lOO British Dragoiiflics. 



7. Libellula depressa, Linn. 



(Plate IV.) 



Synonymy. 



Libellula depressa, Linn. Syst. Nat. 544, n. 5 (1758); 

 Linn. Faun. Suec. 372 (1761); Charp. Lib. Lur. 6^, t. 4 

 (1840); Selys Mon. Lib. Eur. 34 (1840); Selys Rev. 

 Odon. 8 (1850); Hag. Ent. Ann. 40 (1857); Kirby 

 Trans. Zool. Soc. Lond. xii. 284, t. 55, f. i (1889) ; 

 Kirby Syn. Cat. Neur. Odon. 24 (1890). Platetniin 

 depressum, McLach. Cat. Brit. Neur. 12 (1870). 



Linnaeus' description. 



L. alis omnibus basi nigricantibus, thorace lineis 

 duabus flavis, abdomine depresso-lanccolato lateribus 



flavescente Hkc interdum abdominis tergo 



cserulescente occurrit. (C. Linn.xus, " Systema Naturae," 

 p. 544, n. 5, 1758.) DesCR. Faeies lutescens. Thorax 

 villosus, pallido-vircns, antice linea flava. Alee macula 

 marginali atra ; et omnes basi nigro-ferruginea,- ; intimo 

 margine albo. Abdoiiteu lanceolatum, cinereo-virescens, 

 segmentis 3, 4, 5, 6, 7 lateribus luteis ; apice obscure 

 ferrugineo ; ano setis duabus subularis brevissimis. 

 Femora basi livida. Pedes nigri. (C. Linnaeus, " Fauna 

 Suecica," p. 372, n. 1463, 1761.) 



Size. 



Length of Male, 47mm. ; expanse of wings, 75mm. 

 Length of Female, 42mm. to 44mm. ; expanse of wings, 

 75mm. to 78mm. 



