Ill 

 Order DIPTERA. 



This order of insects comprises the "flies" which are easily recognizible in possessing 

 only one pair of wings, the place of the second pair being taken by a pair of knotted threads 

 known as "halteres." The mouth parts are formed sucking. The metamorphosis is complete, 

 the larvae being commonly known as maggots and usually cylindrical and footless. 



The order is a very large one, and the species differ very greatly in habits and economic 

 importance. Such species as the house fly and mosquitoes are not only an intolerable nuisance 

 to man, but have of late years come in for a great deal of study in connection with carrying 

 diseases. Others, such as the apple maggot, destroy fruits, and the gall-gnats the crops. 

 Both flies and house flies worry and torment the cattle. Others again are beneficial by being 

 parasitic on noxious insects, and very many act as scavangers by feeding on decaying vege- 

 table and animal matter. 



Family TIPULIDAE. 



The "Crane flies" have narrow wings, long slender bodies and very slender legs. They 

 resemble mosquitoes but are much larger and are most commonly found in low, marshy land 

 and at the edges of woods. Their flight is usually for a short distance at a time and is slow 

 and awkward, as is also their mode of walking. 



The larvae of most species live in the ground feeding on roots just below the surface. 



RHIPIDIA Meig. 

 R. maculata Meig. Chambly Co., IX. (Be). Rigaud VI (Be); Aylmer VI (Beaulne). 



DICRANOMYIA Steph. 



D. distans O. S. Rigaud VI (Be). 



D. immodesta O. S. Montreal IX (Be); Rigaud VI (Be). 



D. longipennis Schum. Province of Quebec (Osten-Sacken). 



D. liberta O. S. Montreal VI (C); Rigaud VI (Be); Hull VI (Beaulne). 



D. pudica O. S. Montreal VII (Be); Rigaud VI (C). 



LIMNOBIA Meig. 

 L. cinctipes Say. Montreal V (Be). 



L. indigena O. S. Sherbrooke Co. V-VI (Be); Vaudreuil Co. (Be). 

 L. solitaria O. S. St. Hilaire VII (C); Gatineau VII (Be); Hull VII (Beaulne). 



ELEPHANTOMYIA Osten-Sacken. 



E. Westwoodi O. S. Prov. of Quebec (Osten-Sacken). 



RHAMPHIDIA Meig. 

 R. fiavipes Macq.' Coaticook VI (Beaulne); Montreal VI-VIII (C); Hull VII (Beaulne). 



