1914.] NATURAL SCIENCES OF PHILADELPHIA. 131 



(lateral) margins, but not (or hardly) caudad of the dorsal margin 

 of the pronotum (caudal margin of disk). v 



Remarks. — There can be little doubt of the correctness of associ- 

 ating Brunner's name with this species, as apparent discrepancies 

 between the description and present material seem to be entirely 

 color differences or else due to a different conception of terms and the 

 relativity of such. The evidence we have of the probable source of 

 the original material and locality of the same assists one considerably 

 in locating the species, as but one form of the genus is, so far as 

 known, found in the Dallas region. 



Specimens Examined. — 21 ; 12 males, 9 females. 



Dallas, Texas, (Boll), 7 d^, 6 9 , [Scudder Collection]; 1 c^, [U. S. 

 N. M.]. 



Dallas, Texas, 1 cf', 2 9 , [U. S. N. M.]. 



Texas, (Belfrage), 1 9 , [Scudder Collection]. 



Gregory, San Patricio Co., Texas, July 30, 1912, (H.), 1 cf . 



Beeville, Bee Co., Tex^s, July 28, 1912, (H.), 1 cf . 



Uvalde, Uvalde Co., Texas, elev. 1,000-1,100 feet, August 21-22, 

 1912, (R, andH.), 1 cf. 

 Dichopetala oreoeca-* n. sp. 



Closely related to but a single species — D. catinata (vide infra) — 

 from which it can immediately be separated by the lobe of the male 

 cercus having the margins converging distad, by the ventral margin 

 of the same with a distinctly indicated longitudinal cingulum, the 

 narrower subgenital plate of the male, which has the lateral margins 

 subparallel distad, and by the more ample tegmina in the same sex, 

 while in the female sex the ventral margin of the lateral lobes are 

 straighter in the present species, the ovipositor is more elongate, 

 Avith the dorsal margin more regularly arcuate and the distal teeth 

 of same more numerous, and the apices of the subgenital plate 

 spiniform, while in both sexes the eyes are less prominent in oreoeca. 



Type: cf; Canyon behind PuUiam Bluff, Chisos Mountains, 

 Brewster Co., Texas. Elev. 4,600-5,000 feet. September 7, 1912. 

 (Rehn and Hebard.) [Hebard Collection.] 



Description of Type. — Size medium; form moderately elongate. 

 Head with the occiput full, but little declivent to the fastigium and 

 antennal scrobes; fastigium compressed, lamellate, in contact with 

 the fastigium of the face; eyes prominent, ovate in outline, infra- 

 ocular portion of the gense but little longer than the eye; antennae 



28 



'OphoiKoc, mountain-dwelling. 



