16 



GENUS PARATETTIX, BOLIVAR. 



TABLE FOR SEPARATION OF SPECIES. 



A. First and third joints of hind tai'si of eqnal length Carina' of the 

 femora entire. peruviaiius Bol. 



AA. First joint of hind tarsi longer than the third. Carinii' of the 

 femora undulate, 

 b. Carina' of anterior femora undulate. Pronotum generally shorter 

 than tip of hind femora. Pronotum with carina on anterior por- 

 tion rather high. Borellii (Tiglio-Tos. 

 bb. Carina' of anterior femora leaf-like. Pronotum greatly surpass- 

 ing tip of hind femora. ciieiiiiclotiis Burm. 



P. penivkiims Bol. This locust has been taken at San Lor- 

 enzo, m the province of Jujuy. (Gi^lio-Tos.) 



P. oiemidotus Burmy Giglio-Tos also rej^orts that a speci- 

 men from the same locality has been referred with doubt to 

 this species. 



P. Borellii Giglio-Tos. This insect has been collected in a 

 number of localities, as San Lorenzo, Jujuy, Tucuman. Cruz 

 del Eje, Cordoba, Carcarana, Rosario, and Buenos Aires. It 

 is evidently the most abundant species found in the Rejiublic, 

 and occurs in two forms as reagrds pronotum length. It 

 can at once be recognized by the rather prominent tubercles 

 on the outer face of the hind femora which, when observed 

 from above, project considerably beyond the other portions 

 of these legs. 



Giglio-Tos, in his report on the Orthoptera of the 

 "Viaggio del dott. Alfredo Borelli nella Republica Argentina 

 e nel Paraguay", referred a single specimen of this insect 

 with much doubt to ParatetUx tolfecus Sauss. (Bolletino dei 

 Musei di Zoologia ed Anatomia comparata della R. Univer- 

 sita di Torino, Vol. IX, No. 184, p. 5.) but in a later paper 

 has described it under the above mentioned name. 



GENUS TETTIGIDEA, SCUDDER. 



TABLE FOR SEPARATION OF SPECIES 



A. Body obese, the ])ronotum extending but little if any Ixiyond tip of 



hind femora. ' nuilticostata Bol. 



A. v. Body graceful, the pronotum greatly surpassing the tip of hind 



femora. j»-va<'ilis Brunei-. 



