1883.] 65 



paler inclining to greyish-drab ; the shining head is delicately reticulated 

 with darker grey-brown, the plate on the second segment is a trifle 

 darker than the ground of the back and glistens slightly, and is tra- 

 versed by the dorsal and sub-dorsal lines ; the dorsal line is pale, and 

 very thin, but well defined throughout its course by running between 

 two fine lines of dark grey-brown which rather conspicuously relieve 

 it ; a little above the sub-dorsal region the ground is broken by a 

 stoutish paler line, then after an intei'val or what may be termed a 

 stripe of the ground colour comes the sub-dorsal thin line, of a paler 

 tint, closely followed by two other similar lines though more sinuous 

 in character, these three are equi-dlstant ; from thence midway toward 

 the spiracular region runs a stout pale line ; the spiracular stripe like 

 the belly is of a pale somewhat greyish-drab tint well defined with an 

 edging line both above and below of still paler tint ; the black dots of 

 the trapezoidals are so minute as to almost escape notice, but the single 

 black dots of the row along the side are larger, also the row of two's 

 lower down in line with each spiracle situated between them, this is 

 whitish tenderly outlined with black ; other very minute black dots 

 follow beneath, the legs are of the same tint as the belly and have dark 

 brown hooks. 



The pupa is ^\ lines in length, of a slender, rather cylindrical 

 figure, the head is rounded above and produced a little obtusely 

 beneath, the thorax is rather the stoutest part, otherwise it is nearly 

 equal in substance throughout; the wing covers of moderate length, 

 wrapped close to the body, the moveable rings of the abdomen are 

 deeply cut, and each with an anterior margin of punctate roughness 

 on the back, the last two rings taper to the anal tip, which is furnished 

 with two very minute thorny points and curly-topped bristles ; its 

 colour at first is light brown, and soon grows reddish-brown, and in 

 twenty-four hours the darkest mahogany-brown, later to blackish - 

 brown, the surface rather shining. 



After all the insects were bred, an examination of the interior of 

 the stems showed one piece of four and a half inches long having a 

 knot at one-third of the length, and in this shorter division one pu- 

 parium, and a pupa skin with its tail near the knot, on the other side 

 of the knot in the longer division two pupa skins, one beyond the other, 

 lying reversed so that the tails of all three pointed towards the knot; 

 a diaphragm of silk mixed with gnawed particles from the lining 

 membrane of the stem was at either end of each puparium, which in 

 length varied from nine to eleven lines, and comfortably held the 

 shrivelled-iip larval skin, the diaphragm in front of the middle occupant 



