1904.] NATURAL SCIPJNCES OF PHILADELPHIA. 



513 



NOTES ON ORTHOPTERA FROM NORTHERN AND CENTRAL MEXICO. 

 BY JAMES A. G. REHN. 



The following study is based entirely on material in the collection 

 of the Academy of Natural Sciences of Philadelphia. The States of 

 Chihuahua, Jalisco, San Luis Potosi and Tamaulipas arc represented 

 in the^ series of about four hundred specimens studied. The most 

 extensive series is that, comprising two hundred and sixty-four speci- 

 mens, collected in Jalisco, chiefly at Guadalajara, in 1903, by Mr. J. F. 

 McClendon, and purchased by the Academy. An exceedingly interest- 

 ing collection of seventy-one specimens from San Luis Potosi and 

 Tamaulipas was collected by Mr. M. E. Hoag, and this limited series has 

 furnished a surprising number of new and little known forms. Three 

 smaller collections are embraced in this study; a number of Guadala- 

 jara specimens collected and presented by Mr. C. H. T. Townsend; a 

 few interesting individuals from Victoria, Tamaulipas, collected by 

 S. N. Rhoads, and a series of Casas Grandes, Chihuahua, specimens, 

 collected and presented by Dr. W. E. Hughes. 



Family BLATTID^. 



Genu? PSEUDOMOPS Serville. 

 Pseudomops oblongata (Linnaeus). 



Tuxpan, Jalisco, September 4, 1903. (McClendon.) One male. ' 



Pseudomops discoidalis (Burmeister). 



Guadalajara, Jalisco. August 24 and September 18, 1903. (Mc- 

 Clendon.) Two females. 



These specimens agree with the descriptions and single Orizaba 

 specimen examined, except that the antenna are not annulate with 

 whitish and the general color of the tegmina is more blackish. 



Periplaneta americana (Linnaeus). 



Guadalajara, Jalisco. August 24, 1903. (McClendon.) One male. 

 Family MANTID^. 



Genus STAGMOMANTIS Saussure. 

 Stagmomantis limbata (Haan). 



Guadalajara, Jalisco. September 14 and 18, 1903. (McClendon.) 

 One male, five females. 



One of the females in this series represents the dark wine-color phase. 

 33 



