LIST OF PARA G UA YAN LOCUSTS—BR VNER. 673 



last-named genus by having the hind femora slenderer apically, the 

 vertex between the eyes narrower, and the hind lobe of the pronotuni 

 longer and more ampliate, as well as angulate instead of l)roadly 

 rounded. 



In his diagnosis of the genus Jodacrlx" it is evident that the author 

 had ])efore him specimens of two distinct genera — a male of his ferru- 

 (j!nta and a female of the Jodacrls (?) nebalosa Bruner.'' This genus 

 is widel}^ distributed over tropical America and contains several 

 species. These inconspicuously colored insects live in forests, where 

 they occur among fallen leaves and on the stems of plants. Three 

 species are known to abound in Paraguay. The}^ may be separated 

 by the subjoined synoptic table. 



This last-named insect may be considered the type of Oinalotettix. 



TABLE FOR DETERMINATION OF SPECIES. 



(I. Paler, testaceous to bruuneo-testaceous. Outer lower edge of hind femora largely 

 l)lack, the sides of pronotum usually provided with a jiiceous band which is 

 bordered above and below by one of paler hue. 

 h. Larger (male, 17; female, 21 mm.). Hind femora with two dusky bands across 



the upper edge, the outer face plain nebulo^a Bruner 



hb. Smaller (male, 14; female, 19 mm. ). Hind femora provided on outer face with 



a conspicuous black patch signatipes, new species 



aa. Darker, wood-brown to brunneo-ferruginous. Outer lower edge of hind femora 

 without the black color. Sides of pronotum unicolorous. 



amdeipennis Bruner 



OMALOTETTIX NEBULOSA Bruner. 



Jodacris (?) nehulosa Brunek, Locusts of Argentina, 1900, ji. 67. 



Hahitat. — Sapucay, Paraguay, -t males and 12 females (W. T. 

 Foster); Tucuman, Argentina, and Victoria, Brazil (L. Bruner). 



As mentioned above, this insect was confounded with Jodacris f err a- 

 ginea by Giglio-Tos when he drew up his diagnosis of the genus. He 

 also credits it to Paraguay. 



OMALOTETTIX SIGNATIPES, new species. 



Very similar to the })receding, from which it differs in the points 

 indicated in the synoptic table of species given above. It also differs 

 from nehidosa in having a slightly shorter and broader fastigium of 

 the vertex, a slightly less prominent frontal costa between the base of 

 the antenna^ and a little shorter hind lobe of the pronotum, which is 

 less decidedly angulate. 



Length of body, males, 14; females, 19; of pronotum, males, 3; 

 females, -t; of tegmina, males, 13; females, 18; of hind femora, males, 

 8.5; females, 12 mm, 



Type.—Q2it. No, 9741, U,S.N.M. 



«Bo11. Mus. Zool. Anat. Torino, 1897, No. 802, pp. 32-33. 

 b Locusts of Argentina, 1900, p. 67. 

 Proc. N. M. vol. XXX— 06 43 



