Genus Melanoconion. 243 
Abdomen entirely black above, with moderately long dull 
golden border-bristles, laterally at the base of the segments are 
small white patches of scales ; venter pallid, with an ochraceous 
tinge on the apical portion, grey at the base; the base of the 
segments palest. 
Legs black ; coxae brown; venter of femora, especially of 
the hind pair, pale ; the fore femora are swollen and the mid pair 
of legs prominently swollen, having a somewhat flattened appear- 
ance ; hind legs long ; ungues equal and simple. 
Wings with typical brown Melanoconion scales; first sub- 
marginal cell longer and narrower than the second posterior cell, 
its base a little the nearer the base of the wing, its stem rather 
less than half the length of the cell ; stem of the second posterior 
rather more than half the length of the cell ; posterior cross-vein 
nearly twice its own length distant from the mid ; halteres with 
pale stem and black knob. | 
Length.—4°5 mm. 
Habitat.—Trinidad (C. W. Hewlett). 
Observations.— Described from a single 9. It cannot be 
mistaken for any other member of the genus on account of the 
thoracic ornamentation and the curious thick flattened mid legs. 
The black velvety ground colour and the golden thorax and pale 
venter form a strong contrast. 
Genus 24. GRABHAMIA. nov. gen. 
(Plate XI.) 
Alhed to Culex and Taeniorhynchus. Palpi of ? 4-jointed, 
with the apical joint minute, penultimate joint long and thick, 
two basal joints moderate sized. Palpi of ¢ long; the last two 
joints may be slightly swollen and have distinct hair-tufts. 
Head with narrow-curved scales, upright forked ones, and flat 
lateral ones. Thorax with narrow-curved scales. Legs mostly 
mottled and spotted. Wings with rather thick median scales 
and often short broadish lateral ones on some of the veins, 
neither so long nor dense as in Taeniorhynchus. Wings short 
and stumpy. Fork-cell short. Scales mottled. 
Ten species previously included in Culex come in this 
genus :—dorsalis, Meigen; sollicitans, Walker; Jamaicensis, 
Theobald ; Durbanensis, n. sp. ; pygmaeus, n. sp. ; ambiguus, n. sp. ; 
, R 2 
