iq22.J F. F. Laidi.aw : Indian Dragonflies. 391 



Cyclogomphus hypsilon Selys. 



12c 7 6 . 92 2- Poona, Kartraj Lake, Aug., Sept., 1918. 



The pterostigma is uniformly brown, enclosed between dark 

 brown nerves, whilst in the next species (C. hetero stylus, Selys) it 

 is dark in the centre, and distinctly paler for its outer third. Fur- 

 thermore, the light markings on the dorsum of the terminal seg- 

 ments of the present species are more extensive. Colouring varies 

 much with age and state of preservation. 



I'Ki. II. — Abdomen of Cyclogomphus hypsilon Selys, cf , seen from above. 



Length of abdomen of cr 28 mm., of hinder-wing 25 mm. ; 

 length of abdomen of 2 30 mm., of hinder-wings 26 mm. 



Cyclogomphus heterostylus Selys. 



2r? c* , i $ . Poona, 19-ix-ig. i2- Darjiling, 4-VH-18. I 2 , St. Thomas 

 Mount, .Madras, 9-iii-i8 (all From Major V. C. Fraser). 



I cannot find any characters by which to distinguish the Dar- 

 jiling specimen from the female from Poona. The males agree 

 precisely with the figure given for this species in the monograph. 



Length of abdomen of c* 285 mm., of hinder-wing 26 mm. ; 

 length of abdomen of ? 30 mm., of hinder-wing 265 mm. , 



Genus Anisogomphus Selys. 



Genotype : A. occipitalis (Selys). 



Species examined: A. occipitalis (Selys) ; A. oriles, sp. 

 nov. 



A genus of medium-sized Gomphines, distinguished from Cyclo- 

 gomphus and Temnogomphus by the absence of a basal antenodal 

 nervure of 2nd series. The costal nerve is black, and in general 

 the colouring, especially in adult specimens, is rich but more sombre 

 than in allied genera. Pterostigma relatively shorter than in 

 Cyclogomphus. The inferior anal appendage of the male carries two 

 stout rather widely divaricated branches, the superior appendages 

 are coloured (in Indian species), each carries a stout black ventral 

 process. The occiput of the female is much reduced. The vulvar 

 scale has a length of about two-thirds of the ninth segment, its 

 apical quarter is cleft. 



Hindermost femora when adpressed reach to the middle of the 

 second segment of the abdomen. Their armature consists of two 

 rows of spines on the ventral surface, rather irregularly spaced, 

 and varying a little in length, those placed more distally being on 

 the whole the longer. 



