DRAGONFLIES FROM BANGKOK. 233 



Female. Very similar to the male but not pruinescent. 

 Differs as follows: — Thorax uniformly golden yellow marked with 

 an oval spot of brown on the upper part of the humeral suture, a 

 small, obsolete, diffuse spot on the lower part of the first lateral 

 suture and a streak on the postero-lateral. The first and last spots 

 are inclined to be metallic in some lights. 



Abdomen reddish yellow, the sutures finely black. First 

 segment with a broadish, subdorsal, black, longitudinal stripe ; 3rd 

 with a diffuse, brownish, transverse spot just behind the transverse 

 suture ; on the 4th to 8th, posterior to the transverse suture a black- 

 ish brown streak incomplete apically, merging on the 7th and 8th 

 with the dark brown which covers most of these segments and the 

 whole of the 9th and 10th. 



Anal appendages short, conical, pointed, dark brown. 



Genital valves, two small, triangular, leaf-like flaps. 



Saffronation of the wings at the base not nearly so marked as 

 in the male. 



I have named this species after Dr. Malcolm Smith. 



11. RHYOTHEMIS VAR1EGATA Joh. 



12. RHYOTHEMIS PHYLLIS. PHYLLIS Sulz. 



13. Tholymis till a kg a Fabr. 



14. Pantala flavescens Fabr. 



15. UltOTHEMIS SIGNATA SIGNATA Burni. 



16. Zyxomma obtusum Alb. 



Sub-family Gomphinse- 



17. Ictinus praecox Selys. 



Sub-family Aeschninse 



18. Anax guttatus Burm. 



Sub-family Coenagrioninse 



19. Agriocnemis d'abreui Fraser. 



20. Agriocnemis incisa Selys. 



21. Agriocnemis binocellata, sp. nov. 



(Fig. I. a and b.) 



Male. (Only one specimen.) 

 Abdomen 24 mm. Hind wing 14 mm. 



VOL. IV, NO. 4, 1922. 



