7^ Mr. "\V. F. Kiiby on Oihnatafrom Sierra Leone. 



Described from tliree specimens (2 c? > 1 ? )j '^1^ more or 

 less damaged and perhaps not quite mature, captured on 

 Sept. 2, 9, and la (1899). 



Beblecia adolescens. 



Crocothemis erythnea. 



Zihelliila erythrcea, Brull^, Exped, de la Moree, iii. (1) p. 102, pi. xxxii, 



tifr. 4 (18:32). 

 Crocothemis erythr<ea, Kirb, Cat. Neur. Odon, p. 21. n. 1 (1890). 



19 specimens, Aug. 25 to Sept. 22 (1899). 

 Specimens from West Africa are rather smaller and 

 slenderer than typical ones from South Europe. 



Thermorthemis Austem\ sp. n. (PI. II. figs. 1, 1 a.) 



Long. corp. 54-56 millira. ; exp. al. 94-98 millim.; long. 

 pter. 4 millim. 



2fale. — Rufo-testaceous, thorax with a slight brown line on 

 each .shoulder and the borders of the patagia black ; abdomen 

 in the male pulverulent blue. Legs black in the adult male, 

 except at the base of the femora ; otherwise rufo-testaceous, 

 with black tarsi; spines strongly developed. Wings hyaline, 

 with black nervures, very slightly tinged with yellowish 

 brown at the base ; pterostigma yellow, between black ner- 

 vures; tips very slightly browned. Fore wings with 20-23 

 antenodal (the last continuou.e) and 13-14 postnodal cross- 

 nervui cs ; triangle divided by two nervures ; two supra- 

 triangular nervures ; triangle followed by four rows of cells, 

 increasing subtriangular .'^pace consisting of 5-8 cells : hind 

 wings with 13-15 antenodal and 13-16 postnodal cros.s- 

 nervures ; triangle traversed and with the base generally 



