630 PROCEEDINGS OF THE ACADEMY OF [Oct., 



tension of the preocular portion of the head (thus producing an 

 extended frontal cost a and triangularly acuminate fastigium), and 

 in the lesser development of the mediastine and scapular area of 

 the tegmina. No relationship exists with P. fasciatus Brunner/ 

 which approaches Duronia in possessing partial lateral caringe. 



6". — Head with the vertex tumid, a slight longitudinal sulcus 

 being presenl ; fastigium considerably produced, excavated, apex 

 narrowly truncate, the lateral carinse well marked, only a trace 

 being visible of the median carina; frontal costa constricted below 

 the ocellus, strongly expanded veutrad, sulcate throughout the 

 entire length, punctate in the dorsal portion ; eyes rather promi- 

 nent, ovate; antennae slightly depressed, twice as long as the head 

 and pronotum. Pronotum subcylindrical, cephalic border sub- 

 truncate, caudal rotundate, median carina distinct, cut about the 

 middle by the transverse sulcus; lateral lobes equally long as 

 broad, the ventral margin deeply sinuate cephalad. Tegmina 

 rather elongate, extending a considerable distance beyond both the 

 abdominal apex and the hind femora; mediastine and scapular 

 areas elongate, not dilated. Mesosternal lobes separated by an 

 interspace much longer than broad ; metasternal lobes almost con- 

 fluent. Subgenital plate acuminate, possessing a distinct keel on 

 the dorsal surface. Posterior femora slender, genicular lobes 

 rotund-angulate; tibise not equaling the femora, bearing twelve 

 spines on the external margin, ten to eleven spines on the internal 

 margins. 



?. — Head with the fastigium rather broad, obtuse-augulate, the 

 apex narrow]}^ truncate, excavated but with no trace of a median 

 carina; frontal costa constricted below the ocellus, moderately 

 expanded ventrad, shallowly sulcate throughout the entire length, 

 punctate dorsad; eyes of medium size, ovate; antennae slightly 

 longer than head and pronotum. Tegmina slightly exceeding the 

 apex of the abdomen. Mesosternal lobes separated by an inter- 

 space subquadrate in outline ; metasternal lobes considerably sep- 

 arated by a rectangular interspace. Posterior tibiae with ten to 

 eleven spines on the external and eleven spines on the internal 

 margins. 



General color (specimens taken from spirits and dried) dull 

 yellowish-brown; postocular streak blackish, this streak extending 



J Rev. Syst. Orthopt., p. 127. 



