Bruner : South American Acridoidea. 73 



transverse sulci plain, the last about one-third of the distance from 

 the hind to the front margins, these latter broadlj rounded. Tegmina 

 and wings narrow, their apex acuminate and extending aboul one- 

 sixth oi their length beyond the tip of the abdomen. Hind femora 

 rather slender, about two-thirds the length of the abdomen; hind 

 tibia quite strongly expanded apically, the external edge provided 

 uiih nine to eleven spines, somewhal irregularly arranged. Proster- 

 nal spine inflated apically, strongly punctulate and hirsute, directed 

 caudad, Last ventral segment elongate, wedge-shaped, its apex 

 entire or without the lateral backwardly directed spines or teeth; 

 supra-anal plate provided with two short parallel black carina' at 

 middle of base and one wart -like projection of the same color, while 

 the hind margin of the preceding segment is also marked with four 

 of these spot>. 



( General color pale grass-green above, the underside more pallid; sides 

 of head, lower edges of sides of pronotum, and middle of pleura con- 

 spicuously marked by a rather wide stripe of white, which is bordered 

 above by piceous; eyes testaceo-ferruginous, front and antennae brown 

 with a vinaceous tinge. Dorsum of abdomen tinged with orange- 

 testaceous or ochraceous. 



Length of body, cf, 35 mm., of pronotum, 4.85 mm., of tegmina, 

 jo. 5 mm., of hind femora, 13.5 mm., of antennae, 13 mm. 



Habitat. — The type bears the label "Uacarizal, Feb." It was 

 taken by H. H. Smith, and is deposited in the Carnegie Museum. 

 Eight other specimens, 7 cfd 71 and 1 9 are referred to this species. 

 They were taken at Corumba during the month of March. 



108. Leptysma uniformis sp. now 



Very similar in size and structure to L. filiformis, but differing from 

 that insect both in color and some structural features. Quite uni- 

 formly grass-green and without the lateral longitudinal pale stripes 

 found in the majority of the species of the genus. 



Form slender, cylindrical, the head horizontal, including the 

 fastigium about one and one-half times the length of the pronotum; 

 fastigium moderately large, its sides gently convergent anteriorly, 

 the immediate apex more or less acuminate, its center strongly 

 longitudinally canaliculate; eyes large, but not prominent, in the 

 males a very little exceeding the anterior margin of the cheek in 

 length, in the female about equaling it, separated above by a space 



