148 PROCEEDINGS OF THE ACADEMY OF [Jan., 



this intensive color is only pure laterad, mesad the tone being aniline 

 yellow to sulphine yellow, thickly and closely stippled with maroon. 

 The lateral maroon bordering lines are narrowly present in even the 

 recessive males as well as faintly indicated in the recessive females. 

 Lateral color varying from sulphine yellow to buffy citrine, the males 

 being almost all sulphine yellow, particularly pure in the intensive 

 males. Pale lateral lines very narrow, more or less indicated in all, 

 varying from creamy white to maize j^ellow, rarely touched ^vith 

 orange pink, extending from the caudal margin of the eye to the base 

 of the cercus. Eyes varying from chamois (recessive male) and buffy 

 citrine (recessive female) to old gold (intensive male) and cinnamon 

 bro\\ii (intensive female). Antennae varying much the same as the 

 dorsal color. Tegmina of male largely oil green, the proximal 

 portion of the humeral trunk blackish, large portion of anal field 

 washed with warm sepia, marginal field shell pink; temina of female 

 with discoidal field oil green, anal field similar, occasionally (intensive 

 female [allotjrpe]) washed with maroon, marginal field shell pink to 

 ochre red. Ovipositor varying with the dorsal color. Limbs varying 

 from pois green to grape green, occasionally washed with purplish 

 vinaceous on median and cephalic pair in recessive specimens, of the 

 same greatly suffused, lined and spotted with maroon in intensive 

 individuals. The latter condition is very decided in its extreme, the 

 femora having nearly solid pregenicular patches dorsad, while the 

 distal extremities of the tibiae and all of the tarsi are suffused with 

 maroon. The type and allotype are in the extreme intensive con- 

 dition, which is shared or approximated by several other specimens. 



Distribution. — The present species is known only from three locali- 

 ties in the state of San Luis Potosi in the east-central portion of the 

 Mexican tableland: Sierra de San Miguelito, mountains twelve 

 leagues east of San Luis Potosi city, and mountains at Alvarez. The 

 first-mentioned locality we are unable to locate, so its altitude cannot 

 be given, but it probably has much the same elevation as the other 

 localities, which range between five and six thousand feet. Alvarez 

 is on the upper course of the Rio Verde, a head tributary of the 

 Rio Panuco, east of the city of San Luis Potosi. 



Morphological Notes. — The tegmina of the male show variation in 

 the angulation of the sutural margin and in the character of the 

 distal margin. The latter is more arcuate in one specimen than in 

 the type and in one paratypic male it is more truncate. The curve 

 of the stridulating vein also varies somewhat. The stalked process 

 on the male subgenital plate in one paratype is similar to that of 



