a. 
THE CHIRONOMID. 195 
(aa). Thorax not striped. 
xvii. 9 black, shiny, stout. Legs } 
stout, tawny; fore tibize and tips of 
tarsi, femora and remaining tibiz 
brown. First, second, third veins 
and transverse veinlets brown. 
Length, 3 lin. i 
Pygmeaus, V. d. Wulp, is also found in England. 
> LVervosus, Mg. 
GENnus.—C/unio, Hal.* 
This is a small genus, containing, as far as we know, only two 
European species : 
The proboscis and palpi are obsolete ; the thorax large and the 
abdomen small, with large hypopygium, about the same size or even 
Jarger than the abdomen, Antennz are 11-jointed, the third and 
eleventh joints being elongated, the intervening joints being small. 
The head is round and the thorax passes over it like a hood. Four 
veins only present in the wings, the second and third being forked ; 
there are no transverse veinlets. (PI. iv., fig. 7.) 
C. Marinus, Hal. 
As I have not seen this myself, I append Haliday’s description of 
it, the male only apparently being known : 
“ Dusky ferruginous. Head rounded, inflected to the preesternum. 
Mouth obsolete. ‘Eyes rounded; distant above, approximate be- 
neath, the antennz. Antenne, legs, wings, and halteres dingy 
white. Antennz 11-jointed, shorter than the thorax; the short 
joints rather dusky ; the’ basal joints sub-globose ; the terminal ovate, 
the third and last elongate, elliptical. Thorax projecting over the 
head ; scutellum and sides of the thorax before the wings pale 
yellowish; mesonotum divided by two parallel sutures, with an 
elevated line down the middle, and a depression before the convex, 
semicircular scutellum ; metathorax very short ; mesosternum gib- 
bous. Wings adiaphanous, naked, except the pubescent margin ; 
prebrachial vein (second longitudinal vein) bifurcated about its 
middle, embracing the apex with its branches; pobrachial (third) 
forked near the margin with the hinder- branch (sub-anal) recurved, 
ending at the posterior margin ; radial-cubital (first longitudinal vein) 
fainter between the prebrachial and the costa, ending at about the 
middle of the latter; anal vein (fourth) simple. Abdomen dusky, 
* Nat. Hist. Review, ii. Proc., 62, pl. 2, fig. 4, 1855, Haliday. 
