1917] F- F. IvAiDLAw : Indian Dragonflies. 337 



I cf North Lakhimpur, foot of hills, Upper Assam {H. Stevens) 

 (type of stevensi). 



I a' with larval skin, from Museum tank, Calcutta, emerged 

 April 4th, 19 15, No. 3015/21. 



Selys (Revision) expresses the opinion that there is but a single 

 species ranging from Japan to Sumatra and Assam which includes 

 perhaps varieties and not local races. He observes that the females 

 cannot be distinguished. The ' races ' named are : — 



C. subannulata (Selys). — Tenasserim, Calcutta. 



,, ciliata (Selys). — Malacca. 



,, serapica (Selys). — Nicobars. 

 ,, stevensi (Laidlaw) — Assam. 



It is evident that the species is one of which long series are 

 necessary for determining the value of the differences which exist 

 between individuals. 



The larval skin is incomplete and lacks the mask. I hope 

 later to publish an account of the larval forms of Indian dragon- 

 flies, so will not attempt an account here beyond that the legs are 

 long and slender, and the caudal lamellae are linear-lanceolate, 

 occupying about two-fifths of the total length of the larva. 



Copera marginipes (Ramb.). 



(PI. xiv, fig. 2). 



Copera marginipes, Kirby, Cat. Odoinita, p. 129 (1890). 



,, ,, Martin, Mission Pavie [Nevropteres] (sep.), p. 18. 



Psilocnemis marginipes, Kruger, Siettin Ent. Zeit. 1898, p, io2. 



1 <f Parambikulam, 700-3200 ft.. Cochin State, September, 

 1914 {F. H. Gravely). No. 8265/H.I. 



2 cf cf2 2 9 Nagpur, C.P., 1000 ft., August, igiS{E.D'Abreu). 

 1 cf Mormugao, Portuguese India, August 1916. No. 4369/H.I. 

 This species is characterized by the moderate dilatation of the 



two hinder pairs of tibias in the male, and by the very short 

 superior anal appendages of the same sex These are about one- 

 quarter as long as the stout lower pair This well-known species 

 shows striking age variations. 



Young males and females are white, the abdominal segments 

 ringed with black, giving a very striking, almost ghostly, appear- 

 ance to the living insect, Adult specimens appear almost black, 

 the legs bright orange. 



The eyes as seen in spirit specimens have a remarkable appear- 

 ance. The upper and lower poles are of pale gray ; there is a fine 

 equatorial belt of the same colour and on either side of this a nar- 

 row zone of brownish- black. The upper of these zones is continu- 

 ous with the dark transverse line on the frons. 



Locally this species, which is widely spread, .seems to vary but 

 little. Specimens from the Malay Peninsula, with which I have 

 been able to compare Indian examples, have perhaps a more 

 pronounced white mark at the apex of abdominal segment 8. 

 Otherwise there seems to be no differences of importance. 



