\ 



53 i 



BIPTEEA. 



DIPTERA. 



lying flat in cavities at the sides of the head . 1. Suctoridea. 



4. A ■ e i- c fclose side by side ... 2. Pkoboscidea. 

 seated in front or I •' 



- ^^ ■ ® Idistant 3. Eproboscidea. 



SUCTOEIDEA. 



Suctoria, Degeer ; Latr. 



Aphaniptera, Kirby ; Stephens ; Curtis ; Westwood. 



Siphonaptera, Latr. 



Aptera, Lamarck ; M'Leay. 



Aptera p., Linn. ; Dumeril. 



Ehophoteira p., ClairviHe. 



Diptera p., Oken ; Burmeister ; Erichson; Siebold. 



Kyngota p., Fabr. 



Antliata p., Schioedte. 



Antennse pone oculos, laterales, distantes, recumbentes. 

 Oculi bini, laterales, simplices. 

 Mandibulse extricatae, serratas. Lingua nidla. 

 Palpi labiales non semper obsoleti. 

 Alfe et halteres nulla. 

 Epiraera prothoracis libera, porrecta. 



Corpus compressum, ad juncturas thoracis cum capite et abdomine uou 

 coustrictum. 



PKOBOSCIDEA. 



Proboscidea, Latr. 

 Diptera, Leach; Meigen. 



Antenna} iu fronte inter oculos. 



Labium apice bilobo. Lingua labro inclusa. 



Palpi maxillis affixi, vel fulcro proboscidis. 



Alee et halteres in plerisque. 



Pedes cujusque pans inter se fere contigui. 



Head attached to the front of the thorax by a slender neck. Large 

 compound facetted eyes at the sides of the head ; on the vertex often 

 three simple eyes. Antennce inserted in front of the head, bettoeen the 

 large eyes. Proboscis attached to a fleshy prop inserted in a cavity in 



