1914.1 NATURAL SCIENCES OF PHILADELPHIA. 159' 



which has it sayal brown, the segments of the abdomen stippled and 

 beaded as on the dorsum, the lateral lobes of the pronotum touched 

 with mignonette green in this type. Head with the eyes varying 

 from cinnamon buff to snuff brown. Pronotum with the lateral 

 lobes edged with the color of the pale bars in all but the recessive 

 females, in one of the intensive females there being a considerable 

 area of chalky white on the ventral portion of the lobes. Tegmina 

 of male with the humeral trunk claret brown to bay, discoidal field 

 varying from yellowish olive green to cosse green, anal field sharing, 

 the same tone, but more or less oil green mesad with the proximal 

 portion more or less mahogany red. Tegmina of the female divided 

 between the dorsal and lateral color with the region of the humeral 

 trunk claret brown to bay. Limbs almost wholly of the lateral color, 

 occasionally more greenish in tone, in intensive individuals more or 

 less washed, lined and stippled (particularly on cephalic and median 

 pair) with claret brown. Dorsal aspect of the cerci of male washed 

 with claret brown. Ovipositor with teeth blackish. 



Distribution. — This species, as far as known, has a limited range in 

 the east-central portion of the Mexican tableland, occurring at three 

 localities in the state of San Luis Potosi: San Luis Potosi City and 

 hills near the same, mountains twelve leagues east of San Luis Potosi 

 and mountains at Alvarez. The latter locality is south of the upper 

 course of the Rio Verde, a tributary of the Rio Panuco which empties 

 into the Gulf of Mexico near Tampico. As far as we are able to 

 determine from several topographic maps, the localities are situated 

 between five thousand and six thousand two hundred feet elevation. 



Morphological Notes. — In the female sex there is some little varia- 

 tion in the shape of the caudal margin of the disk of the pronotum, - 

 this ranging from gently arcuate to sinuato-truncate. The inter- 

 space between the tegmina also varies considerably in width in the 

 same sex, in the greatest extreme being subequal in width to a single 

 tegmen. The ovipositor varies slightly but appreciably in depth 

 and in the number of teeth on the dorsal margin (6 to 8). 



Remarks. — We take pleasure in dedicating this species to Mr. 

 A. N. Caudell, of the United States National Museum, who called 

 our attention to the peculiar cerci of the male sex. 



Specime7is Exaynined. — 12; 4 males, 8 females. 



San Luis Potosi, Mexico, (Palmer), 3 cf, Type and paratypes^ 

 1 9 . [Scudder Collection and U. S. N. M.] 



Hills near San Luis Potosi, Mexico, October 15, (Palmer), 2 9- 

 Paratypes. [Scudder Collection.] 



