1899.] NATURAL SCIENCES OF PHILADELPHIA. 233 



3. Hemianax ephippiger Burm. 



One female, Berbera, July 4, 1894. 



4. Pantala flavescens Fabr. 



One female, Sheikh Husein, October 9, 1894. 



5. Palpopleura Portia Brury. 



One male, "Smith river, Sept. 11, 1894, F. G." [= Fred. 

 Gillette ?] is nearest Portia, but the dark brown coloring on the 

 front wings does not reach the hind margin at any point, instead 

 of occupying the entire width of the wang in its basal fourth, as 

 in Drury's figure. 



6. Trithemis ardens Geistsecker. 



Gerst , Mitt. Naturh. Mus. Hamburg, ix, p. 5, 1891. 



One male. Stony brook, August 17, 1894. 



In this individual there are, on the front wings, four posttrian- 

 gular cells, then three rows to beyond the level of the nodus. 



This species was originally described from Mbusini. I possess 

 also a male from Abyssinia, given me at the Konigliche Museum 

 fur Naturkunde, which I compared w'ith the type of T. Maniois 

 Brauer ( VerJid. zoo/, bat. Gesel. Wien, xviii, p. 735, 1868, no 

 description; see also de Borre, Repertoire Alphahetique, etc., p. 2G) 

 " aus Setith.," and found the two to be identical. Dr. Karsch 

 (Berl. Ent. Zeit., xxviii, p. 24, 1893) has held ardens to be the 

 same as sanguviolenta Burm., but they are quite distinct, as may 

 be seen by comparing my descrijition (Travis. Am. Ent. Soc, xxv, 

 p. 90, 1898) of Burmeister's types with Gerstoecker's description; 

 it may be added that the supplementary sector next below the 

 subnodal is so strongly convex posteriorly that two rows of cells 

 exist between it and the subnodal sector in arden-^, instead of one 

 row as in sanguinolenta. 



Mr. Kirby suggests {Ann. Mag. Nat. Hid., 7, ii, p. 233, 1898) 

 that "T. ardens Gerstsecker is, perhaps, a form of this species 

 [i.e., T. lacustris Kirby] with blacker legs." A. comparison of 

 the original descriptions accompanying the two names shows the 

 followiuo; differences : 



