MYCE'roPIllLIDylv 17 



S0TAUIN.1<;. 



1. Winiis and lialtcres wliolly waiitiiii,^. . . Epidapits 9 Haliday. 

 Wings and lialteres as usual. .2 



2. Tlie fourth vein springs fmin tlir tlurd at tlir !int;lf, i. c. tlie anterior 



cross-vein is obsolete. ...... Epidapus $ 



Anterior cross-vein not obsolete. .......'■) 



Z. Antennal joints of the male pedicillated and with whorls of hairs. 



ZvGONEtJRA Meigen. . 

 Antennal joints not pedicillated ; l>are or with short liairs. . . 4 



4. Wings very distinctly hairy. .... Tkicuosia Winiiertz. 



Wings bare or l)Ut slightly hairy Sciara Meigen. 



MYCKTOBIX.'E. 



1. Auxiliary vein coMi))lete ; the anterior branch of the third vein arises 



at the point where tlie third vein and the anterior cross-vein unite. 



Mycetdhia Meigen. 



Auxiliary vein rudimentary, not ternunating in the costa ; the fork of 



tlie third vein petiolate. ........ 2 



2. Fork of the tlurd vefii shorter than the fork of the fourth vein. 



Pi.KSiASTiNA Winnertz. 

 Fork of the third vein longer than that of the fourth. 



Drro.MviA Winnertz. 



CEROPLATIN^. 



1. Face and proboscis prolonged, snout-like. . Asindulum Latreille. 

 F'ace and proboscis not produced. ....... 2 



2. Antennfc shorter than the head and thorax, flatti'ued ; palpi short. 



Cekoplatus Bosc. 

 Anteiuiit' usually more elongate, cylindrical ; jialpi moderately long. 



I'latyuha Meigen. 



SCIOPHILIN^.. 



1. Anterior cross- vein more than twice the length of the first section of the 



third vein, fornung ai)i)arently the beginning of the third vein. 



TETRAdONEUHA WilUlCrtZ. 



Anterior cross-vein ])ut little longer or shorter than the first section of 

 the third vein, and forming a distinct angle with the second section. 2 



2. The costal vein terminates at the tip of the third vein. Scioi'Uir.A Meigen 

 The costal vein continues a short distance beyond the end of the third 



vein. ...........■•' 



o. F'ork of the fourth vein very short jxtiolate, the ])refurca shorter than 

 the anterior cross-vein. ........ 4 



l'refur<'a of the fourth vein much loniicr than the anterior cross-vein. 5 



