1920.] NATURAL SCIENCES OF PHILADELPHIA. 233 



to the apex; oblique rami in the marginal field nine in number, oc- 

 casionally bifurcate; hyaline areolae of the proximal section of the 

 discoidal and anal areas relatively -few in number, not markedlj^ 

 conspicuous. Wings surpassing the apices of the tegmina by about 

 one-third of the pronotal length, the exposed portion of the wings 

 distinctly and regularly acute, the proximal width of the exposed 

 portion contained one and one-third times in the length of the same 

 section, the structure of the exposed area coriaceous; wing in gen- 

 eral relatively long and narrow, its greatest width contained about 

 twice in the total wing length. Abdomen incomplete. 



Cephalic coxae about five-eighths as long as the pronotum, in sec- 

 tion compressed triquetrous, dorsal (cephalic) margin with moderate 

 spines, which are biseriate in length and somewhat irregular in dis- 

 position; cephalic femora equal to two-thirds of the prono- 

 tum, slender, little compressed; discoidal spines four in number; 

 external margin with four large spines and a microscopic point on the 

 genicular lobe; internal maigin with fifteen spines, which are biseri- 

 ately arranged for length as follows (reading proximad), liilililililili: 

 cephalic tibiae (exclusive of apical claw) slightly less than half as 

 long as the cephalic femora, subcompressed, the claw heavy, ex- 

 ternal margin with eleven spines, which increase in length distacl 

 and proximad of which is a brief diastema, internal margin with 

 sixteen to seventeen spines, which increase in length distacl: cephalic 

 metatarsi slightly shorter than the tibiae, faintly longer than the 

 remaining tarsal joints. Median and caudal limVis elongate, moder- 

 ately slender; median femora slightly longer than the cephalic coxae; 

 caudal femora subequal in length to the shaft of the pronotum, 

 caudal tibiae subequal in length to the femora; caudal metatarsi 

 shghtly shorter than the collar of the pronotum, the remaining tarsal 

 joints faintly shorter than the metatarsus. 



Allotype. — cf ; same data as type. [United States National 

 Museum.] 



Differing from the description of the type in the following features. 

 Size smaller; form more slender, as usual in males of this genus. Head 

 with greatest Avidth across eyes over two and one-half times that 

 across the expansion of the pronotum, the form of the head more 

 depressed, the greatest depth contained one and three-fourths times 

 in the width across the eyes; occipital line more broadly transverse, 

 hardly rounding to the eyes; ocelU large, closely placed in a triangle; 

 facial shield strongly transverse, its greatest depth contained three 

 times in the greatest width of the shield, the dorsal line of the plate 



