1901.] NATURAL SCIENCES OF PHrLADELPHIA. 277 



Apparently approaching E. arabica Saussure, but differing in 

 numerous details; with E. aristides Lucas, from Suez, the rela- 

 tionship is also close, but that species is described as wingless. 



The specimens (or at least one of them) were collected in the 

 same character of country frequented by the other species of the 

 genus — barren and waterless plains or absolute deserts. 



Size medium. Head, with eyes, wider than deep (excluding 

 the clypeus), anterior border viewed superiorly truncate; antennae 

 slender. Pronotum sparsely tuberculate, broader anteriorly than 

 long, posteriorly converging; anterior border with a broad, low 

 central convexity which is perceptibly impressed in the median 

 section, ihe margin free; angles rect-acute augulate; posterior 

 border apparently truncate." Tegmina as in E. arabica, except 

 that the main veins ramify and become lost in the reticulations of 

 ihe posterior portion of the tegmina. Wings well developed, 

 extending to the tips of the tegmina. A.bd'>men with the supra- 

 anal plate transverse, subsinuate centrally; subgenital plate rather 

 elongate, the apex broadly rounded. Limljs sparsely tuberculate, 

 the tubercles sometimes arranged in regular series. Anterior 

 tibise with four rather blunt spines on the external margin. Me- 

 dian and posterior femora each with a row of blunt teeth along 

 the posterior margin, the distal extremities bearing a moderate- 

 sized spine. Posterior tibise slightly longer than the femora. 



General color ranging from purplish brown on the head and 

 pronotum to clay yellow on the abdomen. Eyes, labrum and 

 lower part of clypeus ferruginous. Exposed surface of tegmina 

 pale clay yellow becoming dull reddish centrally; lower surface 

 with a liar of blackish purple. Limbs and lateral borders of 

 pronotum pale yellowish pink, in one specimen (The Hand, July 

 13, 1894) the tibiae are obscurely ringed with whitish, in the 

 other (unknown locality and date) the temora are decidedly clay 

 yellow at the bases. 



MeasuremenU. Q (The Haud. 7-13, '94.) 9 (?) 



Total length, 16.5 mm., 18 mm. 



Length of pronotum 3 " 3 " 



Anterior width of pronotum, ... 5 " 4.75" 



Length of tegmina, 7 " 7.50 " 



Width of abdomen, 7 " 6.75 " 



Length of hind femora, 9.25 " 9.50 " 



- This portioa was somewhat damaged in both specimens by the iasertiou 

 of the piu. 



