11 
The siphon tube is long and very thin ; *23 of body length. The siphonic 
index is 7. ‘There are about 10 spines in each row which are rather long and 
slender and extend over a little more than the basal third of the tube (PI. U, 
fig. 26). 
The nymph of A/elanoconion has distinctive respiratory trumpets, They are 
peculiarly long and narrow and project in a more distinct curve than do those of 
Culex. The end is more truncated than in Cu/ex and the opening is on this 
account more circular (Pl. I, figs. 8 and 10). 
Tentcrhynchus.—The ova of Tencorhynchus have been described by 
Stephens and Christophers.* They are laid in the form of rafts which are 
extremely long and narrow, and resemble in shape a racing skiff. 
The larva is found in natural waters where much vegetation is present and 
is often bright green in colour (PI. I, fig. 21). 
The head is comparatively small. The clypeus is conical and so differs 
from that of most larve. From the clypeus arise a few short, curved hairs. The 
antennz are well developed and resemble those of Cu/ex. The basal portion 
only is covered with spines (Z. tenax, Pl. II, fig. 16). 
The mental plate is highly characteristic, and was similar in two species. 
It is triangular in shape and the two free edges carry very fine teeth which are 
at least four times smaller than those of other larve. The mental plate of 
Tentorhynchus has a remarkable resemblance to a shark’s tooth (PI. III, fig. 4). 
The siphon-tube is peculiar, being extraordinarily long and thin (PI. II, 
fig. 27), "37 of body length. Siphonic index 12. There are about seven spines 
in each row confined to the basal tenth of the tube. The hairs arising from 
the tube are very short and insignificant. 
The nymph has respiratory trumpets which project anteriorly and nearly 
meet in the middle line (PI. I, fig. 11). The trumpets are large and pointed, 
with an oblique opening (Pl. I, fig. 13). 1 have seen no other nymph in 
which the trumpets project forward as they do in tentorhynchus. 
Mansonia.—The nymph of Mansonia uniformis has been figured a 
Theobald. The trumpets appear to project forward as in the last-mentioned 
genus. 
&deomyina.—Of the large number of genera in this sub- -family I am only 
able to describe a very few, and those imperfectly. 
Detnocerites.—Theobald has figured parts of the larva and pupa. The 
siphon tube is large. The siphonic index (from Theobald’s drawing) 5°6. The 
nymph has abruptly truncated trumpets. 
Howardina.—The nymph has somewhat conical and abruptly truncated 
trumpets (PI. i, fig. 15). 
Foblotta.—Thecbald has figured the head and siphon tube of this larva. He 
Cz 
