19 17-] F. F. IvAiDi^AW : Indian Dragonflies. 39 



R. whiteheadi would seem to be the northern race of the perfo- 

 rata series. It is distinguishable from the typical perforata by the 

 following characters : — 



{a) Absence of the backward prolongation along the costal 

 margin of the fore-wing of the dark colouring. 



(&) Absence of the hyaline border which lies along the anal 

 margin of the coloured parts of both wings. 



Genus Micromerus, Ramb. 

 35. Micromerus Iineatus» Burm. 



M. obscurus, Kirby, Cat. Odonata, p. 115. 

 .1 lineatus, id., loc. cit. 



,, Selys, Ann. Mus. Civ. Genova, (2) X (XXX), p. 62 (1891). 



Laidlaw in Fascic. Malayenses (Zoology), pt. I, p. 197 



(1903). 

 Williamson, Proc. U.S. Nat. Mus., XXVIII, p. 171, figs. 

 5, 6 (1Q04). 



I think that M. obscurus, Kirby, is a 3'oung specimen of M. 

 lineatus. It is at any rate so immature that no determination 

 from a single specimen can be satisfactory. The species ranges 

 from Ce3don through India to Assam and down the Malay Penin- 

 sula. 



One of the smallest of all the Calopterygidae, it has a more 

 extensive range than any, save a very few. 



I have seen a specimen from Gopaldhara, Assam, taken by 

 Mr. Stevens, with the note, ' undoubtedly rare.' 



I believe that Martin regards the Ceylon species as worth 

 subspecific rank, and refers to the same subspecies examples from 

 the Andaman Islands. 



36. Micromerus finalis, Selys. 



M, finalis, Kirby, Cat. Odonata, p. 115. 



A species apparently peculiar to Ceylon. 



Micromerus hlandiis, Selys, from the Nicobar Islands is no 

 doubt a local race of M, lineatus and is probably the same as that 

 from Ceylon which Martin regards as subspecifically distinct. I 

 have seen in the British Museum examples labelled by Mr. Martin 

 from Ceylon and from the Andamans, with a varietal name. This 

 name has not been published and is not likely to be for some time. 

 As I do not wish to anticipate Mr. Martin, I will do no more than 

 refer to the matter here. 



Genus Libellag^o, Selys. 

 37. Libellago asiatica, Selys. 



Libellago asiatica. Kirby, Cat. Odonata, p. ii2. 



"Selys, Ann. Mus. Civ. Genova, {2) X (XXX^ pp. 



58-59. 

 Martin, Mission Pavie. Neuropt^res (sep.), p. 17. 



