1867.] 297 [Uhler. 



the ante and post-cubital cross-nervnles. The nnmbcr frequently 

 varies in the opposite wing, and in diHerent specimens the ante-cubi- 

 tals range from 9 to 13 in each anterior wing. 



Libellula umbrata Linn. This species is very abundant in 

 swampy places, settling upon the bushes, and is easy to capture before 

 the sun is high. I observed no females with the band across the 

 wings as in the males, but they varied very much in size. When old 

 and weather-beaten the abdomen becomes dirty olive colored and the 

 wings assume a dirty yellow, somewhat as in our Diplax ruhicumlula 

 Say. I observed it near the mouth and in the vicinity of the banks 

 of the Grand- Anse River, in many places beyond Jeremie; in April 

 and May. 



Libellula angustipennis Rambur. I obtained a few specimens 

 on the edge of a reed)- swamp. It was by no means common. The 

 teneral male has a red abdomen; in the fully adult this 'pavt is blue. 

 The species flies low, and not rapidly, jirefcrring the open spaces be- 

 tween the reeds and often settling upon projecting leaves. I saw it 

 first in May. 



Orthemis discolor Hngen. This was by far the commonest 

 species observed by me in Hayti. It affected the vicinity of streams 

 and puddles, as well upon the tops and sides of the less elevated 

 mountains as in the valleys. Some specimens were obtained at an 

 elevation of more than one thousand feet above the level of the sea. Its 

 mode of flight is quick, but not dashing, recalling that of our Libellula 

 pulchclla, usually extending over a space of two or three rods, and now 

 and then alighting ujjon a projecting branch or stick. During life, the 

 whole body appears bright red while flying in the bright sunshine, but 

 it turns to a dull reddish-blue, or brown, after death. The fully adult 

 males are powdered with blue. The females are of a lighter and 

 brighter red, and they are very much less numerous than the males, 

 at least during April and May. 



Lepthemis vesiculosa Hagen. During life this species is of a 

 bright ai)ple-green color, the spots iqion the abdomen appearing deep 

 black. It is rather a tame species, settling upon bushes in the vicinity of 

 the sea. Its flight, though rapid, is not continued far, and it seems to 

 delight in dashing up and down after the mosquitoes which abound 

 in the air during the evening twilight. It appeared about the middle 

 of April and was to be seen when I was ready to leave, in May. 



Dythemis rufinervis Hagen. Two individuals were observed 

 and captured near a brook running from the side of the mountain, at 

 a considerable elevation above the sea. They aj^jjeared in May. 



