254 
II. 
The larva in the third stage: As all of the larvæ were 
dried up and shrivelled I cannot give the exact length, but I think 
that the fullgrown larva measures about 12—13 mm or perhaps 
a little more. The shape of the larva is fusiform, the posterior 
end obliquely truncate, in the middle deeplv excavated with the 
posterior spiracles in the centre of the excavation. The head has 
on each side a pointed optical tubercle and a little flattened papilla 
with some sense facettes. On each side of the mouth there are 
some larger spines and some rows of minute spines. The base of 
the mouth-hooks is broad, anteriorly truncate and posteriorly with 
a short rounded tooth; the tip is regularly curved; the anterior 
pharyngeal plates are of the same length as the mouth-hooks, at 
the upper margin of each of them is found a forward pointing 
spine, which is smaller than in the larva of M. torquans \ the 
posterior pharyngeal plates are about 6 times as long as the 
mouth-hooks. The spine armature is found on the anterior margin 
of segments 2—11 and on the posterior margin of segments 4— 
11, on segment 11 the spines are distributed al¬ 
most over the whole segment; segment 12 is 
provided with spines except in the excavation 
at the end. The anus lies on the ventral side 
of the last segment. The spiracles are different 
from those in M. torquans : the anterior (Fig. 1) 
by ending in two not prominent rounded knobs 1 ), 
and the posterior (Fig. 2) by having a less re¬ 
gularly rounded frame and more sinuated respi- 
ratory areas. The puparium (Fig. 4). Length 
7—8 mm; cylindrical, somewhat pointed at the 
ends; the posterior end deeply excavated, the horders of the ex¬ 
cavation sharp; brown, not shining, the surface finely rugose, the 
last segment strongly rugose; the anterior spiracles not prominent; 
no trace of pupa spiracles. 
M In M. torquans the spiracle terminates by 4 rather long knobs. 
anomala. Larva. 
3. Stage. Ante¬ 
rior Spiracle. 
