CLASS V. INSECTA. 299 



Fam. XIV. Muscid.^. Leach. 

 MusciDES. Lalreille. 

 Froboscis retractile, terminated by a very remarkable dilatation. 



Stirps 1. — Antenna inserted near the front, setigerous : palpi internal : 

 halteres visiMe : anterior legs simple : head not siibglobose : hinder legs 

 not iari^er iliaa the rest : wings horizontal ; ei/es sessile. 



Genus 539. MOCILLUS. Latr., Leach. 

 Antenna shorter than the head : head hemispheric. 

 Sp. 1. Mac. cellar ins. Linnc, Leach. 

 Inhabits wine-vaults. 



Stirps 2. — Antenna inserted near the front, setigerous : palpi internal : 

 halteres visible: anterior legs simple: head not subgloi)Ose: hinder 

 legs not longer than the rest : zcings divaricating : ej/cs simple : ver- 

 tex narrow. 



Genus 540. TEPHRITIS. Latr., Fabr., Illig., Leach. Trypeta. 

 Meig. Dacus. Fabr. 

 Thorax cylindric : proboscis entirely retractile. 



Sp. 1. Teph. Cardui. Latr., Leach. 

 Inhabits thistles. 



Stirps 3. — Antenna inserted near the upper part of the head, setige- 

 rous : ;W/;i internal : //a/^t7'es visible : «'i/mor /e^s simple: head not 

 often subglobose: hinder /f^i^s not larger than the rest; ?iv»(^.s detlexed : 

 ej/es sessile : vertex broad. 



Genus 541. CALOBATA. Mcig., Illig., Latr., Fabr., Leach. 

 Antenna very much shorter than the head, the third joint longer than 



the second : bodt/ long, filiform : legs long, tiliforui. 

 Sp. 1. Cal.filiformis. Latr., Leach. 

 Inhabits France and England. 



Genus 542. SEPEDON. Latr., Leach. Bacca. Fabr. Mulio. 

 SchcUenberg. 

 Antenna; very much longer than the head, inserted on an elevation; the 



second joint very long, cylindric. 

 Sp. 1. Sep. palustris. Latr. 

 Inhabits marshes. 



Genus 543. LOXOCERA. Meig., Illig., Latr., Fabr., Leach. 

 AntenHa very mnch louger than the head; last joint linear : abdomen 



narrow, linear. 

 Sp. 1. Lox. Ichneumonia. Meig. 

 Inhabits flowers in marshes. 



Genus 544. SCATOPHAGA. Meig., Latr., Leach. Pyropa. Illig. 

 Antenna shorter than the head: head round, siib-globose: vertex hori- 

 zontal : body very much elongated. 



