82 British Dragonflies. 



pi. xxi., f. 2 (1845). Sympctnnii fiavcolum, McLach. 

 Cat. Brit. Neur. 12 (1870); Kirby Syn. Cat. Neur. 

 Odon. 13 (1890). Lib. flaveolata, Linn. Faun. Suec. 

 372, n. 1460 (1761). Synip. fiavcolatiiiii, Newm. Ent. Mag. 

 i. 513 (1833-8). Lib. rubra, Miill. Faun. Ins. Friclr. 62 

 n. 550 (1764). Lib. aurca, Scop. Ann. Hist. Nat. v. 

 120 (1772 J. Lib. flavesccns, Fisch. Vers. Nat. Liv. 335 

 (1778). Lib. victoria, Fourcr. Ent. Par. ii. 348, n. 16 

 (1785). Syinp. aurantiacnni, Buch. Syst. Ent. Odon. 9, 

 t. 8, f. I (1878) 



Linnaeus' description. 



L. alis basi luteis. . . . Ha^c inter minores ; 

 variat rarius alis absque basi lutea ; forte sexu (C. 

 Linnaeus, " Systema Naturae." Ed. x. 543, n. 2, 1758). . . . 

 Lib. fiavcolata alis albis basi luteis. Descr. Dorsum 

 luteum ; subtus tota nigra ; thorax niger utrinque maculis 

 duabus obliquis flavis, pr^eter lineas duas flavas, pre- 

 cedentes. Pedes nv^ri. Fivus x'wcscqws. O cu I i gnscx. A he 

 omnes basi lata flava macula (C. Linnaeus, " Fauna 

 Suecica," p. 372, n. 1460. Ed. ii. 1761). 



Size. 



Length of Male, 31mm. to 37mm. ; expanse of wings, 

 48'5mm. to 60mm. Length of Female, 33mm. ; expanse 

 of wings, 56mm. (Female measurements from two 

 continental specimens). 



Male Imago. 



Face yellowish-brown, lower lip reddish, with middle 

 lobe black, frons pale red ; a distinct black line in front 

 of the vertex extending along the side of the eyes. 

 Eyes dull reddish. TJiorax deep red, with the projec- 



