70 



a little distance parallel, then rounding to tlie somewhat pointed apex; 

 margins raised, subacute; on the inner surface two short minute carinse. 

 Face somewhat oblique, curved inward opposite the lower margin of the 

 eyes ; frontal costa prominent and projecting above the ocellus, deeply 

 sulcate throughout, forming two carina, subparallel, except at the ocellus, 

 where they suddenly approximate each other; lateral carinae distinct, 

 subparallel. 



Antennae rather short, scarcely reaching the tipof the j)ronotum, ensi- 

 form, and subtriquetrous. The eyes are somewhat inflated, but less so 

 than in the male. Pronotum with the sides parallel except near the 

 X)Osterior extremity, where they are slightly divergent, granulose, and 

 somewhat rugose; median carinaslight; lateral carinte indistinct, almost 

 obliterated; posterior transverse sulcus subdistiuct, situate behind the 

 middle; posterior extremity obtusely rounded. Elytra a little longer 

 than the abdomen; wings about the same length. The posterior femora 

 do not reach the extremity of the abdomen; legs pilose; there is very 

 little difference in the length of the outer and inner rows of the spines 

 of the posterior tibiae. 



Color. — General color brown, with dim fuscous dots. Inside of the 

 posterior femora bright coral-red; posterior tibiae red; spines tipped 

 with black. 



Male. — Similar to the female except as follows : It is smaller. Eyes 

 large, much inflated, and approximate above ; antennae sleuder and 

 but slightly enlarged at the base; occiput and disk of the pronotum 

 occupied by a broad, double, dull-yellow stripe; a broad stripe of the 

 same color along the lower part of the sides of the prouotum; posterior 

 femora indistinctly trifasciate with fuscous; face a little more oblique. 



Dimensions. — 9 , Length, 0.94 inch; elytra, O.Gl inch; posterior femora, 

 0.45 inch ; posterior tibiae, 0.39 inch. $ , Length, O.GI inch; elj' tra, 0.56 

 inch. 



Uemarli. — This species belongs to the second division of this genus as 

 given by Saussure, and agrees with the second division of Xiplikera as 

 given by Serville, except that the cerci are short and not curved. 



Specimens were received of Mr. Scudder; they were collected by Sumi- 

 chrast in Mexico. 



I have given the description in full, as that of Saussure is so brief as 

 to render it dif&cult to determine specimens not in color. 



Machcerocera sumichrastl, sp. nov. 



Yertex slightly deflexed, broadly channeled; the channel apparently 

 connecting with the narrow sulcus of the frofttal costa ; portion in front 

 of the eyes about equal in length to that behind them, ovate-lanceolate 

 in form ; margins elevated, acute. Face moderately oblique, indented 

 opposite the lower margin of the eyes, resembling Xiphoeera in this 

 respect ; quadricarinate, the median pair close together above, regu- 

 larly diverging below, reaching the clypeus; lateral carinae distinct, 

 diverging to the corners of the face. Eyes prominent, slightly inflated, 

 ovoid. Antennae elongate, reaching beyond the tip of tt e pronotum, 

 slender, somewhat ensiform, flattened. Pronotum somewhat compressed 

 on the sides, which are nearly parallel, divergiug slightly at the posterior 

 extremity ; disk slightly arched transversely ; median carina distinct, 

 but not elevated ; lateral carinae obtuse and irregular on the front lobes 

 in the form of obtuse ridges, converging posteriorly and becoming obso- 

 lete at the posterior sulcus, while on the i)osterior lobe, as they extend 

 forward, they descend obliquely upon the sides as obtuse ridges, thus 



