400 



PROCEEDINGS OF THE ACADEMY OF 



[July, 



Measurements of caudal femur, tegmen and ovipositor. 

 Females {eighteen specimens). 



Males (twenty specimens). 



The entire series of thirty-eight specimens is macropterous. 



There is considerable variation in the depth of the coloration, some 

 individuals having the head so much suffused with blackish that the 

 usual pale occipital lines are not visible. 



Gryllus armatus Scudder. 



This species came to light abundantly at Yuma on the evenings of 

 July 27 and 28, a series of nine males and forty-five females being 

 collected. A pair were also taken at Tucson, July 26, under the same 

 conditions. All the specimens collected are macropterous. 



To assist future workers in this difficult genus measurements taken 

 from the Yuma series are here given. 



