L22 Annals of the Carnegie Museum. 



Antennae moderately heavy, filiform, in the female about equal to. 

 in the male a little longer than, the head and pronotum combined, 

 frontal costa most prominent above the ocellus, where it is plane, 

 fully twice the width of the vertex between the eyes, and rather 

 coarsely punctulate, at the ocellus sulcate, below less prominent, also 

 punctulate. Facial carina? moderately prominent, the interspace of 

 fnmi | timet ate. Pronotum rugoso-punctate, most closely on the hind 

 lobe, divergent posteriorly; median carina well developed throughout, 

 except that it is severed by all three of the transverse sulci, the last 

 being most profound; hind margin angulately emarginate at middle, 

 the front somewhat sinuate Tegmina minute, lateral, about half 

 as wide as long, in the female reaching half way across the metanotum, 

 in the male extending to the anterior edge of the first abdominal seg- 

 ment. Auditory apparatus obsolete. Apex of male abdomen gentlv 

 enlarged and upturned; supra-anal plate large, subquadrate, the sides 

 raised, the middle tumid, deeply and narrowly sulcate, terminating 

 in a finger-like projection beyond the apex. Hind margin of preceding 

 segment provided at middle with two slender parallel finger-like pro- 

 jections, which lie in the basal part of the sulcation of the supra-anal 

 plate. Cerci large, quite similar to those of volxemi Stal. 



General color brownish olive, becoming piceous on occiput, cheeks, 

 the upper portion of lateral lobes of pronotum, and pleura. Front, 

 legs, and underside, pallid. A conspicuous patch on cheeks back of 

 lower edge of eyes, lower edges of pronotum and blotches on pleura 

 in advance of the insertion of middle and hind femora, sordid white 

 or ivory. Hind femora o'ivaceous, with more or less of a yellowish 

 tinge, the genicular portion pale ferruginous; hind tibiae glaucous. 



Length of body, d 71 , 15 mm., 9 , 23 mm.; of pronotum, cf , 3.15 mm., 

 9, 4 mm.; of tegmina, o 71 and 9, 1.25 mm.; of hind femora, o 71 , 10 

 mm., 9 , 12 mm. 



Habitat. — Para and Rio de Janeiro, Brazil, September to November, 

 several specimens of both sexes (H. H. Smith). Collection of the 

 Carnegie Museum. 



169. Sitalces nudus Bruner. 



Sitalces nudus Bruner, MS. Biol. Cent.-Amer., Orthopt., II, p. 291; ib., Horae Soc. 

 Em. Rossicae, XXXIX, p. 486 (1910). 



The present species, of which three specimens are at hand, is rather 

 closely related to the S. ■infuscutiis, a description of which immediately 



