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belonof all our dragon-flies, and it is divided into three trib?s : Agvionina, 

 ^^ilschnina and Libelliilina. Many of the genera are not I'epresented in 

 my collection, and indeed some ot them are nnre))resented in Canada so 

 far as I can learn. I will not here mention all the sub-divisions of 

 these groups — it would only be confusing — but I will notice our species 

 as they occur in my collection. 



The tribe Agrionina embraces all the siialler forms and some of the 

 most beautiful species of the Odonata, which sub-order embraces, and 

 is co-extensive with, the family Libellulidpe. The following description of 

 this tribe is taken from Dr. Hagen's synopsis of the Neuroptera of 

 North America : — " Antennae four jointed ; eyes distant ; wings equal ; 

 '•' abdomen cylindrical, slender ; accessory genital organs with the 

 " anterior hook connate ; penis and vesicle separated ; genital organs of 

 " the female vaginate." 



The first sub-family is Calopterygina?, the pecaliarities of which are 

 that the wings are densely reticulated, broad at, or toward, the ap. x 

 or tip and very naiTow at the base, with many anteoubital veins ami 

 the plerostigraa wanting in the males. 



Calopteryx Maculata, Beauvois, is a very pretty insect; the upper 

 part of the head, with the thorax and abdomen, are of a bright green or 

 blue colour, while the under portion of the same and the legs are black. 

 The wings, in the case of the male, are entirely dark brown, closely 

 approaching a black, except a .small portion of the base of the hind 

 ones which is semi-transparent. The length of the body is about 1^ 

 inches; expansion of the wings 2^^ inches. 



Calopteryx aequabilis, Say. — This insect answers to the same 

 description as the preceeding one, except that, instead of being black, 

 the wings are hyaline or transparent, with a broad dark band on the 

 apex of each, which gives it a beautiful appearance when flving in the 

 sunlight. 



Calopteryx vlrglnica, Drury. — Although not so attractive as either 

 of those mentioned this is still a very interesting species. The wings are 

 na)Tower and of greater expansion, smoked or yellowish in colour with 

 a semi-hyaline cloud on the tips and the pterostigma is milk white. 



From their erratic course, the color anil comparatively slow 

 motion of their wings, and their habit of alighting on plants, branches 



