1917-] F- F- IvAiDLAw : Indian Dragonflics. 335 



cf Abdomen 40 mm., hind-wing 26 mm. 

 9 (much shrivelled) ,., 25'5 mm. 



" Thorax sky-blue and black ; abdomen black with blue tip." 



cf Adult. — Head black, anteclypeus and genae blue. Post- 

 ocular marks of the same colour, almost circular. 



Prothorax black, with a pair of small lateral spots which are 

 blue. 



Thorax black above, a pair of oblong-oval blue spots on either 

 side of the mid-dorsal carina, extending to about the lower two- 

 fifths of its length, and above these a much smaller pair of linear 

 blue marks. Sides and under surface yellow with black line along 

 second lateral suture. 



Abdomen. — Segments 1-2 black, with some yellow at the sides, 

 and a small median dorsal blue line on 2 ; 3-8 brownish-black, 

 each with a very small pair of yellow spots laterally at its apex ; 

 g-io blue above, basal third of 9 black. Anal appendages: upper 

 pair black, tipped with yellowish- white at the extremity ; with a 

 fine black basal tooth, and a larger hook-like projection at the end 

 of the middle third, both directed downwards ; apex subacute. 

 Lower pair brown, pincer-like, a little longer than the upper 

 pair. 



9 In poor condition, immature and shrivelled. The thorax 

 shows a pair of yellow antehumeral bands. 



It is evident that this species strongly resembles C. octogesima 

 (Selys). I have not access to any authentic example of the latter 

 species and the published descriptions are not very full. It would 

 appear to be smaller than C. simillima, and to differ in details of 

 colouration. Granting the venational characters to be constant 

 there should be no difficulty in separating the two species. 



Coeliccia didymat Selys. 



Coeliccia didynia, Kirby, Cat. Odonata, p. 123 (1890). 



I have not seen an authentic example. 



Coeliccia bimaculata, Laidlaw. 



Coeliccia bimaculata, Laidlaw, Rec. hid. Mas. WW, iv, p. 341, pi. xvi, 

 ^\g. I (1914). 



I <S' Abor Expedition. 



The specimen is rather immature. The statement that the 

 space between the quadrilateral and nodus is occupied by a single 

 cell is true only for one wing, the right hind- wing, the other wings 

 in each case have two cells in the space, i.e. one cross nerve, the 

 latter condition is probably normal. 



Unfortunately the account of C. didyma is not very full, and 

 it is not possible at the present time to see the type specimen. I 

 note the following differences between the description of C. didyma 

 and the type of C. bimaculata. 



