1922.] F. C. Fraser : Indian Dragonflies. 419 



Gomphus sp. 



A single female, Gudalur, Nilgiri Wynaad, 3500 ft., 8'vii'2I, coll. F. C 

 Fraser. 



Female. Abdomen 34 mm. Hindwing 30 mm. 



Head black, marked with citron yellow as follows : lateral 

 lobes of labium, 2 large basal spots on labrum and the bases of 

 mandibles. A minute spot in the centre of epistome and a larger 

 one on each side against the eyes ; the frons, which is rounded , 

 with a broad stripe on its upper surface ; occiput simple, black , 

 fringed thickly with very long black hairs ; eyes bottle green. 



Prothorax black with a large triangular citron yellow spot on 

 either side. 



Thorax black on dorsum with a complete, broadly joined, 

 mesothoracic collar, prolonged slightly upward along the dorsal 

 carina, an oblique, short, dorsal stripe well separated above and 

 below from the alar sinus and the mesothoracic collar respectively. 

 A humeral stripe represented by a small upper spot and a vesti- 

 gial streak below. Laterally citron yellow, the sutures outlined 

 in black. The thorax is coated with long, rather dense, black 

 hairs. 



Legs all black, hind femora with a row of n to 12 robust, 

 evenly spaced, gradually lengthening spines on either side of the 

 limb. 



Wings slightly enfumed, saffronated at the extreme base as 

 far out as the triangles which are all entire ; stigma short, red- 

 dish brown, braced ; no basal antenodal nervure of the 2nd series ; 

 1 to 2 cubital nervures in forewing, only 1 in the hind ; 2 rows of 

 cells in the postanal area of forewing, 4 to 5 in the hind ; 2 rows 



15-15 



of cells between M{ and M( a in all wings ; nodal index — — - 



13-10 11-12 



(two of the postnodals of forewing are connected by a nervure and 

 another is forked) ; 2 rows of cells as far as the level of node. 



Abdomen black, marked with brilliant citron yellow as follows : 

 the dorsum and sides of segment 1 broadly, 2 with a trilobed, 

 dorsal stripe and the sides very broadly. 3 with the middorsal 

 carina finely and two large lateral spots, 3 to 7 with basal annules 

 notched by the black on the dorsum except on 7 where the apical 

 border of the spot is straight, on 8 the basal spot a mere fine line, 

 9 and 10 with apical annules, broad on 9, narrow on 10. 



Anal appendages black ; segments 7 to 10 progressively 

 shortening ; vulvar scale very tiny, barely evident. 



This handsome species will probably prove to be the type of 

 a new genus but until the male is found will have to be confined to 

 genus Gomphus sens. str. of which it at present forms the smallest 

 species. 



Gomphus nilgiricus Laid. 



A single female, Coonoor, June 1917, coll. F. C. Fraser. 



Abdomen 43 mm. Hindwing 40 mm. 



This specimen was picked up dead, a small army of ants 



