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A Monograph of Culicidae. 
Abdomen pale yellowish-brown, with transverse brown stripes, 
which nearly cover the hind segments, apical segment all brown. 
Legs yellow ; tarsi brown ; ungues dark brown. 
Wings with golden-yellow veins clothed with scales. 
Length. — 5 mm. 
Habitat. —Europe. 
Observations. —This dark species can at once be told by the 
long first tarsal joint. There are specimens in the British 
Museum collection, and Mr. Bignell has also specimens. Beyond 
these I do not know of its existence in English collections. 
Haliday described in MS. a species under the name M. effoetus 
from four females in Mr. Clifton’s collection. I do not know 
what has become of the types. The description is given by 
Walker (Ins. Brit. Dipt.). I fancy, however, that Haliday’s 
species is M. velutinus. His original description is given below :— 
Mochlonyx effoetus. Walker. (Haliday MS.) 
“ Brownish-red, with yellowish down; almost of a golden gloss; 
front thickly clothed with yellow hairs; palpi fuscous; antennae fusco- 
ferruginous, paler at the base; sutures of the thorax delicately marked 
with fuscous; hinder edge of the abdominal segments and lateral lines 
darker; pleurae paler. Wings hyaline, a little yellowish towards the 
costa; veins pale, fusco-ferruginous; halteres pale, with fuscous at the 
tip; legs pale ferruginous, with fuscous hairs; hind femora slightly 
embrowned before their tips. 
“ Habitat. —England.” 
