NO. 1389. DRAGONFLIES OF BURMA AND SIAM— WILLIAMSON. 



185 



i8. MNAIS EARNSHAWI, new species. 



Material studied: Burma, collection Williamson, 22 males, 2 females. 

 Abdomen, male 40 mm., female 34; hind wing, male 33 mm., female 30. 



2fale. — Venation yellowish red throughout, excepting- that the costa 

 becomes darker toward the wing base, wing membrane throughout 

 tinged with bright yellow, slightly paler basal to the arculus and slightly 

 denser along the anterior half of the wing on either side of the nodus, 

 throughout with bright pink and violet reflections. The last 3 seg- 

 ments of the abdomen not pruinose in 6 of 17 specimens; the dorsum 

 of the thorax pruinose in 1!> specimens, but not pruinose in 1 very 

 teneral individual. 8o far as my material goes this difference in prui- 

 nescence seems to clearly indicate specific differences between ander- 

 sonl and earnshaiol; in the case of anderson! the pruinescence is first 



Fig. 16. — Wings ok fj:male jinais eaknshawi fkum Buk.ma. 



clearly marked on the last abdominal segments, and if it appears at 

 all on the thorax it is at a stage of maturity not reached by the 2 

 apparently mature males I have seen; earnsJiairl^ on the other hand, 

 becomes pruinose first on the thorax, and it is only in more niature 

 individuals that the pruinescence appears on the abdomen. Of 40 

 antenntE of earnshawi examined 13 had the second segment about i 

 yellow, while 27 had this segment more than ^ yellow. Of 70 wings of 

 this species 7 wings had two rows of cells for at least a short distance in 

 the poststigmal costal space. A very teneral male has the wings and 

 stigma pale salmon in color. The 2 females in this case, as in the case of 

 coidci'xonu are referred to c<irn><hairi only because of their association 

 with the males. One of them, somewhat teneral, has the body colors 

 bright green throughout; the second segment of the antennge is yellow, 

 excepting an apical point; and the stigma is dull white. In the other 

 female the stigma on one front wing is all but wanting, being reduced 



