Genus Culex. 231 
Further Note on the Larva. 
Mr. Aitken sends a note on the larva of this species which 
contains some additional characters to those given me by Captain 
James (Vol. IT., p. 110). 
‘The head is brown, but the body is usually of a transparent 
white colour, except the posterior half of the thorax, the third, 
sixth and last segments of the abdomen and a central Jine, which 
are of a rich brown hue. It floats horizontally, but of course 
not at the surface, the breathing tube being moderately long. 
This creature feeds, as far as I have seen, exclusively on other 
larvae, catching them by any part and chewing them up, 
undisturbed by their wrigglings. I fed mine on Culex and 
Anopheles, but they devoured each other also till there were 
only two monsters of equal size left, which produced fine 9 
mosquitoes. 
‘“‘T found this species with other larvae in grassy pools, and 
once in a very deep well. I have also taken them from a well 
in Bombay. As might be inferred from its habits, this larva 
differs in many points from that of a typical Culex. The most 
obvious difference, and one that can be seen with the naked eye, 
is in the antennae. Those of C. fatigans are long and tufted at 
the ends, and, standing out like the jaws of a stag-beetle, give 
the insect a horrific aspect. In the larva of concolor they are 
short as in Anopheles. The jaws are formidable, and the brushes, 
which are large and consist of very stout bristles combed at the 
inner edge, do not overhang the mouth, but extend laterally.” 
Dr. Durham found the larvae in buffalo-wallows. 
This species must also be removed from Oulex. 
CULEX HALIFAXII. n. sp. 
Thorax brown, with slightly darker linear ornamentation 
when denuded, covered with brown scales with paler ornamenta- 
tion and a dark curved line at the sides of the posterior half of 
the mesonotum. Abdomen dark brown, unbanded ; venter with 
broad basal creamy white bands and patches. Legs brown, with 
an ochraceous tinge, unbanded ; femora with a few scattered pale 
scales, long and moderately thick. Posterior cross-vein in a line 
with the mid. 
@. Head brown, with narrow-curved creamy grey scales 
