368 Mr. R. M'Lachlan on Odonata from 



costal portion of the posterior ; neuration black ; ptero- 

 stigraa long (3^ millim.), yellowish brown; 14 antenodal and 

 13 postnodal nervules in the anterior wings. 



Length of abdomen, $ 40 millim. j length of posterior 

 wing, ? 35 millim. 



Siao-Lou (Szechuen), one female. 



Notwithstanding that the male remains unknown, there 

 can be little doubt that this species is allied to G. mehenops, 

 Selys, and G. JPryeri, Selys, both from Japan. Both of 

 these show an analogous conformation of the occiput, but in 

 a much less pronounced manner, and are of the same general 

 aspect but larger. The condition of the vulvar scale in 

 G. scissus is remarkable. 



Subfam. COMDULEGASTXINA. 



Anotogaster Sieboldii, Selys. 



Moupin, one male, two females. 



These seem to possess some slight differences when com- 

 pared with numerous examples from Japan and North China. 

 The two yellow spots at the base of the labium are appa- 

 rently smaller ; the yellow in the excavated portion of the 

 top of the front is reduced to a mere marginal thread (virtually 

 obsolete in one very adult female), and the wings of the 

 female seem more strongly w T ashed with yellow up to the 

 triangles, almost as in A. nipatensis and A. basalts. Possibly 

 the stature is slightly less robust. It would be necessary to 

 see more materials before deciding if the differences alluded 

 to are constant and worthy of the imposition of a varietal 

 name. 



Cordulegaster luniftrus, Selys, and var. pekinensis, Selys. 



Four males and two females from Siao-Lou, Mo-si-mien, 

 and other localities in Szechuen. Of these 1 should be 

 inclined to refer three males to luniferus and one male and 

 two females to j/ekinensis, irrespective of locality, according 

 to description. Having now so much more material before 

 me, the distinctness of luniferus and pekinensis seems very 

 doubtful. 1 have seen no male so large as is indicated for 

 pekinensis. 



Subfam. zEschnina. 

 JEschna ornithocephala^ sp. n. 

 c£. Head: labium and palpi brownish; labium and face 



