70 NORTH AMERICAN BLATTIDAE 



Ottawa, Kansas, VI, 7, i 9 , [Univ. Kansas Cln.]. 

 Paris, Texas, V, 20, 1904, (at light), i d', [U. S. N. M.]. 

 Dallas, Tex., (J. Boll), 2 cf , [M. C. Z.]. 



Waco, Tex., V, 11 to VI, 5, (Belfrage), 9 a\ [M. C. Z. and Univ. Kansas Cln.]. 

 Tiger Mills, Tex., II, 1885, (F. G. Schaupp), i juv. d', [Hebard Cln.]. 

 Boerne, Tex., (in stomach of armadillo, Tatu novemcindum), i juv. 9, 

 [U. S. N. M.]. 



Kerrville, Tex., VI, 6, 1906, (F. C. Pratt), i d, [U. S. N. M.]. 



Hockley, Tex., VI, 16, 1891, (F. W. Thouron), 2 d, i juv. d, [U. S. N. M-.]. 



Victoria, Tex., IV, 5, 1907, (J. D. Mitchell), i d, [U. S. N. M.]. 



PARCOBLATTA94 new name 

 1862. Platamodes^^ Scudder, Bost. Jour. Nat. Hist., vii, p. 417. 



This genus was placed by Brunner in the synonymy under Isch- 

 noptera in i864»«; which action has been generally followed by sub- 

 sequent authors. Since that time no effort has been made until 

 recently" to separate the genera of the Ischnopterites, all the 

 species being referred without exception to Ischnoptera. Careful 

 study of the very large series of this group before us shows this 

 attitude to be untenable, and that numerous distinct genera have 

 been included under Ischnoptera. One of these, to which belong 

 the species assigned to Platamodes by Scudder, is amply distinct 

 from Ischnoptera sensu strictiore, as may be seen by the characters 

 given below. 98 To Parcohlatta belong all of the species of the 

 Ischnopterites found native in the United States, excepting Isch- 

 noptera deropeltiformis (Brunner) and Symploce lita Hebard. No 

 purely exotic species of the genus are known to exist. 



When compared with the species of Ischnoptera, those of the 

 present genus are found to be separated by the different type of 



»^ From parca = frugal. In allusion to the frugal habits of these insects. Living im- 

 mature examples before us have been extremely active for months at night, a few bread 

 crumbs and water apparently affording ample food. 



»5 Preoccupied by Platamodes Menetries, (Coleoptera), described in 1849. 



»8Nouv. Syst. Blatt., p. 128. 



" 1916. Hebard. "Studies in the Group Ischnopterites." Trans. Am. Ent. Soc, 

 xlii, pp. 337-383- 



98 The original description is a useless comparison with Penplancta, except that the 

 male styles are described as being very short and turned abruptly downward. 



