BRITISH DRAGONFLIES OF OLDER ENGLISH AUTHORS. 215 



One male, two females. In coll. H. J. Adams. 



This species is closely allied to B. goodrichi, Dist., from which 

 it may be separated, in the male, by its much wider and yellower 

 discal bands, and in the female by the total absence of discal 

 bluish grey scaling. The second female obtained has the lower 

 spot of discal band wanting in both wings. 



Lynton Villa, Sydney Road, Enfield. 



BKITISH DRAGONFLIES OF THE OLDER ENGLISH 



AUTHORS. 



By W. J. Lucas, B.A., F.E.S. 



(Continued from p. 175.) 



5. J. F. Stephens: ' Illustrations of British Entomology,' vol. vi. 

 Mandibulata, 1828-46. [Mandibulata 1835-37. Dragonflies, 

 1836.] 



In 1829 Stevens published A Systematic Catalogue of British 

 Insects, which is simply a list without any description whatever ; 

 but the work before us takes more the form of monographs of 

 the various groups. As regards the Dragonflies, we find careful 

 descriptions of all that were known to the author. Unfortu- 

 nately his estimate of the number of species was much exagge- 

 rated, and this makes his work of very little practical use at the 

 present day. 



Family I. Agrionid^. 

 Genus Agkion. 



Sp. 1. rubellum = Pyrrhosoma tenellum. Figure poorly coloured 

 (pi. xxix. f. 4). 



2. xanthopterum = perhaps hclmura pnmilio, the orange var. 



mirantiaca. 



3. elegans = Ischnura elegans. 



4. ezonatum = perhaps Ischnura elegans, but description does 



not point clearly to it. 



5. Puella = Agrion pidchellitm, from the definite description of 



the shape of the spot on segment 2. 



6. furcatiun = Agrion puella for the same reason as for pre- 



ceding species. 



7. hastulatum = Enallagma cyathigerum no doubt ; but the 



description of segment 2 is not quite satisfactory. 



8. annulare = Agrion puella ? . 



9. rufescens == seems to be the orange variety of Ischnura 



elegans, only that Stephens gives two sexes, and the var. 

 only occurs in the female. 



10. minium = Pyrrhosoma nymphula. 



11. fulvipes = Pyrrhosoma nymphula, $ ; the varietal form 



mentioned after the description seems to be Pyrrhosoiim 

 tenellum, $ . 



