116 Annals of the Carnegie Museum. 



prominent, arcuate, their outer end reaching backward to near the upper 

 edge of the middle of the eyes. Antennae arising decidedly below the eyes; 

 the posterior ocelli between the lower edge of the eyes. Pronotum 

 lengthily subulate and reaching the tips of the wings; anterior margin 

 truncate, embracing the head nearly to the eyes; the surface granulose, 

 somewhat uneven, the median carina plain throughout, slightly elevated 

 between the humeri and again between the sulci; lateral carinae prominent 

 and arcuate in advance of the first sulcus, interrupted between the sulci, 

 prominent at the rounded humeri and beyond. Legs moderately long 

 and slender, the middle femora more than three times their greatest 

 diameter, hind pair with the outer disc rugose; hind tibiae almost destitute 

 of spines, the first and third tarsal joints about equal in length. Antennae 

 approximately 13-jointed, coarsely filiform about reaching the middle of 

 the tegmina. Latter of moderate size, oblong o\'ate. 



General color uniformly dirty, pale brown or brownish testaceous, with 

 piceous traces on sides of pronotum anteriorly. Tegmina uniformly 

 fuscous. Hind femora faintly clouded with fuscous, while the anterior 

 and middle tibiae show faint traces of dusky annulation. Tips of antennae 

 only infuscated. 



Length of body, cT, 7.5-8 mm.; of pronotum, 11. 5 mm.; to tip of wings, 

 12 mm.; of hind femora, 5.2 mm. 



Habitat.- — Three males, one from Para, in June, another from Chapada, 

 near Cuyaba, Matto Grosso, the same month, and the third from Bene- 

 vides, Brazil, taken in July. These presumably were all taken by H. H. 

 Smith. Collection Carnegie Museum, Pittsburgh. 



This insect does not quite agree with the present genus in some of its 

 characters, nor does it seem to belong in Scabrotettix, to which it appears 

 to be related also. The wide furcation of the frontal costa is unique for 

 both genera, while the angulate, outwardly turned hind margins of the 

 pronotum are not found in other species of Allotettix. 



Allotettix americanus Hancock. 

 Allotettix americanus Hancock, Trans. Ent. Soc. Lond., 1907, 234. 

 Habitat. — Cachabi, Ecuador, 



Allotettrix peruvianus Bolivar. 



Paralettix peruvianus Bolivar, Ann. Soc. Ent. Belg., XXXI, 1887, 272. 

 Allotettix peruvianus Hancock, Genera Insectorum, fasc. 48, 1906, 48, fig. 18. 



Habitat. — This species is found from Costa Rica in North America 

 through Panama into Colombia, Peru, Bolivia, and the extreme north- 



