THE MYCETOFHILIDyE. 123 



Genus. — Mycothcra. 



Moderately small, dark brown and yellowish-brown genus ; wings 

 with brown markings. Head round. Fourth joint of palpi long. 

 Antennce i6-jointed. Eyes roundish; ocelli small, the middle one 

 standing in a little cavity. Abdomen 6 or 7-jointed ; hypopygium 

 small. The wings large, and the petiole of the second hind areolet 

 is short, not long as in Exechia. 



M. semifusca, Mg. 



This is a dark brown species, and, according to Walker, it has a 

 gray tomentum. The head is brown. The thorax is also dark brown, 

 with a testaceous spot on each side, has bright yellowish hairs on it. 

 Abdomen dark brown ; the $ genitalia small ; the ovipositor tawny ; 

 lamellae brown. Palpi testaceous. Antennae brown, about length of 

 the thorax, testaceous at the base. Wings marked with pale brown 

 across the middle and at the tips. Legs testaceous, tibiae and tarsi 

 brown ; posterior femora also brown at their distal extremity ; spines 

 on posterior tibiae very small. The anterior tibite longer than anterior 

 metatarsi. Length i| to li lin. This does not appear to be a 

 common species, nor does the other one that is found in England, 

 viz., M. diiiiidiata, Siaeg. = oce//?is, Wlk. 



Genus. — Brachycampta^ ^\'tz . 



The costal vein ending a little before the tip of the wing ; base of 

 fourth hind areolet much nearer base of wing than is base of second 

 hind areolet. Metamorphosis unknown. 



B. Incoloi; Macq. 



This gnat varies from rusty yellow to brown, with a grayish tinge. 

 Head brown ; thorax brown and testaceous pectus ; abdomen testa- 

 ceous, with brown markings. Anal segment small ; palpi testaceous ; 

 antennae brown or black, testaceous at base, stout, shorter than 

 thorax. Wings yellowish, with a brownish tinge. Legs yellowish ; 

 tarsi brown ; the posterior tibice have only a few spines, and very 

 long spurs ; anterior tibis nearly same length as the anterior meta- 

 tarsi. This is an uncommon species, and the only one of the 

 genus found in England. Length i^ to 2 lin. 



Genus. — Docosia, Wtz. 



The base of the fourth hind areolet is in a line with that of the 

 second hind areolet. Head oval, proboscis short ; palpi bent, 4-jointed 

 — first joint small, the fourth flat and very long. Antennae i6-jointed ; 



