422 Records of the Indian Museum. [Vol,. XXIV, 



I^egs entirely black except the anterior pair of femora which 

 are pale whitish green outwardly ; hind femora with a row of long 

 robust spines to the number of 6 on the distal half. 



Abdomen tumid at base, very narrow and cylindrical from 3 

 to 6, remaining segments dilated, especially apex of 7 and whole 

 of 8. Black, marked with citron yellow as follows : 1st segment 

 entirely yellow save for two black dorsal spots ; 2 with a trilobed 

 dorsal spot the oreillets and an apical spot ; 3 to 4 with the dorsal 

 carina finely yellow and a lateral stripe, broadest at the base and 

 not extending quite as far as apex ; 5 to 7 with the lateral basal 

 spot meeting over the dorsum and on 7 occupying the basal half 

 of the segment; remaining segments black. 



Anal appendages as for type, the superior pale yellow, inferior 

 black. 



Indogomphus, gen. nov. 



Wings with a basal antenodal nervure of 2nd series to all 

 wings, all triangles entire, the triangles of hindwings elongate, 

 sectors of arc approximating immediately after the arc, 3 trans- 

 verse nervures between M^m and Mj v in forewing, only one in 



the hind, C%<{ and Cun a little divergent in the hindwing, 4 rows 



of cells posterior to Cun in the hind wing, forking of Mj_jj and 



Mm symmetrical, discoidal field divergent, 3 to 4 rows of cells 



at level of node, 3 rows of cells between Mi and Mi a at distal end 



of stigma, only 1 row of cells (occasionally 2) at base of forewing , 

 base of wing rather oblique- as in Anisogomphus and angle not 

 prominent. 



Anal appendages of male very similar to those of Heliogomphus. 

 Vulvar scale broadly triangular, almost equilateral, the apex with 

 a small rounded notch. 



Indogomphus longistigm^, sp. nov. 



A single pair from the Nilgiri Wynaad, 3000 ft., I4"viii"2i, coll. K. C. 

 Fraser. 



Male. Abdomen 44 mm. Hindwing 35 mm. Hindwing 37 

 mm. in the female. 



Head entirely black save for a broad greenish yellow line on 

 the frons overlapping the front and a broad line on the occiput of 

 the same colour. The frons finely black at the base and the occiput 

 black at either end and fringed with remarkably long black hairs. 

 Eyes bottle green. 



Prothorax black, the posterior lobe and a small oval spot 

 adjoining it anteriorly and a band on its anterior border pale 

 yellow. 



Thorax black, marked with bright yellow as follows : a com- 

 plete mesothoracic collar which sends a prolongation up along the 

 middorsal carina as far as the alar sinus ; a narrow dorsal stripe 

 close alongside the middorsal carina reaching the alar sinus above 



