Doubtful Aedes. 597 
light yellow scales throughout their whole length. Full grown larva 
with six or seven separate comb scales, each scale with a simple 
stout curved spine arising from a pear-shaped base. The larvae of 
this form, collected from hollow trees, have been sent to me from 
several localities near Kingston (Waverley Estate, Constance Spring, 
woods above Rockfort). In all the specimens examined the comb 
scales had simple spines unlike the San Domingo form, which has 
frigid spines (Dyar and Knab, Journ. N.Y. Ent. Soc. XV., Pl. 5, 
fig. ii). I am indebted to Dr. G. H. Dyar for comparing the larvae 
and adults of these two species. Bred specimens vary greatly in size, 
the largest attaining about 6 mm. in length. The females bite blood 
without hesitation.” 
Aedes affirmatus. Dyar and Knab (1906). 
Proc. Biol. Soc. Wash. XIX., 164 (1906). 
“ Shining blue, like Haemagogus splendens, Willis, but the female 
with the fore and middle tarsal claws toothed. Head and thorax 
clothed with metallic blue scales, pleurae silvery white, abdomen 
dark blue above, with first segment with a white bar on each side, 
below with silvery white segmental bands. Legs blue-black, middle 
and hind femora with a silvery white spot at tip, the middle femora 
narrowly white lined below, the posterior ones very broadly so for the 
basal three-fourths. Base of first sub-median cell nearer apex of wing 
than base of second posterior cell. 
Four specimens: St. Lucrecia, Vera Cruz, and Salina Cruz, 
Oaxaca, Mexico ; Las Loras, near Puntarenas, and Rio Aranjuez 
Puntarenas, Costa Rica (Knab). 
Larva unknown.” 
Aedes pertinax. Grabham (1906). 
Canad. Ent. XXXVIII., 316 (1906). 
“ 9 • Head with a triangular yellow area in the centre, made up of 
yellow hairs and narrow curved scales, some rather broad, flattened 
ones at the sides, sides and back of the head black with many upright 
forked scales and hairs; antennae dark brown with silvery hairs 
on the joints ; palpi and proboscis black, speckled with silvery hairs, 
Clypeus dark brown. Prothoracic lobes black, with many long black 
hairs. Mesonotum black, sparingly covered with very small narrow 
curved dark brown scales, a narrow line of brilliant golden scales in 
the mid line extending to the posterior quarter (in some specimens 
this line is ill-defined, in others broad and conspicuous), a few long 
hairs near the posterior border and in front of the wing insertions. 
Scutellum dark brown with many long black hairs. Pleura greyish, 
with patches of silvery scales and hairs. Abdomen, upper surface 
black, with moderate basal bands of yellow scales and with large 
