242 Mr. W. F. Kirby on Dragonflies 



Wings clear hyaline, with brown nervures ; costal nervures 

 and some of the cross-nervules yellowish j pterostigma 

 tawny, between dark nervures, covering 1\ cells. Fore 

 wings with 12 antenodal and 5 postnodal nervules ; 2 or 3 

 supra- triangular nervules, 4 cross-nervules in the lower basal 

 cell, triangle free, followed by 1 or 2 rows of cells increasing. 

 Hind wings with 8 or 9 antenodal and 7 postnodal cross- 

 nervules ; 1 supra-triangular nervule ; 3 cross-nervules in the 

 lower basal cell. Membranule white, blackish towards the 

 extremity. 



Female similar, but paler, the first six segments of the 

 abdomen yellow at the base and beneath, with a short dusky 

 streak on the back and sides. Head yellow, slightly varied 

 with tawny. Wings clouded with smoky yellow on the 

 outer third; fore wings with 12 or 13 antenodal cross-nervules ; 

 hind wings with 8 or 9 antenodal and postnodal cross-nervules ; 

 otherwise nearly as in the male, but slightly larger, measuring 

 78 millim. in expanse. 



Closely allied to P. trifasciata, Ramb., from Madagascar, 

 but differing in the yellow pterostigma, the smaller number 

 of antenodal and postnodal cross-nervules, and in its general 

 markings. 



^schnidae. 



27. Lindenia cognata. 



Gomphus cognatus, Ramb. Ins. Nevr. p. 167 (1842) 



Three specimens. 



Pretoria [Distant), 



A fairly common species in South Africa. 



28. Lindenia, sp. 



One specimen. 



Zoutpansberg {Kcessner). 



A broken specimen of what is probably a new species 

 resembling the Indian Z.^rammi'ca, Ramb., but with 12 or 13 

 antenodal and 11 or 12 postnodal cross-nervules on the fore 

 wings. 



29. Ictinus ferox. 



Ictmusfe)-ox, Rami). Ins. NtSvr. p. 172 (1842). 



One specimen. 



Fort Johnston, Nyasaland {P. Rendall). 



