NEITEOPTEEA ODONATA OF CETLON. 549 



*t6. EhTOTHEMIS YAEIEaATA. 



Libellula variegata, Joh. Amoen. Acad, vi. p. 412 (1764), 



Libellula marcia, Drury, III. Ex. Ent. ii. pi. 45. fig. 3 (1773). 



Trincomali, Nov. 1 & 11, 1891. Kanthalai, Nov. 15, 1891. 



Eambodde {Hageii). 



A common East-Indian species. 



7. EhTOTHEMIS PHYLLIS. 



Libellula phyllis, Sulz. Gesch. Ins. pi. xxviii. fig. 2 (1/76). 

 A common East-Indian species, noted by Baron de Seljs- 

 Longchamps as occurring in Ceylon. 



8. EhTOTHEMIS OBSOLESCENS. 



Rhyothemis obsolescens, Kirb. Trans, Zool. Soc, Lond. xii. p. 321 

 (1889). 



Described from Borneo ; stated by Baron de Selys- Long- 

 champs {in litt.) to occur in Ceylon. 



*t9. Ehyothemis lakkaka, sp. n. 



Long. Corp. 24 millim. ; exp. al. 36 millim. ; long. pter. 1^ 

 millim. 



Male. Peep violet-black ; Head steel-blue, with the clypeus and 

 labrum bordered beneath with testaeeus. "Wings clear hyaline, 

 with pale yellowish pterostigma ; dark brown towards the base, 

 with violet reflections ; the centre of most of the cells lighter, a 

 more or less hyaline basal streak below tbe princijial radius ; and 

 on the hind wings 2 or 3 short subhyaline stripes running 

 towards the inner margin. Pore wings with 1 cross-nervure in 

 the triangle ; post-triangular cells, 3 or 4 in the first row, fol- 

 lowed by a series first of 3 and then of 2, only increasing to 4 

 on the hind margin; 7 autenodal and 6 or 7 postnodal eels, the 

 last autenodal and 2 first postnodals not continuous ; the post- 

 nodals rather irregular in the lower space ; subtriangular space 

 consisting of 3 cells. On the fore wings the opaque portion 

 extends to between the 4th and 5th autenodal cross-nervures ; it 

 projects a little on the lower subcostal space, and then runs 

 obliquely just beyond the triangle, but does not quite extend to 

 the inner margin. Hind wings with 5 autenodal and 6 post- 

 nodal cross-nervures, the first two postnodals not continuous ; 

 the opaque portion extends to the nodus, without a break, and 

 runs down to the hind margin almost beneath it, but is twice 



