1922.] H 



clasp tho mnrpiu of the liole along which tlie body is extended, the last 

 se}i'ments being sometimes free and bent ventrad. 



The egg-shells found beneath the leaf showed them to be laid solitarily, in 

 no 2)articulai' position as regards veins, etc., but not near the edge of the leaf. 

 A very small larva about i2'6mni. long is, contrary to the rule just noted, 

 curled S'^'lis-P'^d, the true legs and first pair of prolegs grasping the edge of the 

 hole ; the same curve, a little exaggerated, raises the rest of the body from 

 the margin to the middle of the hole, the last segment being bent vertrad. 



The larva is transparent, colourless except for the green tone from 

 intestinal contents; the head is faintly rufous, darker when seen directly, paler 

 by transmitted light, the eyes black. A larva 7 mm. long is transparent like 

 the younger one mentioned, but shows green intestinal contents; the head- 

 colours are the same, subsegmentation distinct. Two larvae, 11 and 12 mm. 

 long respectively, are not so transparent, having a black mark on the vertex and 

 a dark tint obscuring the wliite dorsal region. A larva, apparently full grown 

 and looking about for a place to spin up, has the dark, rather longitudinal 

 mark on the vertex, the thoracic segments dorsally green, the forward abdo- 

 minal segment very pale reddish brown, the others darker and all with a faint 

 fuscous tone. All examples are transparent enough for the longitudinal and 

 ether trachefie to be very conspicuous. Below the spiracular line, in all the 

 larger larvae, are a series of not very dark markings or slight eminences ; they 

 may vary a little, but almost always occur on the last two thoracic and hrst 

 iive abdominal segments. These marks are characteristic, and probably dis- 

 tinguish this larva from others with which it might be confounded. The 

 reddish colour of the forward abdominal segment occurred in all larvae noted 

 as ready to go down, though the subsegnieutation is very distinct ; probably for 

 this reason it is very difficult to decide which are the intersegmental incisions. 

 The skin-armature presents a number of hair.-*, singly over the dorsum, each in 

 a circular space clear of the ordinary cellular skin-structure and apparently 

 representing primary tubercles. The thorax has a rather complicated number, 

 it being difficult to recognise the true margins of the segments ; there appear 

 to be a non-micropylar one on each aide of dorsum, and others, stated in 

 subsegments, on the prothorax, 3.0.2, mesothorax, 2. 3. 0. 3, last very small, 

 nietathorax, 2. 4. 0. 3, last very minute, and first abdominal segment, 3. 3,0. 3, 

 these very minute. The further abdominal segment nearly the same, 1-t 

 rather larger hairs on last segment, one of them in dark anal plate. There are 

 5 hairs on the lateral black marks and 4 or 5 others on the sides and a few 

 on prolegs. The dark dorsal areas and lateral black marks show a tessellated 

 pavement of cells, rather spindle-shaped ; L)ng axes transverse and to .'■ome 

 extent in transverse rows, up to 13 or 14 rows to a subsegment ; each cell is 

 crowded with dark dots. 



Though the eggs have all the aspect of those that have a small portion 

 trapped in the incision in the leaf, their disposition appears to be different. 

 It is not very difficult to separate them from the leaf, and on removing the 

 latter a portion of leaf cuticle was torn, showing that though it is very 

 slight and shallow the eggs are really in a pocket, of which this scrap of 

 cuticle is the upper portion, too short to do more than reach a little way lij) 

 the egg. The eggs themselves are about 0*92 mm, long and 0'4 wide. Thejr 



