382 CURRIE 



mens of ySschna and one Tramea mentioned without specific 

 determination. 



3. A revision of the subfamily Libellulinae, with descriptions 

 of new genera and species. By W. F. Kirby. * * * Trans. 

 Zool. Soc. London, XII, p. 315, PI. LI, fig. i, August, 1889. 

 Tramea darwini^ new species, described. 



It will therefore be seen that the collection here reported upon 

 is the most complete thus far made upon these islands. 



Family AGRIONID^. 



I. ANOMALAGRION HASTATUM (Say). 



Agrion hastata Say, Journ. Ac. Phila., viii, p. 38, 1839. 



Agrion hastatmn Hagen, Syn. Neur. N. Am., p. 'j'j , 1861. 



Anomalagrion hastatum Selys, Bull. Acad. Belg. (2), xli, p. 255, 1876. — 

 Kirby, Synonymic Cat., p. 140, 1890. — Calvert, Trans. Am. Ent. 

 Soc, XX, p. 240, 1893. — Kellicott, Bull. Ohio State Univ. (4). No. 5, 

 p. 49, March, 1899. — Williamson, 24th Ann. Rep. Dept. Geol. and 

 Natural Resources, Ind., 1899, Blatchley, Indianapolis, p. 280, 1900. 



Three males and three black females, Albemarle Island, February 14 

 (Nos. 47-52, inclusive). At first I regarded the females as belonging 

 to some species of Ischnura^ but their resemblance to the males, in 

 size and general appearance, led me to compare them with the sup- 

 posed black females of A. hastatum contained in the National Mu- 

 seum collection and also with the females of IscJmiira verticalis Say. 

 This comparison resulted in revealing a difference in the form of the 

 median lobe of the prothoracic hind margin. In Anomalagrion this 

 is obtusely rounded, flattened, and slightly emarginate or grooved in 

 the middle. In the specimens of Isckfiura the lobe is rounded, but 

 more acutely, not flattened nor emarginate medially. The emargina- 

 tion of A. hastatutn seems to be slightly more pronounced in the 

 Galapagos specimens than in those from Washington, D. C, and 

 other localities in the eastern United States. 



Distribution. — North America, Cuba, Venezuela, Galapagos Is- 

 lands. 



Family iESCHNID^. 



2. ^SCHNA GALAFAGOENSIS sp. nov. 



Male. — Face pale blue or green, the f ronto-nasal suture black ; 



frons with a line separating it from the eyes, and a T-spot above, 



black, stem of T narrowing anteriorly : clypeus twice as broad as 



long; labrum pale green or blue, a transverse black line on its basal 



