124 
A Monograph of Culiciclae. 
segments have lateral tufts of grey scales on the posterior 
borders, projecting from the sides; hairs long, deep bright 
brown; viewed with a pocket-lens the abdomen- is almost black 
in ground colour ; in other specimens dull yellowish reflections 
may be seen. 
Legs yellowish, covered with dark brown scales ; first two tarsi 
of the fore legs apically white, last two joints dark brown, fore 
metatarsi also with small pale apical bands; mid metatarsi and 
first two tarsal joints with minute apical yellow bands, last two 
indistinctly banded ; in the hind legs the last three joints are 
pure snow-white, and also the apex of the first; ungues very 
dark. 
ATings with the costa dark, with four distinct and several 
smaller white patches ; there are also numerous patches of dark 
scales, which vary to some extent, over the wing areas ; in the 
9 , from which this description is taken, the fourth long vein is 
covered with pale dusky scales, whilst in a $ from St. Lucia it 
is creamy-white; halteres with pale stem and fuscous knob. 
Length. —4 to 5 mm. 
f . Palpi dark brown, with scattered white scales, especially 
on the last swollen joints ; hair-tuft pale; there is a pale ring 
at the apex of'the apical and base of the penultimate joint; 
antennae brown, with brown plumes; proboscis brown and 
narrow. The white scales on the head extend nearly over the 
neck ; scales on the thorax white ; the larger ungues of the fore 
feet biserrated. 
Length. —4 to 5 mm. 
Habitat. —St. Lucia (St. George Gray, November 25) ; Pi' 
de Janeiro (Dr. Lutz) (4. 7. 1899) ; Jamaica (Dr. Grabham) 
British Guiana (Rowland) ; Antigua (Forrest); Grenada (Broad¬ 
way) (14. 2. 1900). 
Time of capture. —Jamaica, November to March; July, in 
British Guiana. 
Observations. —This is undoubtedly Arribalzaga’s A. albitarsis. 
Arribalzaga’s figure does not give the last tarsal joints of the 
fore and hind legs as white. There is no doubt that Robineau 
Desvoidy’s A. argyrotarsis from Brazil and Arribalzaga’s 
A. albitarsis are synonymous, in spite of the description of the 
former being inadequate, hence Arribalzaga’s name must sink. 
Dr. Lutz agrees with my identity of this species. It is subject 
to variation; for instance, in. the Brazilian specimens, the 
fourth long vein is dark scaled, whilst in the St. Lucia specimens 
