33^ Records of the Indian Museum. [Vol.. XIII, 



Copera vittata (Selys). 



Copera vittata, Kirby, Cat. Odonata, p. 129 (iSyo). 



,, ,, see Forster in Laidlaw, Fasc. Malay. (Zool.) iv, 2, p. 7. 



,, ,, Laidlaw, Rec. Ind. Mus. VIII, iv, p. 342. 



The males of this species are characterized by the absence or 

 slight indication of dilatation of the four posterior tibias, and by 

 the length of the upper pair of anal appendages^ which equals one- 

 half (roughly speaking) that of the lower pair. 



In the case of this species it is possible to recognize a certain 

 number of races which appear to be quite clearly defined. 



1 have been able to compare specimens from three localities 

 only, from Borneo, Assam, and Cochin State, S. India ; the adult 

 of the typical race from the Malay Peninsula is unknown to me. 

 Also I regret I have not more than a few specimens available in 

 each case, and no females from Assam. 



The Bornean race C. vittata aiomaria, Selys, is very distinct, 

 the upper surface almost entirely black ; in the adult the ante- 

 humeral bands of the thorax are obsolescent , segment 10 of the abdo- 

 men remains yellowish-white, and the upper surfaces of the anal 

 appendages are of the same colour. The legs are of a rich orange- 

 brown and the tibias show no indication of lateral dilatation. 



Length of hind-wing 19 mm., of abdomen 32 mm. 



The Assam race C. vittata assamensis , Laidlaw, is largely rus- 

 set-brown in colour, notably the vertex which in the other two 

 races noted here is intense black. Likewise the upper surface of 

 the abdomen is dark brown, and the white apical mark begins on 

 segment 9. The legs are brown, quite different from, the reddish 

 legs of C. aiomaria, or the bright yellow legs of the next race. 



Copera vittata dcccanensis, subsp. nov. 



2 a' I 2 Parambikulam, 



cf Adult. Head. — Upper lip, genae and anteclypeus greenish- 

 white, frons and occiput black, with a broad creamy- white trans- 

 verse band covering the ocelli. A pair of linear post-ocular lines. 



Prothorax black above, with lateral yellow marks, bright 

 lemon-yellow below. 



Thorax black dorsally, creamy white antehumeral bands 

 present, sides yellow, mottled with black. 



Abdomen black, segment 2 with fine longitudinal yellow line 

 dorsally ; 4-7 with small apical bluish- white lunules, 9 white above, 

 10 entirely white. 



Anal appendages. — Upper pair white, lower pair white tipped 

 with black. 



Legs lemon-yellow, the posterior pairs of tibias distinctly 

 though slightly dilated. 



Length of hind-wing i6'5 mm., of abdomen 29 mm. 



The female is coloured as the male, though duller, the legs and 

 under surface of the thorax being of a dull white. On segment 9 

 of the abdomen is a square apical white mark. Segment 10 is 



