(530 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxx. 



SINIPTA Stal. 



SINIPTA DALMANI StSl. 



Plate XXXVI, fig. 3. 



Gomphocerus (Sinipta) dalmani StAl, Freg. Eug. Resa, Ins. Orthopt., 1860, 



p. 340. 

 Sinipta dalmani fiT^L, Recens. Orthopt., I, 1873, p. 103. 



Habitat. — The collections made bj' W. T. Foster at SapucaA", Para- 

 guay, contain examples of this insect. Stal's type came from Uruguay, 

 and numerous examples were taken by the writer in middle and north- 

 ern Argentina, where it is a very common insect on the open pampas. 



AMBLYTROPIDIA Stal. 



This genus contains a rather large number of species, taking the 

 two Americas together. They are most abundant in the Tropics, how- 

 ever, where the species are distributed in savannas or grassy openings 

 in the forests. The species so far recognized may be separated by the 

 subjoined table: 



TABLE FOR DETERMINATION OF SPECIES. 



It. Median carina of vertex quite prominent. Last transverse sulcus of pronotum 

 situated plainly behind the middle. 

 h. Quite robust, for most part pale colored, the tegminaof female not or y>ut little 

 surpassing the tip of the abdomen. The latter concolorous above. 

 c. Antennfe of female, those of the male always more elongate, a trifle longer 

 than the head and pronotum combined. ' Tegmina provided with fuscous 

 spots. 



d. Smaller. Brazil .ferruginosa Stal 



dd. Larger. Central America (Guatemala). Hind tibi;e with 13 spines in 



outer row magna Bruner 



cc. Antennte of female plainly shorter than the head and pronotum combined. 

 Tegmina variable. 

 d. Tegmina pale testaceous, without fuscous spots or longitudinal pale 



strijies ani^t rails Bruner 



dd. Tegmina mottled, or with both fuscous spots and longitudinal pale 

 stripes. Often largely green. 

 e. Smaller. Tegmina often with a sub-costal pale line, or the dorsum with 

 lateral green stripes reaching from the eyes to middle of the tegmina. 



The latter as long as abdomen .viitata Giglio-Tos 



ee. Larger. Tegmina without the sub-costal pale line; the dorsum either 

 wholly green or ferruginous. Tegmina shorter than the abdomen. 



robusta, new species 



/'//. More slender, rather dark colored. Tegmina of female always surpassing the 



tip of abdomen. Abdomen of male at least bright ferruginous or orange 



above. 



c. Color quite uniform dusky brown, the females with distinctly flecked tegmina. 



d. Hind tibia; 12-13 spined in outer row. British Guiana and Trinidad 



I>*land trinitatis Bruner 



c/(/. Hind tibiae 15-16 spined in outer row. West coast of Central Mexico. 



elongata Bruner 



