Ml. W. F. Kirby on Odonata from Sierra Leone. Tii 



placed a little m-aivr the base of the wings than the arciilus ; 

 one supratrian^uhir nervine; sectors of tiie areulus slightly 

 separated, the lower onecoinciding with the baseof the triangle. 

 Abdomen with strong black median and lateral serrated carinai; 

 terminal apj)endages of male as long as the nintii segment, 

 the lower ajtnendage broatl, half as long as the others, 



Fenuile. — IJniform riifo-testaeeous, moiith-jiarts inclining 

 to yellowish, dark shoiilder-stripe slightly indicated, cariiue of 

 abdomen black, eighth segment perfoliate. 



This species agrees with T. nuidai^ascan'ensisj Ramb., in 

 general neuration, the bifid frontal tubercle, the Orthttrum- 

 like frontal depression, &.C., but differs in the fewer and 

 stronger spines on the hind tibiiu. 



Described from five male specimens, one taken by 

 Mr. Austen at Sierra Leone on Sept. 21, 1899, and the others 

 from West Africa, without special locality. 



The single female is from Sierra Leone {Morgan). 



I ap])end the description of an allied species from Angola^: — 

 Female. — Dark brown ; head testaceous; under surface and 

 terminal segments inclining to ferruginous ; eighth sogment 

 jiertoliate, with the edges black. Wings yellowish hyaline, 

 vith black nervures : tore wings with 19 antenodal and 12 

 postnodal cross-nervures; neuration otherwise as in T. Austeni. 

 One specimen from Angola, collected by 3Ir. and Mrs. 

 Monteiro. 



Tliermorthemis leonina. 

 Orthetrum leoninum, Karsch, Eut. Nachr. xvii. p. 59 (1891). 



Two specimens (cJ ? ) from Sierra Leone, the male taken 

 by Mr. Austen on Sept. 2, 1899, and the female taken by 

 Dr. W. G. Clements. 



The insect is a true Thprmorthemis, except that the body is 

 more slender, and the hind tibitc have fewer and stronger 

 spines than in T. tuudtujascariensis ; but it shares the latter 

 chaiacter with T. Austeni. In the male the triangle of the 

 fore wings is followed by four rows of cells increasing, and in 

 the female by five, shrinking to four and then again increasing. 



Apeleuthekus, gen. no v. 



Male. — Frontal tubercle strongly bitid ; front large and 

 broad, projecting beneath it to about half the width of the 

 eye, almost quadrangular, with a conspicuous median depres- 

 sion. Eyes connected for a short space. Legs rather long, 



* Theniiort /terms Monteiroi, sp. u. 



