf-sheath where the larva fed ; sometimes it is covered 

 with a layer of pellets of excrement instead, and if the larva 

 has fed on the outside of the leaf-sheath of a variety of cane 



