1904.] NATURAL SCIENCES OF PHILADELPHIA. 665 



Differing from either of the previously known species of the genus 

 in the unarmed margins of the cephahc process, and in the smaller 

 size. The generic diagnosis given by Bolivar will require some modi- 

 fication to include this form, as the antennse are inserted between the 

 eyes and the metatarsi of the caudal limbs are distinctly longer than 

 the third tarsal joint. 



Size rather small; form elongate; surface finely granulose. Head 

 with the cephalic process produced a distance before the eyes equal 

 to the greatest length of one of the latter, depressed dorsad, acute, the 

 apex rounded, margins entire and carinate, median carina distinct; 

 face distinctly declivent; frontal costa forked slightly cephalad of the 

 ocelli; rami slightly divergent; median ocellus inserted on a level with 

 the ventral margin of the eyes, paired ocelli placed directly between 

 the eye; eyes subtrigonal, hardly prominent; antennae short, very 

 slender, apex acute, inserted directly between the eyes and equi- 

 distant from them and the frontal costa. Pronotum slender, very 

 elongate, caudal process extending beyond the tips of the caudal 

 femora a distance about equal to their length, very slightly subu- 

 late; cephalic margin very broadly obtuse-angulate ; dorsum slightly 

 arched transversely; median and lateral carinse distinct, the inter- 

 humeral region bearing a pair of short accessory carinse placed on 

 each side of the median carina; lateral lobes with the posterior angle 

 acute, inferior sinus rectangulate, elytral sinus slight. Tegmina 

 cylindrical ovate. Wings extending sHghtly beyond the apex of the 

 caudal process of the pronotum. Cephalic and median femora with 

 their margins very slightly undulate. Caudal femora slender, margins 

 evenly curved, genicular spine distinct and acute, femoral lobe distinct, 

 external pagina with distinct but irregular diamond-shaped sculpture ; 

 tibise slightly sinuate, armed apically with distinct spines, canthi 

 minutely serrulate; metatarsi equal to the remaining tarsal joints in 

 length, the two apical pulvilli each slightly longer than the basal one. 



General color wood brown, irregular dotted and blotched along the 

 caringe with vandyke brown; face blackish brown; eyes ecru drab. 



Measurements. 



Length of body, 10.2 mm. 



Length of pronotum, 13 " 



Humeral width of pronotum, 2 " 



Length of posterior femora, 5.2 " 



A paratypic female has been studied in addition to the type. 



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