290 Mr. IT. Caiiipion on 



XXXVII. — Notes on a small Collection of Odonata from 

 Argentina. By Herbert Campion. 



Mr. Harold E. Box has been good enough to place in my 

 liands such Dragouflies as he found opportunity for collect- 

 ing during his recent visit to the Argentine Republic. The 

 bulk of the material has been presented to the British 

 Museum (Natural History). 



The earliest and the latest of the captures were made 

 upon two islands in the delta of the Rio Parana — namely, 

 Isla Ella (Arroyo Largo) and Isla ''Los Cisnes " (about 

 25 miles N.E. of Buenos Aires). The remaining specimens 

 were taken at four localities on the eastern slopes of the 

 Andes, in the Territory of Chubut, Patagonia, The 

 majority of them came from Lago Epuyen (1000 ft.), in 

 the extreme north-western corner of the Territory. The 

 main river issuing from this lake crosses Chile in confluence 

 with the Rio Puelo, and enters the Pacific Ocean at Relon- 

 cavi Bay. Fofocahuel (1800 ft.) atid the Estancia Maiten 

 (2000 ft.), two of the localities at which other Dragonflies 

 were taken, are situated ten leagues apart on the Upper 

 (Jlmbut River, east of Lago Epuyen. Finally, the Estancia 

 Tecka (3000 ft.), where Acanthagrion interruptum, Selya, 

 was met with, is well to the south of the other Patagonian 

 localities, and stands on the Rio Tecka, a southern tributary 

 of the Upper Chubut. 



For two reasons the specimens before us prove to be of 

 much interest. In the first place, according to a recent 

 catalogue of the Dragonflies of Argentina (Ris, Mem. Soc. 

 Ent. Belg. xxii. pp. 94—97, 1913), nothing whatever is 

 known as to the Odonate-fauna of this region of Patagonia. 

 In the second place, the collection includes single specimens 

 of Gomphomacromia paradoxa, Brauer, and Somatochlora 

 villosa, IJamb., both belonging to the Corduliinae, a sub- 

 family of which no members have been recorded hitherto 

 from Agentina. 



The study of ]\Ir. Box's collection has been much facili- 

 tated by the kindness of Mr. K. J. Morton, who lent me 

 some vahiable material of Erythrodiplax, and Dr. F. Ris, 

 who confirmed the identification of Ischnura Jluviatilis, 

 Selys. 



