402 " " PROCEEDINGS OF THE ACADEMY OF [J^ly, 



fourteen males and sixteen adult and one immature female was taken. 

 There is an appreciable but not very great variation in the size of 

 individuals of this species, while the coloration varies only in the 

 suffusion of the pronotal markings; some specimens having them 

 distinct and others having them clouded with a wash of the darker 

 color. The males without exception have the pronotum dark and 

 the pattern not apparent. 



This species was more agile than Gryllus armatus, with which it was 

 associated. 



(ECANTHUS Serville. 

 CEoanthus niveus (DeGeer), 



A single male of this species was taken near Bright Angel Trail, 

 Grand Canyon, at an elevation of about 4,900 feet, September 12. 

 It was taken from a weed resembhng rabbit-weed in the pinon zone. 

 (Eoanthus nigricornis Walker. 



A single male from the rim of the Grand Canyon at Bright Angel, 

 September 11, is referred tentatively to this species. The antennal 

 markings are not as complex as usual in the species, but the propor- 

 tions and general coloration are nearly typical. The individual was 

 captured stridulating at night on the species of weed referred to under 

 (E. niveus. 



(Eoanthus quadripunotatus Beutenmiiller. 



Four specimens taken at Tucson, July 23-26, are referred to this 

 species, one male, a female, attracted to light, and two immature 

 individuals. 



