336 ME. W. F. KIEBT — A EEVISION OF 



the ninth and tenth segments (as well as part of the eighth in the female) and anal 

 appendages black ; anal appendages of male as long as the ninth segment, those of the 

 second segment not prominent. Wings yellowish hyaline, darkening with age, the tips 

 tinged with rust-colour as far as the base of the pterostigma, which is dark reddish 

 brown between black nervures; fore wings with 17-18 antenodal and 12-13 postnodal 

 nervures; hind wings with 11-13 antenodals and 12-13 postnodals. 



Hab. Borneo. 



Allied to Agrinoptera simulans, Selys. 



Nesoxenia cingulata. (Plate LIII. fig. 8.) 



Long. corp. 33 millim. ; exp. al. 60 millim. ; long. pter. 3 millim. 



Head yellow, clypeus, except on the sides, and frontal tubercle greenish blue, the 

 greater part of the mandibles and the suture of the labium blackish ; back of the head 

 black, with a double yellow spot behind the occipital triangle, and two yellow spots on 

 each side behind the eyes. Thorax bronzy green above, with a large spot on each 

 shoulder, an oval spot on the median line, a spot on the base of the tegulse, three spots 

 below the base of the fore wings, and the usual interalary spaces yellow, the base of 

 the scutellum being marked with a black crescent ; sides of thorax yellow, with two 

 oblique bronzy-green stripes, trifid above and subbifid below, the spaces enclosed by 

 the first forming the spots already noticed at the base of the fore wings ; between these 

 is a detached stripe on the lower part of the mesopleura. Legs black, front femora 

 yellow beneath. Abdomen black, the first segment yellow beneath, the second yellow 

 to beyond the transverse carina, which is black ; the basal half of segments 2-6 more 

 or less yellow on the sides, and the dorsal carina is interruptedly marked with yellow; 

 segment 7 with a complete ring on the basal half. Wings hyaline, with black ner- 

 vures; pterostigma dark brown, nearly black, the lower antenodal subcostal space, and 

 the lower basal cell, a little clouded as far as the first cross nervures. 

 Hal. Alu. 



Agkionoptera insulakis. 



6 . Long. Corp. 37 millim. ; exp. al. 62 millim. ; long. pter. 3 millim. 



S . Long. Corp. 41 millim. ; exp. al. 70 millim. ; long. pter. 4 millim. 



Male. — Face yellow, upper angle of the clypeus strongly projecting, frontal tubercle 

 and upper surface of clypeus coppery green; labium black, the sides rather broadly 

 yellow ; mandible black, back of head black, with a double yellow spot behind the 

 occipital triangle, and a yellow spot behind the middle of each eye. Thorax bronzy 

 black above, a shoulder-spot, two small spots on each side before the base of the wings, 

 an incomplete double stripe on each side of the median line, a spot on the base of the 

 two hinder lobes, and the scutellum and interalary spaces, yellow; sides of thorax 

 yellow, beneath the wings coppery green, the ventral surface darker bronzy green, this 



