424 On some Odonata of the Subfamily iEschnina. 



4 cellules in principal triangle, 1 in inner ; 2 (rarely 1) supra- 

 trigonals ; no basal subcostal, 3 or 4 in median area; 3 (ab- 

 normally 2) cellules in anal triangle. 



? (slightly immature) . As in male ; abdomen much varied 

 witli whitish at the sides of segments 1 to 3 and at the base 

 of segments 4 to 9 (mostly in the form of a spot on each 

 segment), a whitish lunule above on each side of the dorsal 

 crest on segment 2. Appendages long (5 J millim.) , brownish, 

 in the form of flattened blades, narrowed internally at the base 

 and rounded at the apex; tenth ventral segment apically 

 covered with rather dense blackish teeth ; there are mostly 

 four rows of cellules between the branches of the sector, with 

 4 cellules on the margin, the neural details otherwise varying 

 little. 



Length of abdomen, g {cum append.) 45, ? 45 millim. ; 

 length of posterior wing, $ 42, $ 45 millim., greatest 

 breadth, <J 14, ? 15 millim. 



Hab. British Caffraria (S.E. Africa), one male; Transvaal, 

 one female. 



Remarkable for the subpupillate markings of the top of 

 the front and for the greatly produced genital parts of the 

 second segment of the male. 



I have examined the types of JE. Elliott, Kirby, from 

 Central Africa, which species is perhaps allied to JE. minus- 

 cula, but differs in the appendages &c; it is not possible 

 to define the form of the spot on the top of the front on 

 account of the condition. 



jE. Rileyi } Calvert, should belong to another group, being 

 much larger and with humeral as well as antehumeral bands. 



Boyeria (new name). 



= Fonscolombia, Selys (1883), preoccupied by Lichtenstein in Herni- 

 ptera (1877). 



The genus remains named in honour of E. L. J. H. Boyer 

 de Fonscolombe. 



PLANiESCHNA, gen. 



nov. 



$ . Face short, subglobose. Eyes connected in a rather 

 long space; occiput very small. Thorax short. Abdomen 

 moderate, inflated at the base and afterwards constricted; 

 tenth ventral segment rounded, minutely denticulate. 



Wings rather broad, reticulation moderately dense ; mem- 

 branule large ; pterostigma moderate ; subcosta not continued 

 beyond the nodus ; basal area not reticulated ; supra-trigonal 



