F. W. Edwards y R. C. Shannon 66l 



RESUME 



Bref rapport d'une expedition entomologique au NO. de la Patagonie. Les 

 collections ont été faites dans la Cordillére, dans les deux versants, argentin et 

 chillen. On a capturé des insectes de tour les ordres spécialcmcnt des Diptér'es. 

 Ceux-ci représentent 53 familles, c'est á diré presque toutes les famillcs connues. 

 La plupart des genres de Nematocera collectionnés on ks a trouvé seulement en 

 Tasmanie, Nouvelle Zelande et Australie. A la fin de l'articlc on donnc le :iom 

 des insectes cosmopolites. 



SUMMARY 



A brief account is given of an entomological expedition to Northwest Pata- 

 gonia, collections being made on both the Argentine and Chilean sides. All orders 

 were collected but the Díptera in particular were investigated. Representatives of 

 53 familias of this order were collected, which includes practically all of the 

 known families of the world. Many of the genera of Nematocera are found 

 elsewhere only in New Zealand, Tasmania and Australia. A list of cosmopolitan 

 species of insects ocurring in the región is append';d. 



