1909.] NATURAL SCIENCES OF PHILADELPHIA. 137 



striking pearl markings on the pronotum, pleura and limbs are present 

 in all the specimens, even in those in the immature condition, the bril- 

 liancy of these markings in the living insect being retained by a good 

 proportion of the series. 



The stridulation of Bootettix is a faint buzzing szszszsz terminated by 

 a distinct whirr and repeated at intervals. 



EKITETTIX Bruner. 

 Eritettix variabilis Bruner. 



A single female of this species was taken at Cloudcroft, July 14, and 

 eleven males were collected at Aden, July 21. At Cloudcroft it was 

 taken in a mountain meadow, while at Aden the males were all collected 

 among a scant covering of desert plants on the rocky hillside. As in 

 the case of the other species of this genus, these individuals were found 

 to be extremely active. 



The males show a considerable amount of variation in size, but are 

 rather uniform in coloration. However, none of the males have their 

 color pattern as contrasted as the female, this being chiefly due to the 

 uniform dorsal color of the males, the female having the pair of black- 

 ish dorsal lines quite distinct. The supplementary dorsal carinse of 

 the pronotum are rather well marked over the whole dorsum of the 

 pronotum in some males, indicated only on the metazona in otherrs 

 and entirely absent in a few, while the female possesses weakly devel- 

 oped ones. 



This species has previously been recorded from Silver City, Grant 

 County, and La Trementina, San Miguel County, New Mexico, and 

 Douglas, Cochise County, Arizona. 



OPEIA McNeill. 

 Opeia imperfecta Bruner. 



During brief train stops made on July 8 at Dunlay, Medina County, 

 and Spofford, Kinney County, Texas, this species was captured in a 

 grassy spot under mesquite trees at the former locality and in dry grass 

 at the latter. A single male was taken at Dunlay and four of each sex 

 were collected at Spofford. 



These specimens demonstrate the unreliability of the length of 

 the tegmina and the form of the apex of the same as specific characters 

 in this genus. The typical specimens examined by Bruner all pos- 

 sessed rather abbreviate tegmina, "about one-half ( 9 ) or nearly three- 

 fourths (c?) as long as the abdomen, their apices pointed or acumi- 

 nate." In every character and every proportion the Dunlay and 

 Spofford individuals fully agree with the original description, except 



