:>('. Needham — Nine Genus and Species of Dragonfly. 



This genus is intermediate in a number of characters between IIc- 

 liocharis and Dicterias of the same region, but seems allied to the for- 

 mer by more important characters. It differs, however, from Helioch- 

 aria in the separation of vein M : _ 2 from vein M 3 close beyond the quad- 

 rangle, and in its subsequent fusion with the radius, and in the con- 

 dition of its antenodal crossveins. 



It differs utterly from Dicterias in the arrangement of its interpolated 

 sectors, in the remoteness of the nodus from the base of the wing, in the 

 form and position of the posterior branch of the cubitul vein, and in 

 type of coloral ion. 



Cyanocharis valga sp. now 



Length. G2 mm; abdomen, 44 mm; hind wing, 35 mm. 



Colors greenish-blue and black. Head blackish, with the labrum, the 

 post-clypeus, and the occiput behind the eyes greenish. Antennae 

 black, the second joint twice as long as the first and but half as thick, 

 the remaining five joints together but little longer than the second, each 

 of them a little shorter than the one before it. Mouth strongly pro- 

 jecting, the squarely cut post-clj-peus being horizontal, the ante-cly- 

 peus vertical and the labrum sloping. Median ocellus large, lying in a 

 wide longitudinal furrow; lateral ocelli smaller, each confined to the 

 outer aspect of a conical vertical spine. A [-shaped sulcus behind the 

 ocelli sharply defines the occipital crest, which is thinly fringed with 

 tawny hairs. 



Prothorax blackish, fenestrate with green, three greenish patches on 

 either side, a twin spot of paler green upon the middle, and a broad 

 greenish crescent lying transversely upon the rather prominently elevat- 

 ed, black bordered posterior lobe. Thorax with blackish carinae. 

 Ground color greenish blue (turquoise blue), with narrow stripes of 

 brown on all the sutures. the:~middorsal one divided by the black of the 

 carina. There is also a well developed, isolated, antehumeral stripe of 

 brown. 



Legs excessively long and slender, appearing bare by reason of the 

 minuteness of their numerous spines. Hind and middle femora slightly, 

 and fore femora and tibiae strongly curved. Claws with a very minute 

 tooth so near the tip that it appears bifid, hardly distinguishable in the 

 front tarsus. Wings hyaline, slightly tinged with brown at the extreme 

 tip: stigma brown. Antenodal crossveins 18 in the fore wing and 15 in 

 the hind wing, with 4-5 half antenodals additional in the basal subcostal 

 space: 17 and 14 postnodals in the fore and hind wing respectively. 

 St igma long, covering 5-6 cells, and reaching nearly to the wing apex, 

 there being but three minute crossveins in the space beyond it. Bet- 

 ween veins Mi and M 2 are five interpolated sectors, only the middle one 

 being of more than a few cells length: between Rs and M 3 are four sec- 

 tors, the third longest: there are two sectors between M 2 andRs, two bet- 

 ween M 4 and Cu,, and two behind Cu 2 , the second of these appearing as 



