the Pupa of Trochilmm andrcnmformis. 479 



The pupa-shell is 19 mm. long, the segments are extended and the 

 shell curved, it might be 20 mm. if straight, 16 mm. with the 

 segments contracted. The width is about 3 mm. from front of 

 mesothorax to fourth or fifth abdominal segment, thence it tapers 

 regularly to about I'l mm. at crown in tenth segment. 



The maxillse extend down to 7 '5 mm. from front and include 

 basally a lozenge of labrum (palpi) of 1 mm. long, divided by a 

 median line. The wings and second legs reach 0'5 mm. further (to 

 8'0 mm. from front), and the third legs extend by themselves 1 mm. 

 beyond this to 9"0 mm., i. e. as far as fifth abdominal segment, but 

 the flattening of abdominal ventral aspect shows that in some 

 attitudes it would reach to quite end of sixth. The first femur is 

 quite a large piece nearly 2*0 mm. long between the maxillse and 

 the first leg (tibia) which reaches about 1"5 mm. fv;rther, these abut 

 forwards against the eye-pieces and the maxillary palpus, which 

 stretches inwards here from the antenncc, and almost shut out the 

 second leg. The maxillary palpus is a transverse slip about 0*4 

 mm. long, about 0'12 mm. wide against antennae narrowing inwards ; 

 it has a raised sutural margin and has transverse lines of fine points. 



The labrum is pointed below and is very large in so far that it is 

 not well marked ofl^ from the face and so reaches up to the beak ; 

 the mandibles are comparatively narrow slips, meeting each other in 

 the middle line by their pointed extremities. The beak is a minute 

 sharp point in the middle of the projecting and rounded front. The 

 antennaj reach down to the same length as the maxillse. In this 

 dehisced specimen they are of course out of their grooves and in fact 

 twisted away backwards, as often takes place in these Truchilia. 

 There is a pair of hairs on the labrum (lower jjart of face), another 

 pair above, and a hair at the base of each antenna), about 012 mm. 

 long. 



The antennal segments are distinctly marked ofi". The maxillse 

 also have many transverse markings like fine dotted wrinkles. 

 Poulton's line is well marked, the j^ortion beyond it at the apex 

 being about 0-3 mm. long. The hind-wing is about 0-4 mm. broad 

 at its base, and continues slightly narrowing for nearly 2 mm., then 

 does so more thoroughly, but leaves a fine margin all along round to 

 the apex of fore-wing or nearly so. The dorsal head-piece is nearly 

 0-5 mm. wide (on either side, I'O mm. right across), about 0"25 mm. 

 longitudinally in middle line, pointed laterally. It has, like the 

 prothorax, and the front of the mesothorax, a much raised sutural 

 border, and has a ridge across it marking ofi" the outer angle. The 

 prothorax is similar in form, each side I'O mm. wide and 0-4 mm. 

 long medially. The mesothorax is 2-6 mm. long with a central 

 raised suture and a groove with raised inner margin extending back 



