316 



THE entomologist's RECORD. 



presumably i and ii, of which i is situated about the centre of the 

 segment, and ii lower and well to the rear. The set* on these are very 

 long, and inclined slightly backwards. On the anterior margin, and often 

 hidden from view when the larva is quiescent, is an extremely minute 

 tubercle with a short seta, which for descriptive purposes I shall call ia. 

 What I take to be tubercle iii is situated about three-quarters of the 

 distance between spiracle and tubercle i, rather nearer the anterior- 

 margin ; immediately posterior to it is another small tubercle with a 

 minute seta. The space between these and the trapezoidal tubercles 

 is occupied by two lenfcicles, the larger of which is directly above 

 tubercle in, and midway to tubercle i ; the smaller lenticle is lower 

 down and immediately above the smaller tubercle. On the subspiracular 

 flange are situated three tubercles, of which the central one, directly 

 below the spiracle, is the largest, and bears the longest seta The 

 anterior tubercle is in a direct line with this, but the posterior one is 

 considerably higher on the flange. The marginal flange also bears two 

 small tubercles. The 1st and 2nd abdominal segments are distinguished 

 by the omission of the small tubercle behind tubercle iii, and on the 

 6th abdominal the large lenticle occupies a position on the posterior 

 margin ; otherwise, the arrangement is similar. The 7th abdominal 

 segment is further modified by the omission of tubercle ii, as well as 

 the smaller lenticle and the tubercle below it, w^hilst on the 8th ab- 

 dominal, only one tubercle— that in the trapezoidal region— remains 

 above the spiracle. The group of these on the flange has, however, been 

 augmented by a fourth, situated in the extreme lower posterior corner. 

 On the 9th abdominal is a small depression which bears a similarity to 

 an anal plate, but does not appear to carry any tubercles. This is 

 bordered in the rear by the seeming continuation of the flange, bearino^ 

 a double row of three tubercles on each side. As regards the thoracic 

 segments, the metathorax resembles the 1st abdominal segment but 

 has tubercle la much more prominent. The smaller lenticle Ts wantino- 

 and the anterior tubercle on the flange is moved up in a line with the 

 posterior one, leaving the central one much lower. In the place of 

 the spiracle is a small tubercle with seta. On the mesothorax we 

 And tubercle la greatly increased in size and moved backwards ; tubercle 

 ill has been moved up dorsally, so that these two tubercles with the 

 lenticle between, form a group of three in a single straight line on the 

 first subsegment. Behind these, on the second subsegment, are 

 tubercles i and n. The further arrangement corresponds with that of 

 the mesothorax. On the prothorax the thoracic plate is shield-shaped 

 the anterior margin being rounded, the sides then sloping back with a 

 shghtly concave margin to a point in the centre of the posterior 

 margin, the whole situated in a fairly deep depression, and of a similar 

 colour to that of the skm. On the anterior margin are two small sets 

 bearing tubercles flanked by two large lenticles. Posterior to these 

 and extending across the whole plate is a row of six tubercles, the two 

 innermost bearing set^. On the posterior lateral margins are situated 

 two fairly large tubercles with setaj. Anterior to this plate, and parallel 

 with its margin, is a row of four tubercles on each side. Lateral to 

 these are two further tubercles, and posterior to these latter, is situated 

 the spiracle. As far as could be ascertained, the prolegs bear only two 

 hooks, one anterior and one posterior. The hooks on the true legs are 

 very much curved inwards. Duration of instar 14 days. 



(To be continued.) 



