100 Annals of the Carnegie Museum. 



lobes which occupy the middle third, the outer or apical lobe being twice 

 as prominent as the basal one. The first joint of the posterior tarsi is 

 distinctly longer than the third. The general color of the present series 

 is dark fusco-ferruginous, with the apical joints of the antennae testaceous. 



Length of body, &, 7.5 mm., 9, 8 mm.; of pronotum, cf and 9, 7-55 

 mm.; of hind femora, cf, 4.5 mm., 9,4.85mm.; length to tip of pronotum, 

 d^, 8.5 mm., 9, 8 mm. 



Habitat. — One male and one female, Para, Brazil, taken in August by 

 H. H. Smith. The collection also contains what is apparently a nymph 

 of this same species from Benevides, Brazil, collected in July. Collection 

 Carnegie Museum, Pittsburgh. 



The dorsum of the pronotum back of the humeral gibbosity is rounded 

 in the female but flattened in the male. 



Platytettix unifonnis sp. nov. 



Considerably smaller than the preceding species and P. reticulatus 

 Hancock, from both of which it differs in the non- or less strongly reticulate 

 and less gibbous pronotum, and in having the lower posterior angles of 

 the pronotum roundly angulate instead of acute. The carinas of the 

 anterior and middle femora, while prominent, are not undulate above and 

 scarcely lobate below, but notched so as to produce an acute tooth in 

 advance of the apex. Head small, the eyes separated above by a space 

 greater than the diameter of one of them. The vertex is slightly advanced 

 in front of the eyes, where the upper extremity of the frontal costa is quite 

 prominent and when viewed from above appears as an acute median 

 anteriorly projecting tooth ; the space between the eyes above is provided 

 in the middle with a continuation of the frontal costa as a longitudinal 

 carina reaching nearly or quite to the anterior edge of the pronotum. 

 The latter elevated, somewhat inflated and rounded between the humeri 

 and anterior edge, but not especially rugose, on the disk between the 

 median and humeral carinae provided on each side with a short supple- 

 mentary carina, posteriorly with several short irregular longitudinal rugae, 

 the apex broadly acuminate. Hind femora robust, the upper edge and 

 outer face comparatively smooth. 



General color dark fuscous, indistinctly mottled with paler. Hind 

 tibiae, and in fact the anterior and middle ones also, showing traces of 

 annulation. 



Length of body, cf and 9, 6 mm.; of pronotum, 6 mm.; length to tip 

 of pronotum, 7 mm.; of hind femora, 4 mm. 



