56 THE DIPTERA OF THE BRISTOL DISTRICT. 
Limnobiid/E — Very long-, thin-legged gnats, with a somewhat 
elaborate wing-veining. Some of them when standing at rest have 
the curious habit of vibrating the body up and down rapidly. 
Some of the larvae are aquatic, some live in plants. This family 
includes a very large number of genera and species. 
Limnobia quadrinotata (Mg,) V.R.P. 
nubeculosa (Mg.) S.M. February. 
flavipes (F.) S.M. May and C.J.W. 
tripunctata (F.) V.R.P. 
macrostigma (Schum.) V.R.P. 
Dicranomyia cequosa (Verr.) S.M. April. 
„ lutea (Mg.) Bristol. August. 
,, chorea (Mg.) S.M. May, very common. V.R.P. 
Acyphona maculata (Mg.) V.R.P. 
Molophilus obscurus (Mg.) V.R.P. 
Rhypholophus lineatus (Mg.) S.M. April. 
,, nodulosus (Mg.) S.M. September, and also V.R.P. 
,, similis (Staeg.) Cheddar. July. 
Erioptera flavescens (Mg.) V.R.P. Stonehouse 
,, macropthalma (Lw.) S.M. May. 
,, tcenionota (Mg.) V.R.P. 
, , trivialis ( M g. ) S . M . May. 
Erioptera has conspicuously hairy wings. 
Lipsothrix errans (Wlk.) V.R.P. 
PcEcilostola punctata (Schr.) V.R.P. and C.J.W. 
Limnophila lineola (Mg. ) V.R.P. 
Trichocera annulata (Mg.) S.M. January. 
,, hiemalis (Deg.) Common everywhere in Winter. 
,, fuscata(Mg.) S.M. February. 
,, regelationis (L.) S.M. Very common ; have bred it from 
rotten turnips. 
These are the "Winter Gnats," occurring in the coldest weather. 
Dicranota bimaculata (Schum.) S.M. May. 
Amalopis littoralis (Mg.) Lynmouth. June. A large yellow species 
that probably occurs on the North Somerset coast. 
Pedicia rivosa (L.) V.R.P. Kilcot, Gloucestershire. Larvae aquatic. 
Tipulid^e — Crane-flies or 'daddy-long-legs.' Larvae live in the 
earth, and sometimes devastate crops. 
Dictenidia bijnaculata (L.) V.R.P. 
Pacchyrrhina histrio (F.) S.M. July. 
,, maculosa (Mg.) Redland. July and V.R.P. 
,, cornicina (L.) R.V.P. 
,, quadrifaria (Mg.) S.M. July. 
Rather small crane-flies, mostly yellow, with distinct black mark- 
ings. Larvae occur in decaying wood. 
