76 R. NEWSTEAD—THE PAPATACI FLIES (PHLEBOTOMUS) 
but as no sections were cut it is impossible to determine their true structure by 
examining them in optical section only. Thoracic and abdominal spines (PI. I, 
fig. 10) much longer and stouter than those in the earlier stages; apices 
narrowly dilated and transparent, the remaining portion clothed with minute 
stiff hairs; these hairy spines are arranged in more or less regular transverse 
: DSA 
. Sten eet 
VENTRAL 
PROFILE 
Fig. 19.—Head of larva of Phlebotomus papatasii. ant, antenna ; md, mandible ; mp, 
maxillary palpus ; /p, labial plate. 
rows, there being four or five on each side of the median line. Head with 
several large spines similar to those on the abdominal segments, but they are 
pointed instead of being dilated at the apex; besides these hairy spines there 
are also several rather long stout hairs, four of which are frontal. Sucker feet 
similar to, but relatively larger than, those in the first instar. 
Length, 2-3°28 mm. 
Pupa. (PI. I, figs. 11, 12). When empty, clear ochreous buff. yes in life 
black. Abdomen curved upwards distally in varying degrees, but not apparently 
so distinctly S-shaped as in P. perniciosus ; considerably wider in the thoracic 
region than at the distal segments of the abdomen; integument clothed 
with minute squamose spines (PI. I, fig. 15), which are most conspicuous on the 
