Nenroptera from Western China. -li'iJ 



Wings hyaline, iridescent. In tlie anterior pair tlic sub- 

 costal area is faintly tinged with yellowish ; the oidy markings 

 are a blackish nodal dot on the subcosta, a smaller one below 

 it on the sector, and a third at the point of furcation of the 

 cubitus. Neuration black, passing into yellowish white at 

 the extreme base and in the anal region ; in the pterostigmatic 

 region are two rows of irregular cellules. Posterior wings 

 without markings, the basal portion of the subcosta conspicu- 

 ously deep black. 



Length of body, $ 14-17 niillini., of sctte 18 niillini. 

 Expanse 39-46 millim. ; length of anterior wing I'd-!'! 

 niillim. 



Two female subimagos, one female imago. 



A|)parently nearly allied to E. Japonica, M'Lach. ; the 

 male is a desideratum. 



O D N A T A. 

 Subfam. LiBELLULINA. 



Pantala JlavescenSj F. 

 Many examples. 



Sympetrum scoiicum, Donov. 



One female. 



The wings at the base deep yellow as far as the basal area 

 and on the anal border, which colour is continued in a less 

 intense degree along the costal margin to beyond the nodus. 

 The neuration is somewhat aberrant, inasmuch as the last 

 antenodal nervule is continued into the subcostal area in all 

 the wings except the left posterior. I find this condition not 

 uncommon in the species, and it is usually asymmetrical. 



Thecadiplax ardens, sp. n. 



Closely allied to Th. erotica^ Selys, but larger. Differs 

 principally as follows : — The two shining black spots on the 

 top of the front are usually (not always) united into a short 

 transverse band. On the thorax above is a cuneiform (or 

 triangular) black band in which is placed the dorsal carina ; 

 the humeral black band is broader, and the lower branch of 

 the divided portion of this band above the legs is curved and 

 connected with a complete oblique black line, in which is 

 placed the mesothoracic spiracle ; another oblique black line 

 occupies the metathoracic suture (these two lines usually con- 



