ARTHROPOD A. 125 



Ooenosia. TJrophora. Caenia. 



Tetanocera. Tephritis. Ephydra. 



Loxocera. Trypeta. Piophila. 



Chyliza. Sepsis. Borborus. 



Cordylura. Nemopoda. Drosophila. 



Scatophaga. Diopsis. Oscinis. 



Sapromyza. Elaphomyia. Chlorops. 



Sciomyza. Calobata. Meromyza. 



Dorycera. Micropeza, Agromyza. 



Ortalis. Calopa. Phytomyza. 



Dacus. Lauxania. 



Ceratites. Celyphus. Ph&ridas. 



Platystoma. Ochthera. Phora. 



NEMOCERA. Antennas with 6-16 joints. Palpi 4-5-jointed. 

 Larvae frequently aquatic and free-swimmers ; variously feeding 

 according to the family. 



The antennas are often plumose, especially in the males. Culi- 

 ciclse have a long proboscis of seven pieces. In Tipulidee and the 

 other families the proboscis is short and the number of pieces 

 vary. Cecidomyiidae are gall-makers. Psychodidae are small 

 moth-like flies, with hairy wings and body. 



Bibionidcs. Ptychoptera. Psychodida. 



Scatopse. Ctenophora. Psychoda. 



Simuliuin. Dixa. 



Aspistes. ChironomidcB. 



Bibio. Mycetophilida. Ceratopogon. 



Ehyphus. Corethra. 



Cliionea. Platyura. Chironomus. 



Molobrus=:Sciara. Tanypus. 



Tipulida. Mycetophila. 



Limnobia. Culieida?.. 



Geranomyia. Cecidomyiidce. Miastor. 



Tipula (Daddy- Cecidomyia (Hes- Anopheles, 



long-legs). sian-fly). Culex (Gnat). 



AIMIANIPTERA. Thorax not distinctly marked off from the ab- 

 domen ; the former with two scales on each side [abortive wings]. 

 Larva vermiform, with a distinct head and jaws. Pupa inactive. 

 Perfect insect an animal-sucker. An aberrant group. 



The sucking-apparatus is made up of two elongated mandibles, 



