26 THE VICTORIAN NATURALIST. 



Medium-sized black and yellow insects, smaller than Synthemis. 

 No difference of colouration in sexes, and very little in the 

 markings. Frequent rivers, creeks, and marshes. Seldom seen 

 far from water. There are twelve species of Austrogomphus 

 recorded in Mr. Martin's list. I have only seen the three noted 

 above. 



Sub-family — ^schninse. 



Hemianax papuensis, Burm. 

 iEschna brevistyla, Rambur. 

 Planteschna tripunctata, Martin, nov. sp. 



,, sagitta, Martin, nov. sp. 



„ longissima, Martin, nov. sp. 



„ multipunctata, Martin, nov. sp. 



Austroseschna parvistigma, Selys. 



„ inermis, Martin, nov. sp. 



Telephlebia godefroyi, Selys. 



The ^schninse are all large, swift-flying insects, frequenting 

 rivers, creeks, lagoons — in fact, water of any kind — and, like 

 Hemicordulia, are often seen in the bush at a distance from any 

 water at all. On account of their rapid flight they are difficult to 

 capture, requiring a large net and a quick eye and hand. This is 

 probably one reason of so many of my species being new. They 

 are always on the move during the day, but towards evening begin 

 to settle on trees, bushes, &c., generally pretty high out of reach. 

 Some of the species enumerated I have never seen in the valleys 

 and lower grounds, but only on the mountain streams at some 

 altitude. P. longissima and T. godefroyi are examples. 



H. papuensis is brownish-yellow with black markings. The 

 ^schnse are all black or chestnut-brown, with yellow or greenish 

 spots and patches. T. godefroyi is a very striking insect, of a pale 

 brown colour and easily recognizable by the fact that the wings 

 have a dark brown stripe extending from the base along the costa 

 to the tip, with a brown patch surrounding the nodus. It has a 

 penchant for settling on rocks and stones, and is very rarely 

 met with. 



The sexes in the ^schninae do not differ in colour, but more or 

 less in markings. 



Family III. — Agrionid.^. 

 Sub-family — Calopteryginae. 

 Diphlebia lestoides. 



This is the sole recorded Australian representative of the sub- 

 family. It is a very variable insect, both in size and colour. The 

 adult males are blue or pale green with bronze-black markings. 

 The young males are the same colour as the females — brownish- 



