Keuroptera Oclonata. 171 



Phyllopetalia (it is not waved in Petalia) . The mem- 

 branule is scarcely present^ as in Phyllopetalia. In the 

 abdominal characters it also approaches Phyllopetalia 

 rather than Petalia; thus the apex of the abdomen is 

 dilated from the seventh segment, but there are no sen- 

 sible lateral wing-like productions of the eighth, or these 

 are scarcely evident ; the appendices partake of the same 

 form, the inferior with the middle lobe extending slightly 

 beyond the apex of the superiors; these inferior appendices 

 are convex beneath, and deeply concave above, the 

 middle lobe being broad and rou^nded, the lateral lobe 

 small and sub-acute. In the markings of the wings it 

 also more resembles Phyllopetalia than Petalia in the 

 number of the marginal spots, and the presence of an 

 apical one, though these spots are more numerous 

 than in either. The females of all these insects are yet 

 unknown. 



Hypopetalia pestilens, n. sp. 



Head : face uniformly dirty greenish-yellow ; the labrum 

 margined in front with clearer yellow ; the lower lip and 

 palpi, and the posterior declivity of the front, also clear 

 yellow; summit of front, and back of the head behind 

 the eyes, with a thick crest of long black hairs. 



Prothorax clothed with long hoary hairs. Thorax proper 

 greenish-fuscous above, clothed with hoary hairs; the 

 metathorax black posteriorly above, and with a deep black 

 space in the centre of the dorsal crest, the surface finely 

 rugose, the rugosity caused by the presence of a number 

 of little tubercles, closely arranged in transverse rows; 

 sides yellowish, on the anterior portion on each side is a 

 large round whitish spot, broadly encircled with black, 

 and beneath this a short oblique whitish line, margined 

 with black ; inter-alar space densely clothed with hoary 

 hairs. 



Legs black; the lower side of all the femora reddish. 



Abdomen fuscous (colours probably changed) , the mid- 

 dle of the second segment above, the sides of this 

 segment, and the ventral margins of segments 3-6, 

 testaceous, the suture blackish beneath ; segments 7-10 

 yellowish beneath ; superior appendices short (not so long 

 as the tenth segment) , rather narrow at the base, after- 

 wards somewhat flattened, obtuse, black, yellowish at the 

 extreme base ; inferior appendage scarcely longer than 

 the superior, yellow, the two lateral apical lobes, black. 



