BACOT : MOSQUITOES AND THE DANGER CF MALARIA. 263
li. Labium.
lxe. Labium and Epipharynx.
mn. Mandible.
mp. Maxillary palps.
mus. Muscles.
mx. First maxilla.
sal. Salivary duct.
tr. Trachea.
x. Space between clypeus and base of proboscis.
PLATE VI.—Anopheles maculipennis.
Fig. 1.—Egg seen from the side. a. the float.
Fig. 2.—Egg seen from upper surface, a. ridge of air-chambers which.
acts as a float.
Fig. 3.—Very young larval stage, b. brush, c. antennae, d. palp of 1st
maxilla, e. thorax, f. stigma.
Fig. 4.—Fully grown larva, b. brush, c. antenna, d. palp of maxilla,
e. thorax, f. stigma, g. palmate hairs, h. tergum, i. anal papillae.
Fig. 5.—A palmate hair.
Fig. 6.—Flabellum or flap which overhangs the base of certain thoracic
hairs.
Fig. 7.—Side view of head of a fully grown larva, b. brush, c. antenna,
d. palp of maxilla, m. hooked hairs at edge of maxilla, p. median
tuft of hairs, s. large leathered hairs which overhang head, t.
mandible, u. larval eye, v. eye of adult forming above and behind
u.
Abnormality in the Bill of a House-Sparrow.—A
cock house-sparrow, showing a remarkable abnormality in
the structure of the bill, was found in March by Mr. E. Syms,
in a water-butt at Manor Park. The upper part of the beak is
normal in size and shape, but the lower mandible is nearly two
inches long and curved, resembling in miniature that of a curlew !
The bird was in good condition and the contents of the gizzard,
consisting of grass, grain, and about thirty small stones, show
that the difficulty of feeding had been overcome by the sparrow,
though its manner of taking food is not obvious. It seems
probable that its unwieldy appendage brought about its untimely
end, for the cause of death was found to be due to concussion.
In connection with the abnormality just described it is interest-
ing to note that in its plumage the bird displays a strong
melanistic tendency.—A. Hibbert-Ware. F.L.S. Wanstead