THE SUBFAMILY LIBELLULINj;. 319 



Khtothemis apicalis. (Plate LI. fig. 5.) 



Long. corp. 28 millim. ; exp. al. 60 inillim. ; long. ptev. 1\ millim. 



Female. — Head metallic green above, coarsely punctured, black behind and beneath, 

 the ocelli, the under surface of the front, and the rhinarium testaceous. Thorax with 

 brassy-green reflexions. Abdomen black, with brassy-green reflexions on the sides, 

 but much less distinct than on the thorax. Legs dull black. Wings clouded hyaline, 

 yellowish on the basal third and on the costa ; pterostigma black, the apex of all the 

 wings beyond smoky brown; fore wings with 11 antenodal and 10-11 postnodal ner- 

 vures ; sectors of the arculus not stalked ; triangle rather wide, crossed by one nervure, 

 and followed by four rows of cells ; subtriangular space consisting of 4-5 cells, a series 

 of small, almost connected, reddish-brown spots extends along the antenodal cross 

 nervures, filling up the first space from just beyond the sixth to the eighth, where it 

 expands into a large blotch, irregular on both sides, extending from the costa to the 

 upper sector of the arculus beyond the nodus ; there is a smaller irregular blotch occu- 

 pying the upper cell of the triangle, extending above it towards the base for a short 

 distance below the lower sector of the arculus; it also projects a little below the 

 transverse nervure of the triangle. On the hind wings the base, to two fifths of the 

 width of the wing, is covered with a large irregular blotch, which extends to beyond 

 the nodus, though relieved by a yellowish interrupted line on the costa to the fifth 

 antenodal cross nervure, yellowish spaces in the upper basal cell and beyond, and a 

 series of three or four paler spots at about two thirds of the length of the basal blotch. 

 From the inner margin runs another broad reddish-brown blotch to nearly one third of 

 the length of the wing ; the space between this and the upper blotch, and the narrower 

 space between the lower blotch and the hind margin, are decidedly yellowish. 



Hab. New Hebrides. 



Perhaps nearest to B. dispar, Brauer, but very distinct from any described species. 



Khtothemis triangularis. 



Long. corp. 27 millim. ; exp. al. 52 millim. ; long. pter. 1^ millim. 



Male. — Greenish black, vertex and back of thorax steel-blue, clypeus and labrum 

 reddish. Legs blackish, set with long slender bristles. Wings dark brown towards the 

 base, with violet reflexions, the centre of most of the cells towards the costa rather 

 lighter ; fore wings with one or two cross nervures in the triangle, followed by three 

 rows of cells (sometimes four in the first row), 8 antenodal and 8 or 9 postnodal ner- 

 vures, the last antenodal and the first three postnodals not continuous ; subtriangular 

 space consisting of 3-4 cells. On the fore wings the opaque portion extends to between 

 the fourth and fifth antenodal cross nervure, and its outline coincides very nearly with 

 the outer side of the triangle ; above the triangle there are two slight projections, and 

 below the triangle the opaque portion runs straight down very nearly to the inner 

 margin, but turns a little towards the base just before reaching it. On the hind wings 

 the opaque portion extends to the nodus, the centre of the last antenodal cells, however, 



