66 FAUNA HAWAIIENSIS 



(6) Agrion asteliae, sp. nov. 



Extremely like the preceding in general appearance, sometimes larger, sometimes 

 of equal size. Post-cubital nervules usually 19 to 21 in the anterior wings, but in one $ 

 there are only 14. The $ characters are extremely like those of A. koelense, but are 

 quite sufficiently distinct by the greater development of the inferior apical process 

 of the superior appendages which is rather larger than the upper process, and both 

 of these processes are somewhat more strongly bent inwards, and also towards each 

 other. 



Female with the femora pale beneath, some pale markings on the sides of the 

 thorax and sometimes two lateral longitudinal stripes on the dorsum. Superior 

 appendages black, valvules pale, their appendages black. In one example the abdomen 

 is almost entirely black, in the other the bases of the segments have a very narrow 

 distinct pale band, hardly indicated in the former. 



Hab. Mountains of Oahu, 3000 ft. Nymphs taken freely in the leaves of 

 growing plants of Astelia veratroides. A single pair taken in copula at Kilauea 

 Hawaii (4000 ft.). The individuals from the two Islands do not altogether agree, but 

 I doubt whether they could be separated, even with a long series of examples. 



(7) Agrion amaurodytum, sp. nov. 



Dull black, or in the $ (and rarely in the ^) greenish black with metallic lustre. 

 t with the head, thorax and base of the abdomen usually more or less covered with 

 a slate-coloured pruinose efflorescence, rarely altogether absent in this sex, though 

 invariably wanting in the %. Labrum pale along the apical margin. Sides of face 

 along the inner margin of the eyes below the antennae pale, these markings connected, 

 or nearly so, by a pale line in the %. Vertex black, the region of the post-ocular spots 

 occupied usually by two patches of bluish pruinosity. In the $ the post-ocular spots 

 are sometimes absent, often very small, but sometimes well-developed, and yellow in 

 colour. Prothorax with a transverse pale line in front in the %, and sometimes some 

 spots posteriorly, usually unspotted in the ^, but occasionally with markings like those 

 of the $. Thorax with a yellow stripe on each side of the dorsum in front in the $, 

 which is rarely, more or less distinctly, present in the t ; the sides with pale markings 

 (variable) in the $, which are generally less bright in the ^, and sometimes entirely 

 absent. Legs black in the ^, the femora more or less pale beneath in the %. Wino-s 

 with 19 — 21 post-cubital nervules. Four or five cellules between the quadrilateral and 

 nodus. Pterostigma dark, not very elongate. Abdomen in the ? with a more or less 



