A. K. (\\.MKRnN r)J3 



The hura (IM. I, \\<r. 2). 



Larva, newly hatchctl, about lO mm. in length, almost transparent, 

 with mouth apparatus, tracheae and alimentary canal distinctly visible 

 through the cuticle. Anal spiracles sessile with two slits apparently 

 communicating, shaped like a semi-inverted o^, thus t. Fleshy tubercles 

 on the ultimate segment not very distinct. Anterior thoracic spiracles 

 absent. Immediately befoio the first ecdysis the larva has increased 

 its length to 1"G mm. 



The second instar larva (PI. I, fig. G), smooth, with a pair of pro- 

 thoracic spiracles, o;ie on each side of the post-cephalic segment and 

 each divided into seven lobes. Posterior stigmata situated on the 

 oblique dorsal position of the ultimate segment with two slits (PI. 1, 

 fig. 7, p.sp.) just as in the first-stage larva, but constriction between 

 the two now more accentuated, slightly elevated. Paired tubercles 

 of the last segment are four in number (PI. I. fig. 7), with rather a large 

 but inconspicuous pair of flat adanal lobes {a.l.). On completion of 

 the second stadium, the larva has almost doubled its size, now^ measuring 

 2 "8-3 mm. in length. Following another ecdysis, the larva enters 

 the third stadium when, except for size, it resembles in all respects 

 the fully mature larva. Length 6 mm. 



The full grown larva (PL I, fig. 2) averages about 7 '5 mm. long and 

 rS mm. broad, with thirteen segments of W'hich twelve are evident, 

 of a dull yellowish colour, much wrinkled. On the cephalic segment 

 immediately posterior to the mouth booklets are situated the minute 

 two-jointed antennae (PI. I, fig. 4, a.), and slightly posterior to these 

 again and placed somewhat nearer to each other, is a pair of sensory 

 spots {s.p.). The prothoracic spiracles (figs. 2, 4:,pt.sp.) quite distinct, 

 with the number of lobes increased to eight. Definite areas on each 

 segment bear minute, closely-set locomotory spines, arranged lineally 

 in rows ; on the first two segments posterior to the head the spinous 

 areas are not so definite, but these bear anteriorly three or four regular 

 rows of spines encircling the segments. Ultimate segment has the pos- 

 terior aspect divided into two distinct areas, a dorsal oblique and a 

 ventral truncated, bearing in all seven pairs of small tubercles (PI. I, 

 fig. 3) arranged as in figure. The pair lying immediately below the 

 spiracles in the stigmatic field are slightly internal to the circumference 

 of the circle formed by the others. Posterior spiracles (psp) sub-sessile, 



