Calopteryx. 2 1 5 



ad marginem cxteriorcm alarum .... (/3). Libellula 

 corpora ca^ruleo nitido ; alis viridi-ca^rulescentibus : apice 

 fuscis ; margine iminaculatis. Descr. AUc, qua^ etiarn 

 puncto marginali carent, nigro-c;trulescente,s : apice 

 pallide fusc;t. Cauda uiiguiculata . . . (7). Libellula 

 corpore viridi-ca;rulco ; alis subfuscis : puncto marginali 

 albo. Descr. Corpus viridi-sericeum, nitidum, minima 

 c?eruleum. Pedes nigri. Ahu subfuscas puncto marginali 

 albicante oblongo. Cauda inermis. H;ec prajcedcntibus 

 fcemina. De Geer . . . (8). Libellula corpore sericeo 

 nitido ; alis inaurato-fuscis : macula nigra. Descr. 

 Corpus c;eruleo nitidum. Pedes nigri. AUc a medio 

 versus apices ca^rulescente nigrit ; ipsis apicibus aurato- 

 fuscis ; a medio ate versus ejus basin color inauratus, 

 nullum punctum marginale in hac. (C. Linnaeus, " Fauna 

 Suecica," pp. 374-5, n. 1470, 1761). 



[LiniiKus here has made varieties of individuals of different age, 

 sex, and species, and so caused a considerable amount of confusion, 

 (a) is an immature male of C. virgo. {fi) is an adult male of the 

 same species. (7), as De Geer says, is a female of the same. 

 (5) appears to be an ailult male, C. splt'iidens.~\ 



Size. 



Length of Male, 45mm. to 47-5 mm. ; expanse of 

 wings, 56"5mm. to 62mm. Length of Female, 43mm. 

 to 46mm. ; expanse of wings, 58"5mm. to 69mm. 



Male Imago. 



Head deep metallic blue ; margins of labrum and 

 labium blackish. Eyes rudd}', small, globular, distant. 

 Protliorax small, blue. Thorax blue, sometimes wath a 

 greenish tinge ; projections at insertion of wings, and 

 between them yellowish. Legs long, slender, black. 



