MORGAN HEBARD 221 



HOMOEOGAMIA Burmeister 

 1838. Ilomoeogamia Burmeister, Handb. Ent., ii, abth. ii, ])t. i, p. 490. 



Genotype, by monotypy: Ilomoeogamia mexicana Burmeister. 



This genus differs from Arenivaga and Eremohlatta in the arma- 

 ment of the cephalic femora in both sexes; in the male, the mar- 

 ginal field of the tegmina is broader and styles are present on the 

 subgenital plate; in the female, distinctive and somewhat reduced 

 tegmina and atrophied wings are present and the subgenital plate 

 is valvular, the valves remarkably produced and compressed. 



In both Homoeogamia and Arenivaga the male tegmina usually 

 (except in A. erratica) show a faint glassy luster, never as pro- 

 nounced as in Eremohlatta. 



Homoeogamia mexicana Burmeister (Plate IX, figures i and 2.) 

 1838. II[nnwcfl'^amia] mexicana Burmeister, Handb. Ent., ii. abth. ii, pt. i, p. 490. 

 [d", 9 ; -Mexico.] 



There is every probability that both gitttipennis^'''^ and eqiialis^'"'' 

 of Walker are synonyms of the present species. If this is true, 

 Saussure's azteca,^'^^ now placed as a synonym under giittipennis, 

 will also be referred to the present synonymy. 



Both sexes of the present species are distinctive in appearance 

 from the species of the other American genera of the Polyphaginae. 

 The numerous characters by which the species is distinguished are 

 given in the preceding keys. 



We would note that the styles of the male subgenital plate are 

 situated laterad; they are moderately stout, cylindrical and about 

 fi\c times as long as broad. 



Measurements {in millimeters) 



Jalapa, Vera Cruz, Mexico 22 . 5 



Jalapa, V^era Cruz, Mexico 23 



Tacubaya, Distrito Federal, Mexico 



^^ 1869. Zetobora guttipennis Walker, Cat. Dermapt. Saltat. and Blatt. Siippl. Br. 

 Mus., p. 123. [cf , Eastern slope of mountains of southern Mexico.] 



3^" i-Sji. Polyptiaga aeqtialis Walker, Cat. Dermapt. Saltat. Br. Mus., v, Suppl. Cat. 

 Blatt., p. 3. [cj". South Mexico.] 



^^1893. [Homoeogamia] azteca Saussure, Rev. Suisse Zool., i, p. 296. [a^, 9; 

 [Omilteme, Guerrero, 8000 feet,) Mexico.] 



MEM. \y\. ENT. SOC, 2. 



