104 PROCEEDINGS OF THE ACADEMY OF [Jan., 



at San Antonio it was taken in the hilly country immediately north 

 of the city. Tamos, the southern limit of the species, is near Tampico, 

 on the Rio Panuco, in the extreme northern part of Vera Cruz. 



Biological Notes. — At Laguna del Gato the present species was 

 taken on a low, very green rhamnaceous shrub (probably Condalia 

 obovata), where it was common locally. At Mission five individuals 

 were heard at night in bushes, several as much as five feet from the 

 ground. At San Antonio the species was very local, not at all 

 common and hard to find in a low, stout, green rhamnaceous bush. 

 On the hill slopes at Uvalde it occurred on the low Acacia berlan- 

 landieri, which there replaced the ubiquitous mesquite, while at the 

 foot of the hills it was taken on tall rank green weeds. On the 

 Del Rio hills, which were clothed with low Acacia, numerous other 

 thorny bushes, occasional arborescent yuccas, and several species of 

 Opuntia, the present species was secured in catclaw {Mimosa sp.) 

 and other thorny bushes. The specimens taken by Pratt at San 

 Antonio were from Opuntia lindheimeri, while at Corpus Christi and 

 in Maverick County it occurred on plants of the same genus. 



Synonymy. — The erroneous determination of the species as hrevi- 

 hastata by Hunter, Pratt and Mitchell, we have corrected by an ex- 

 amination of the original material. 



Remarks. — -The most striking diagnostic characters of this species 

 are, the abbreviate subgenital plate of the male and the combination 

 of a short ovipositor and the narrow interspace between the tegmina 

 in the female. The latter space never equals the width, and rarely 

 as much as half the width, of a single tegmen. The male subgenital 

 plate is seen, when compared with that of hrevihastata, to be broader, 

 not at all produced mesad, except that the plate is in general narrowed 

 in that direction, the distal margin is V-emarginate mesad with 

 slight subtruncate sections laterad, which are flanked at the angles 

 with very short blunt subobsolete tubercles. The cercus has the 

 extremity more acute than in hrevihastata, also more elongate, with 

 the character of the median tooth slightly different. The bvipositor 

 has the ventral margin straighter, the proximal depth less in propor- 

 tion to that of the apex and the apex slightly more acute. The more 

 ovate eye is immediately apparent on comparison. 



Specimens Examined. — 54; 21 males, 33 females. 



Pecos. August 18, 1 9 , [Scudder Coll.]. 



Del Rio, Valverde Co., Texas, elev. 900-1,100 feet, August 22-23, 

 1912, (R. andH.), 3 d^, 1 9. 



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

 1912, (R. and H.), 3 d" ; last week of July, 1 d", [Scudder Coll.]. 



