1920.] F. F. Laidlaw : Indian Dragon/lies. 155 



posed the name quercifolia, but this form is also represented in the 

 same collection. The thoracic pattern in the Sitong specimens, 

 which are in better preservation than those from Sibsagar, is 

 distinctly serrate. In an example from Ceylon the pattern is more 

 irregular, this apphes also to specimens from the Malay Peninsula 

 (Skeat expedition), wh'lst in the British Museum material from 

 the Celebes it is decidedly reduced. 



10. Lestes barbara ( Fabr.). f 



Lestes barbanis, Kirby, Cat. Odonata, p. 162. 



,, ,, Calvert, Proc. Acad. Nat. Sci. PhiladelpJiia, 1898, p. 147. 



I rf Jhelum Valley, 5,200 ft., Kashmir, N. W. Himalayas, 



6-X-16 {H. T. Pea^e), ^. 

 A widely ranging Palaearctic species. 



II. Lestes orientalis, Selys. 



Lestes orientalis, Kirby, Cat. Odonata, p. 163. 

 ,, ,, id., Joiim. Linn. Soc. Zool. XXIV, p. 566. 1 



This fine species, equalling the largest members of the group 

 in size, appears to be especially characteristic of Ceylon and 

 S. India. I have not seen an example. 



12. Lestes sp. ( ?==PIatyIestes platystyla (Ramb.). f 



(PI. V, fig. 7 and text-figs. 4, 5). 



I cr ''Found in collapsed condition on stairs of [Museum 

 building, Calcutta," i3-xi-i7. 



The type of Platylestes platystyla (Ramb.) is a unique female 

 specimen described by de Selys. It is also the genotype. 



The Museum specimen agrees fairly well in the important 

 character of the short, squarish pterostigma with the genotype, 

 save that in the male the pterostigma is distinctly less than twice 

 as long as broad (the generic definition, based of course on a 

 female, states that the pterostigma is a peine deux fois et demie 

 aussi long que large"). ^ Further in general the dimensions agree 

 fairly well : — 



Platylestes platystyla $ abd. 33 mm., hind-wing 23 mm. 



Museum specimen cf abd. 32 -h 1*5 mm., hind-wing 21 mm. 



lyastly the colouring is not dissimilar though the male has 

 black spots on the thorax not present in the type, and in general 

 the male is not very unlike a Platycnemis in colouring and in the 

 shape of the pterostigma. 



This comparison with the type is made by de Selys. In the 

 generic definition, however, he emphasises the point that the sub- 

 nodal sector {Ms) is angulated, evidently in contrast with the non- 



1 I think Selvs must have meant one and a half times. 



