58 M:\CETOPHILIDJ:. 



tennce slender, Jif teen-jointed. Thorax nearly elliptical. Wings pubes- 

 cent, moderately broad ; radial vein ending at one-third of the length 

 of the wing, connected near its tip with the cubital by an oblique 

 transverse veinlet ; cubital simple, ending at a little beyond three-fourths 

 of the length ; subapical forked at some distance beyond the tip of the 

 radial ; subanal simple ; anal distinct, curved towards the hind border. 

 Abdomen oblanceolate. Halteres rather long. Legs slender, rather 

 long, without spines or spurs. Male. Antennae moniliform, verticillate- 

 pilose, moderately long, sixteen-jointed. Fern. Antennas submouiliforni, 

 pilose, rather short, eleven-jointed. Abdomen longer than that of the 

 male. 



This genus connects the Mycetophilula with the following 

 family, with which latter it agrees in the structure of its antenna; 

 and of its legs, but resembles Sclara in the veins of the wings. 



1. leucophaea, Meig. Zw. i. 288. 81 (1818); Mcq. ; Zett. >?w- 

 perinus? F. Capite antennisque nigris, alts limpidis, venis pallidis, 

 halteribus pedibusque testaceis ; Mas, fnsca ; foem. testacea, thoracis 

 disco cinereo-fusco. Long. 1-li ; alar. 2-3 lin. 



Head and antennae black. Wings limpid ; veins pale. Halteres and 

 legs testaceous. Male. Body brown. Fern. Body testaceous; disc of 

 the thorax greyish-brown. 



Not rare. (E. S. I.) Mr. Haliday has observed that it appears 

 earlier in the year than the following species, and occurs chiefly 

 in groves of larches. 



2. cinerea, Mcq. H. N. D. i. (1830); Zett. Nigro-cinerea, an- 

 tennis nigris, alls cinereis, femoribus tibiisque obscure testaceis, tarsis 

 iiigris. Long, li ; alar. 3^ lin. 



Blackish-grey. Antennae black. Wings grey. Femora and tibiae 

 dingy testaceous ; tarsi black. 



" Not very rare. Near Cork in September and October. On 

 grass both in open places and on the borders of groves." Hal. 

 MSS. 



Genus XVI. CECIDOGONA. 



Lestretfiia (Subgen. Cecidogona), Loew, Ent. Zeit. Stett. v. 321 

 (1844). 



Corpus gracile. Oculi emarginati. Ocelli nulli. Palpi breves. An- 

 tenna graciles, \\-articulatte. Thorax subellipticus. Al<p. pubes- 

 centes ; vena radinlis brevis ; cubitalis et subanalis simplices ; subapi- 

 calis furcata. Abdomen oblanccolatum. Pedes graciles, longiusculi, 

 calcaribiisque 'iiidlis ; metatarsi clongnti. 'Ma*. Antenna 1 

 \crtieillato-pilosa\ Ftcm. Antenna rabmonilifbnnes, 

 pilosae, breves. 



