9 
Group III. Adult mosquitoes showing scale arrangement typical of the 
genus Culex, but having larval characters recalling those of Stegomyza. Four 
species, all unfortunately undetermined, were noted. All the forms were found 
in natural pools. 
Speczes a.—Nymph trumpets, opening wide, somewhat resembling those of 
Stegomyta. 
Head rather broad, antennz like those of Stegomyza, but larger and having 
a few small spines. Basal tufts small and composedof a few hairs. Median 
and terminal spines abortive (PI. II, fig. 7). Mental plate resembles that 
of S. sugens (PI. III, fig. 2). Siphon tube large (Pl. II, fig. 19), 18 of 
body length. Siphonic index 1°9. Sixteen spines in each row shaped as in 
Stegomyza. 
Species 6,—Nymph trumpet rather broad, but narrower than above. More 
truncated than in species a. Antenna resembles that of Stegomyza (PI. II, 
fig. 8). Basal tuft small. Two rather large median spines present. No ter- 
minal spines. The antennz are covered with a few short spines. 
Siphon tube large, ‘2 of body length, Siphonic index 2°7. Eighteen spines 
in each row. 
Species c.—Trumpets of nymph nearly truncated, but opening slightly 
obliquely (PI. I, fig. 16). 
Larva long. Rests in nearly vertical position (Pl. III, fig. 26). Head 
very small and like that of Stegomyza. Antenne comparatively small. Basal 
tuft short, but composed of many hairs. Median and terminal spines small and 
inconspicuous. Antenna covered with large and prominent spines (Pl. II, 
fig. 9). 
Siphon tube enormous and very massive, ‘26 of body length. Siphonic 
index‘5'9. Nineteen spines in each row. Whole tube strongly chitinised and 
opaque (PI. Il, fig. 21). 
Spectes d.—Trumpets of nymph resembling those of species c. 
Larva long’ (Pl. I, fig. 22). Rests in nearly vertical position (PI. III, 
fig. 26). Head small and shaped much as in Stegomyza. Antenne long and 
well developed. Basal tuft short but composed of many hairs. Median spines 
fairly well developed. Third portion of antenna readily seen. Terminal portions 
short and inconspicuous. The whole antenna is densely covered with long 
spines (PI. II, fig. 10). Siphon tube enormous, not so massive as that of species ¢, 
but very similar in its horn-like appearance, ‘28 of body of length. Siphonic 
index 7°5 (Pl. II, fig. 22). 
These larval characters certainly suggest that the group concerned have 
little in common with the Culex fategans group. 
Group IV, Culex mtmeticus.—Theobald figures the siphon tube and 
Cc 
