232 
A Monograph of Culicidae. 
8. Megarhinus Portoricensis. Von Roder. 
(Ent Zeit. Stetin, p. 337 (1885), Yon Roder ; Tran3. Ent. Soc. Load. p. 271 
(1896), Williston.) 
(Fig. 32, PI. VIII.) 
Thorax brown, with dull bronzy and golden-green scales, and 
one azure patch over the roots of the wings and at the sides. 
Abdomen steel-blue in the £ , greenish-blue and purple in the 9 > 
with lateral, creamy white patches and golden venter. ISTo 
traces of caudal tufts left (described as being steel-blue and 
white). Legs steel-blue, golden beneath the femora, penultimate 
tarsal joint white. 
£ . Head dark brown, with a shiny white border round the 
eyes and with white scales at the sides of the head, two more or 
less distinct small azure spots in front and a few golden-brown 
bristles projecting forwards; antennae brown, the basal joint 
nude, black with cinereous lustre and a cinereous ring around the 
base, the second joint long, equal to three of the following, with 
numerous metallic and yellow scales; palpi rather thick metallic 
purple and blue; the penultimate as long as the last joint, 
the antepenultimate slightly longer than the penultimate; pro¬ 
boscis long, steely-black ; eyes with a pale golden lustre. 
Thorax brown, with small, bronzy and dull golden-green 
scales, an azure patch of flat scales over the roots of the wings, 
and those of the sides of the thorax with an azure reflection; 
prothoracic lobes covered with azure-blue scales; scutellum dark 
brown with white and azure-blue and bronzy scales; metanotum 
small, chestnut-brown; pleurae dark brown, with a large silvery- 
white patch above the coxae. 
Abdomen covered with brilliant steel-blue scales above, 
creamy-white to golden patches along the sides, not showing 
above, venter bright, with pale golden scales; caudal tufts not 
present. Legs steel-blue to brilliant purple; femora golden 
beneath, hind legs long, the penultimate tarsal joint white, 
except a small dark basal spot ; anterior and mid ungues steel- 
blue, unequal, the larger ones uniserrated; hind ones equal and 
simple, small. 
Wings yellowish, with the costal, sub-costal, first long vein 
and the bases of the others with metallic violet scales ; first sub- 
marginal cell very small and narrow; supernumerary cross-vein 
vertical, about five times its length nearer the apex of the wing 
