Genus Wyeomyia . 
273 
Wings (Figs. 285, a, and 287), with the veins clothed with 
brown scales very similar to W. Grayii, the first sub-marginal 
cell longer and a little narrower than the second posterior cell, 
its base only a little nearer the base of the wing than the base 
of the second posterior, twice the length of its stem, which is 
Fig. 286. 
Wyeomyia pertinans (after 
Williston). 
Fig. 287. 
Apex of wing of 
Wyeomyia perti¬ 
nans. ( ? ). 
(X. 9.) 
a little shorter than the stem of the second posterior cell; 
stalk of the second longitudinal'passes the end of the marginal 
cross-vein; posterior cross-vein nearly in a line with the mid cross¬ 
vein, but a little longer. Long lateral scales on one side only of 
the stem of the fourth long vein. 
Halteres ochraceous, with fuscous knob. 
Length .—3 mm. 
£ . Apparently like the £ , but the “ antennae a little more 
hoary ” (Williston), and the ungues will probably differ, and also 
the wing venation to some slight extent (F. V. T.). 
Habitat —St. Yincent (H. Powell, 10. 6. 1899), and Coast of 
St. Yincent (Williston). 
Time of capture .—May (12. 5. 1899). 
Observations .—There are several species from the West 
Indies that will answer to Williston’s description of Aedes 
pertinans, but those sent by Mr. Powell from St. Yincent most 
nearly agree, and although the original description is too short 
to be of any value when dealing with a number of closely related 
species spread over the world, I think the specimens sent by 
him from the Convent Estate must be Williston’s Aedes pertinans 
found on the coast and on the hills at 1000 feet. If this is so, 
and I cannot see otherwise, Aedes pertinans comes in my new 
genus Wyeomyia on account of the metathoracic bristles and the 
venation. 
It at first sight would be taken for W. Grayii, mihi, from St. 
Lucia, but the posterior and mid cross-veins are nearly in one line, 
VOL. II. T 
