632 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxx. 



(female), or a little longer (male) than the combined length of head and 

 thorax. Pronotum a little expanding- posteriorly, the lateral carina? 

 prominent, rather coarsely punctate, most profusely so on the hind 

 lobe; transverse sulci faint, the posterior one only severing the median 

 carina, situated plainly ])ack of middle. Tegmina without a definite 

 intcrcahuy vein, a little surpassing (male) but falling considerably 

 short of the tip of the abdomen (female). Hind femora long and 

 robust, surpassing the abdomen in ])oth sexes. Hind tibiw with lH-14 

 spines in outer row. 



General color var^-ing from a nearly uniform pale testaceous with an 

 oHvaceous tinge on sides of pronotum and pleura in the males to a deep 

 brown varied with green on dorsum in females. Face usually paler 

 than other portions of head; the usual dusky band back of eyes and 

 along the upper edge of sides of pronotum. Tegmina immaculate in 

 the males, in the females provided with a discal row of fuscous dots, 

 sometimes the balance of the mem))er also more or less regularly but 

 dimly conspersed. Sides of the three basal abdominal segments 

 largely black in the female, pale in male. Hind femora with th< ir 

 inner face and lower sulcus reddish purple (female) or orange (male). 

 Antenna? infuscated apically. 



Length of body, male, 20, female, 33; of pronotum, male. 4, female, 

 6; of tegmina, male, IT, female, 21: of hind femora, male, 14, female, 

 21.5 mm. 



Type.— Cvii. No. 9717, U.S.N.M. 



Hahltat. — Sapucay, Paraguay, W. T. Foster, collector; several spec- 

 imens of both sexes. 



DICHROATETTIX Bruner. 

 DICHROATETTIX VIRIDIFRONS Bruner? 

 Plate XXXVI, figs. 5, 6. 

 ])ichroate(tix riridifroii!^ Bkuner, Lofunts of Argent., \k IV.], 1900, figs. 9 ami 10. 

 While no .specimens of this species are at hand, it is barely possible 

 that it may occur in Paraguay as well as in Argentina. 



DICHROATETTIX BOHLSII ( Giglio-Tos). 

 Fenestra bohltii i Gmhio-Tos, Zoul. Jalirli., VIII, ji. S07. 

 JIal)itat. — Paraguay (Giglio-Tos); Sapucay, Paraguay (W. T. Fo.s- 

 ter), several specimens of both .sexes. 



This insect is rather larger and more robust than the preceding, 

 from which it differs in these respects, and in having the wings less 

 clouded on the anterior field and apical half. 



AMBLYSCAPHEUS, new genus. 



Related to >^t<(i(r<>rJicctii>< Giglio-Tos, but ditfei'ing from that genus 

 in the entire absence of lateral carina- on the pronotum. 



