684 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxx. 



.slij^htly advanced upon the occiput, the hind margin o])tusangiilato, 

 tlic apex broadh' rounded. Tegmina rather narrow, tapering, about 

 equaling (female) or a little surpassing (male) the tip of the abdomen. 

 Hind femoi'a only moderatel}' robust, just reaching the tip of the male 

 abdomen, ])ut not (piite that of the female. Hind tibia? normally pro- 

 vided with eight spines in outer row. Space between the meso- 

 sternal lobes about as long as broad, possibly a trifle broader than long 

 in the female. Prosternal spine pyramidal, about as long as extreme 

 ))asal width, the apex acuminate. Male cerci slender, tapering, and 

 curved slightly dow^iward toward the tip. Last ventral segment 

 short, its upper edges straight and meeting behind in an acute angle. 



General color above brownish testaceous, below paler, more or less 

 conspersed with brown and black. The usual piceous band extending 

 from the hind edge of eyes along the upper half of sides of pronotum to 

 last transverse sulcus, somewhat interrupted in the female; below this 

 the sides of pronotum and cheeks are pale testaceous, as are also ol)lique 

 bands on ])oth the meso- and metapleura. Antennse pale ferruginous. 

 Pronotum above and tegmina inconspicuously conspersed with brown, 

 the latter with a discal row of rather well-defined fuscous spots, the 

 apical half membranous and semipellucid. Hind femora decidedly 

 banded with fuscous externally and above; internal W and below with 

 black and pale testaceous; hind tibiie more or less testaceous and 

 dusk}', w^ith a pale basal annulus. The three basal abdominal seg- 

 ments largely black. 



Length of body, male, 21 ; female, 2.5; of antenna^, male and female. 

 10; of pronotum, male, 4.6; female, 0; of tegmina, male, 15. ,5; female, 

 17.25; of hind femora, male 11; female, 14 nun. 



%v.— Cat. No. 9745 U.S.N.M. 



Il(0>itaf. — Sapucay, Paraguay, February, collected b}' W. T. Foster. 

 Male and female specimens. 



LEIOTETTIX, new genus. 



Related to ])oth Dichrophi-s and Scotussa^ but ditiering from the 

 former in the more cylindrical pronotum with its comijarativel}' 

 shorter hind lobe and in the more ampliate fastigium of th(> vertex; 

 and from th(> latter in having the valves of the ovipositor normal 

 instead of straight, and the cerci obliquely docked instead of bioadly 

 s})atulate. The representatives of the genus are small or medium 

 sized. 



Body with the surface glabrous, hirsute. Head large, f ulh^ as wide 

 as or even a little broader than the front (nlge of the pronotum. 

 Eyes a trifle prominent, about as long (female) or somewhat longer 

 (male) than the cheeks below them, separated above by a space equal 

 to the o-ivatest width of the frontal costa in the male and a \ erv little 



