Watt. — Study of Xeiv Zealand Entomology. 



269 



being slightly posterior ; in the meso- and meta-thorax the position is some 

 distance beneath but anterior to i and ii, and the position of the two tubercles 

 reversed — that is to say, the upper one is anterior, instead of posterior as in 

 the prothorax. In the abdominal segments iii is pre-spiracular, below but 

 anterior to i ; appears to be absent in the 9th abdominal, iv is absent in 

 the thoracic segments, but in the abdominals is post-spiracular, immediately 

 beneath ii, and slightly subspiracular. v is a large tubercle in the pro- 

 thorax having one large and one small seta, is pre-spiracular and beneath 

 iii ; consists of a single-hair-bearing tubercle beneath iii in the meso- and 

 meta-thorax ; in the abdominals is subspiracular beneath iii, and in the 

 9th abdominal immediately beneath iv. vi and vii are coalesced in the 1st 

 thoracic segment, situated above the leg, vi anterior to vii ; in the 2nd and 

 3rd thoracics vii is situated above the outer posterior margin of the leg, 

 posterior to v ; is absent in the abdominals, vi is also absent in the abdominal 



Fig. 14. — Larval tubercles : 1st iustar. 

 Fig. 15. — Larval tubercles : 2nd instar. 



segments, viii is a very minute tubercle on the ventral surface anterior 

 to vii, immediately beneath v in the 9th abdominal. Two secondary setae 

 are situated on the ventral surface anterior to viii. 2nd stadium : The 

 thoracic plate is not distinguishable on the prothorax. Tubercles i, ii, 

 iii, v, and viii as in 1st stadium, iv now appears in the 2nd and 3rd thoracic 

 segments above and posterior to v. A small secondary tubercle is situated 

 just beneath and slightly in front of v in the meso- and meta-thorax. 

 vi appears in the first seven abdominal segments immediately beneath the 

 spiracle and beneath but posterior to v. vii in the abdominals is beneath 

 iv, immediately posterior to vi, except in the 6th segment, where it is 

 situated on the upper and outer margin of the leg. This is the final arrange- 

 ment of the tubercles, and remains constant throughout the 3rd, 4th, and 

 5th instars. 3rd stadium : Abdominal segments 6 and 7 are divided medially 

 into two equal subsegments. Pile exceedingly minute. 4th stadium : As 

 in stadium 3. Spiracles circular, excepting those on the first thoracic 

 and 7th and 8th abdominal segments, where they are inclined to be oval. 



