510 FAMILY VII. TETTIGONIID^E. THE KATYDIDS. 



sabalis group large bulky forms with antennae unicolorous, fas- 

 tigiuni very long and sharply pointed, and male with short broad 

 tegnrina and supra-anal notch deep. (6). The sulxipterus group 

 species of medium size with antennae spotted, fastigium of mod- 

 erate size and sharply pointed and male with longer, narrower 

 tegmina and supra-anal notch broadly and shallowly concave. 

 (c). The relini group species of small or medium size, with an- 

 tennae spotted and tegmina as in (7>), fastigium short and blunt, 

 and supra-anal notch of moderate width and depth. A careful 

 study of a large series of specimens from all parts of the State 

 would perhaps show that only three forms, salxtlis, siibaptents and 

 rehni are sufficiently differentiated to be regarded as valid spe- 

 cies; the other nominal forms being only offshoots, intermediate 

 subspecies or varieties, based upon slight modifications of the 

 very plastic secondary genital organs of the males. 



II. PYRGOCORYPHA Stal, 1873a, 50. (Gr., "tower" + "head.") 



Rather robust species of medium size, having the fastigium pro- 

 longed, triquetrous, acute, flat above and with a prominent basal 

 tooth on the lower side; eyes small, prominent; antennae very 

 slender, about as long as body ; prouotum with disk flat, front and 

 hind margins subtruncate; lateral carinae obtuse; lateral lobes 

 perpendicular, longer than deep, their front margin broadly ob- 

 liquely rounded into the lower one, this short, oblique, its posterior 

 angle obtuse, hind margin broadly rounded ; humeral sinus broad 

 and deep; tegmina elongate, their tips rounded; front and middle 

 femora armed beneath with three to five spines on outer margin; 

 hind femora slender with numerous spines on both lower mar- 

 gins; all the tibiae armed beneath with numerous slender spines; 

 meso- and metasternal lobes triangular, acute. Cerci of male 

 stout, subcylindrical, curved, each ending in two claw-like ap- 

 pendages, these flattened, strongly incurved and ending in a 

 sharp spine. Ovipositor slender, straight, acute, of nearly equal 

 width throughout, not reaching tips of tegmina. 



Kirby (1906, 239) recognized nine species, distributed 

 throughout the world, only one of which inhabits the United 

 States. 



233. PYRGOCORYPHA TJNCINATA (Harris), 1841, 132. Hook-faced Cone-head. 

 Green or pale reddish-brown; mandibles black; tegmina with numer- 

 ous widely scattered, minute black dots. Fastigium elongate-triangular, 

 about as long as occiput, flat and very rugose above, its tip ending in a 

 minute, sharp decurved spine. Disk and lateral lobes of pronotum 

 strongly rugose-punctate. Hind femora short, reaching slightly beyond 



