NOTES ON THE ODONATA FROM EAST AFRICA, COLLECTED 

 BY THE CHANLER EXPEDITION. 



By Philip P. Calvert. 



The National Museum, through Dr. Riley, has sent to me for study 

 and identification the Odonata collected by Mr. AV. A. Chanler's expe- 

 dition to East Africa in 1892-93. All of the specimens meutioned 

 below, 19 in number, are from the Tana River. They represent seven 

 species, all well known to occur in Africa. Bibliographical references, 

 in addition to those here cited, may be found in Mr. Kirby's Catalogue 

 of the Odonata (London, 1890). 



UROTHEMIS EDWARDSII, Selys. 



Libellula edwardsii, Selys, Explor. Alger. ZooL, III, p. 124, N<^vr., pi. 2, figs. 5, 5a, 



(1849). 

 Uroihemis edivardsii, Selys, C. R. Ent. Belg., XXI, p. Ixv (1878). — Calvert, 



Proc. U. S. Nat. Mus., XVI, 1893, p. 585, fig. 11. 



One male (abdomen, 20 mm.; hind wing, 34.5) agrees with my figure 

 (of the genitalia) above cited. The coloring of the hind wings ditters 

 but slightly from that described for the three males from Congo in 

 the same paper ', viz, that the blackish-brown basal streaks in the sub- 

 costal and half of the costal space reaches to the first antecubital. This 

 description quoted speaks of the basal spot on the hind wings as " not 

 reaching the anal border;" "hind" should be substituted for "anal." 



A second male (abdomen, 24.5 mm.; hind wing, 34) agrees with the 

 fourth male from Congo, described, in the same paper by myself. I still 

 think it possible that Libellula sanpuhiea, Rambur (not Burnieister), 

 may be the younger male of the same species as ed/cardsii. 



A female (heail, thorax, and first four abdominal segmeiits=21 mm. 

 long, hind wing 32.5), last six abdominal segments wanting; apparently 

 belongs to the same species as the last-mentioned male: i:i general it 

 agrees with Ram bur's description of his signata, but signata is there 

 stated to have a wing expanse of 8 cm. and to be 5 cm. long. 



' Calvert, Proc. U. S. Nat. Mus., XVI, 1893, p. 585. 

 Proceedings of the United States National Museum, Vol. XVIII— No. 1U47. 



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