A BRIEF ACCOUNT OF THE GENERA AND SPECIES 

 OF LOCUSTS OR GRASSHOPPERS OF ARGEN- 

 TINA, TOGETHER WITH DESCRIP- 

 TIONS OF NEW FORMS. 



Incidentlaly while studying- the migratory locust of Ar- 

 gentina, the writer made notes on a number of the various 

 other species of locusts found in the Republic that came 

 under his observation. He also had collections of these in- 

 scets made in several portions of the country. Additional 

 material was likewise obtained from Dr. Hugo Stempelmann 

 of Rosario, - Sante Fe, Federico Schulz, of Cordoba, and 

 Masters Oliver and William Thomas of Carcarana, F. C. C. 

 A., thereby bringing together a sufticient number of forms 

 to at least indicate, in a general way, what sort of a locust 

 fauna occurs here. The results were so satisfactory that 

 about a month before leaving Argentina for the United 

 States the writer conceived the idea of preparing* a paper on 

 the "locusts of Argentina" which should, so far as possible, 

 contain a mention of all the described species found in the 

 country, along with descriptions of any possible new forms 

 that might be brought together for such a purpose. Efforts 

 were therefore made to secure the material contained in both 

 the National and La Plata museums for study so as to make 

 this paper as nearly complete as possible. This last mentioned 

 project failed, hence the species represented in these two 

 collections are not recorded here, although several rare and 

 perhaps additional new forms are known to be represented. 



The present paper has been suggested chiefly on acco unt 

 of the number of other species of these insects that have 

 heretofore shown a tendency to increase to such abnormal 



