Watt.- 5 — Study of New Zealand Entomology. 261 



anterior trapezoidal tubercle or wart, ii is beneath and behind i, and is 

 also included in the prothoracic shield, iii is immediately beneath i, and 

 is supraspiracular in the prothorax : it is below and posterior to the 

 scutellum, pre-spiracular, and bears 2 Hulit-eoloured setae ; it retains this 

 position and primitive form in the prothorax throughout the larval exist- 

 ence. In every stadium there is a minute secondary tubercle bearing a 

 single seta situated below and posterior to the large anterior trapezoidal 

 in tiie meso- and meta-thorax. v is beneath the spiracle and below iv. 

 is pre-spiracular in the prothorax and immediately beneath the scutum, 

 and in the abdominal segments is inclined to be post-spiracular. iv is 

 absent in the thoracic segments, but is close below and behind the spiracle 

 in the abdominals, vi is present in the thoracic segments above the base 

 of the legs, and posterior to v; in the 1st stadium is absent in the 

 abdominals, appearing, however, in the 2nd and subsequent stadiums in 

 the 3rd to the 7th abdominal segments inclusive, being situated in the 

 7th abdominal between v and vii but posterior to both ; in the other 

 -' gments mentioned is above the base of the legs, below 'mt posterior to v. 

 vii consists of a small group, one on either side of the upper margin of the 

 thoracic legs : is present directly beneath v in the 1st and 2nd abdominals ; 

 is absent in abdominals 3 to 6 inclusive : is below and slightly posterior to 

 v and beneath and anterior to vi in the 7th abdominal, viii is immediately 

 beneath vii — if anything, slightly anterior. There is no alteration in the 

 position of. addition to. or removal of tubercles after the 2nd stadium. 

 The spiracles are circular, with dark rims : small and light in colour dimng 

 the first two stadiums, but becoming oval and still less conspicuous in the 

 3rd and subsequent ones. A thick pile covers the body throughout the 

 larval period, becoming thicker and darker after each successive moult. 

 The setae, excepting those of the head, are at all stages spinulose. In the 

 latter stadiums the body tapers towards the head from the 7th abdominal 

 segment. 



Development of Larval Markings. 



Immediately after hatching, very pale ; hairs black, tubercles light- 

 coloured. Second day : General colour a dirty grey to the naked eve. but 

 of a green tint when examined under the microscope. Tubercles, scu- 

 tellum. and head black, mouth parts and central portion of the cheeks 

 brownish. Towards the end of this period two reddish-brown subdorsal 

 bands extend the whole length of the body, and include tubercles ii and 

 iii, each band being produced ventrally in order to include iii. In the 

 abdominal segments the posterio-dorsal margin of the stripes converge and 

 sometimes unite, forming a narrow transverse belt across the dorsum of 

 each segment. Reddish areas surround the tubercles. 2nd stadium : Head, 

 legs, and spiracles black. Subdorsal bands as in last stadium. Between 

 the subdorsal bands each segment has an anterior and posterior area of light 

 yellow, the intervening space being white. Body generally light yellow. 

 There is a narrow subspiracular line of reddish brown and a reddish area 

 surrounding tubercle iii. 3rd stadium : Narrow yellow medio-dorsal stripe. 

 Subdorsal stripes broad, black. Yellow spiracular line interrupted by a 

 large white area on each segment beneath the spiracle. Subspiracular line 

 narrow, very dark brown to black ; below this is a very narrow white line 

 with a narrow dark-brown line separating it from the ventral surface, 

 which is of a light-slate colour. 4th stadium : Dorsal line yellow with a 

 distinct reddish tinge. Subdorsal lines black and very broad. Spiracular 

 lines narrow and broken, reddish yellow. Beneath the spiracular line the 



