39° Records of the Indian Museum. | Vol. XXIV, 



widely divaricated, often these are longer than the upper append- 

 ages. In many cases the hinder femora are long, and have the 

 spines of their apical half at least much longer than is usually 

 the case with the other tribes of the series so far as I know. 

 The occiput of the female is generally much reduced. A longi- 

 tudinal dorsal stripe is often present on the last four segments of 

 the abdomen, lastly, the differentiation of the cross- nerves be- 

 tween Mi_.-j and M + does not seem so firmly fixed a character as 

 in the three remaining tribes of series. 



In Anisogomphus in fact, some individuals show scarcely 

 more differentiation than does Leptogomphus in this respect, others 

 in my short series show marked differentiation in the hinder- wing, 

 less or none in the fore-wing. I have not enough material for a 

 statistical study, but I believe that in Cyclogomphus about one 

 individual in four shows lack of differentiation in the fore-wings. 



An examination of the males of Podogomphus praetorius and 

 of Notogomphus sp. in the British Museum has convinced me that 

 these two genera at least, in addition to the Oriental forms here 

 enumerated, belong to this tribe. 



Genus Cyclogomphus Selys. 



Genotype : C. hypsilon Selys. 



Species examined: C. hypsilon Selys; C. heterostylus 

 Selys. 



A genus of rather small Gomphines, characterized by the pre- 

 sence of a basal antenodal nervure of 2nd series on all four wings 

 (absent from one hinder-wing of a single female specimen of C. 

 hypsilon only). The costal side of the triangle of the hinder-wing is 

 much longer than the basal side (almost twice as long in C. hypsi- 

 lon), only one cross-nerve in the submedian space of both wings. 

 Costal nerve with a fine yellow line. The pterostigma is relatively 

 long, more than one-quarter the length of the distance between 

 the nodus and the distal end of the pterostigma. 



The hinder pair of femora when adpressed reach to the end 

 of the proximal third of the second segment of the abdomen. 

 They are armed with two, rows of spines on the ventral surface, 

 and there are in addition a few scattered tubercles of minute size 

 near the base. The vulvar scale is small. 



Of the five species which have from time to time been re- 

 ferred to the genus, C. torquatus Selys is undoubtedly a Microgom- 

 phus. The small species, C. mimisculus Selys, known from a 

 single specimen, a female taken at an elevation of between 4000 

 and 6000 ft. near Tenasserim, will in all probability prove to 

 belong to a different genus. 



C. vesiculosus Selys, described from an imperfect male, has 

 been recorded from Poona by Major Fraser, but is unknown to 

 me; it appears to differ, according to de Selys' account, but little 

 from C. hypsilon, chiefly in its smaller size. 



