62 The Ottawa Naturalist. [June 



49. Libellula ixcesta, Hagen. 



1 male, 1 female, fragm,entary (Maclaughlin). 



This Libellula is exceptional among Canadian species in 

 having no wing markings except the black pterostigma and an 

 indistinct brownish spot at the extreme apex. The abdomen 

 is more elongate than in the other species. Both sexes become 

 almost entirely bluish pruinose with age. 



We have taken this Dragonfly at Point Pelee and at Go 

 Home, Georgian Bay, but it seems to be somewdiat rare. 



50. Libellula exusta, Say. 



Ottawa, July 21st, 1907, 1 femal^ (Young); Meach Lake, 

 July 21st, 1907, 1 male, 1 female (Gibson). 



This is our smallest Libellula and can be distinguished at a 

 glance from our other species by the markings of the wings, in 

 w^hich it resembles a Leucorhinia. There is a pair of dark 

 brown streaks at the base of the fore wings, and an anterior 

 streak and posterior triangular spot at the base of the hind wings. 

 The general color is reddish brown, but in old males the dorsum 

 of the thorax and basal third of the abdomen is bluish-wiiite 

 pruinose. 



This is an excee<iing]y abundant insect about the lakes in 

 the Georgian Bay region and probably throughout a large part 

 of the province, but I have not found it about the small ponds' 

 and pools frequented bv other Libellulce. 



51. Libellula luctuosa, Bunn. 



Ottawa, July 19th, 1907. 1 male (Young). 



A striking species in which the basal third or half of the 

 wings is dark brown, the brown area sometimes margined with 

 white in the males. The apices of the wings are also sometimes 

 brownish. 



This species is not uncommon in southern Ontario, but the 

 Ottawa specimen is the only one seen by the writer from the 

 country north of Lake Simcoe. 



It is more generally known as L. basalis, Say. 



52. Libellula pulchella, Drury. 



Ottawa, July 14th, 1899, 1 female (Gibson); 1 female 

 (Harrington). 



Our largest and handsomest Libellula, and one of the m.ost 

 familiar of dragonflies. 



On each wing there are three dark brown patches, one at 

 the apex, another at the nodvis and a longer basal one reaching 

 out to the triangle or a little beyond it. In old males there is 

 a white spot on each side of the nodal spot, giving the insect a 

 striking appearance in the sunlight. 



