452 PROCEEDINGS OF THE ACADEMY OF [Oct., 



This species is now known from Salt Lake City and Valley and Beaver 

 Creek Hills, Utah, Tucson and San Bernardino Ranch, Arizona, and 

 Cima and Cottonwood, California. 

 Trimerotropis inoonspicua Bruner. 



Among the tree yuccas at Cima seven males and two females of 

 this species were taken on August 12. At first glance two species 

 appear to be represented in the series, one typically having the teg- 

 minal bars more sharply defined and usually broad, the wing-band 

 rather broad and hardly interrupted and the ventral sulcus of the 

 caudal femora blackish with two yellowish interruptions; the other 

 type having the general coloration paler and more uniformly buffy 

 and hoary-white, the tegminal bars narrower and frequently divided 

 into the component annuli, the wing-band narrow, reduced in length 

 and broadly interrupted, and the ventral sulcus of the caudal femora 

 yellowish white with a single blackish interruption. When compared 

 with all the specimens in the series these apparently separate types 

 are found to have absolutely no structural characters to separate 

 them, and one specimen having the tegminal bars as in the first has the 

 wing-band nearer to that of the second described, while several other 

 specimens apparently belonging to the second type have a decided 

 blackish cloud at the base of the femoral sulcus. 



This species has previously been recorded from the Grand River 

 region of western Colorado and Bright Angel, Grand Canyon, Arizona. 



Trimerotropis vinculata Scudder. 



This widely distributed species is represented by a considerable 

 series of specimens distributed as follows: Mill Valley, August 23, 

 one male; Merced, August 30, one female; Tracy, Alameda County, 

 August 30, one female; Echo Mountain, August 8, two males; Rubio 

 Canyon, August 8, four males; Altadena, August 25, one female; 

 Pasadena, July 18, one male and two females, F. Grinnell, Jr.; Pasa- 

 dena, August 1, four males, seven females; Alamitos Bay, August 31, 

 one female; Miramar, August 31, eight males, five females; Santa 

 Catalina Island, August 3, twenty-five males, six females; South 

 Fork, Santa Ana River, 6,200 feet, San Bernardino Mountains, July 

 2, J. Grinnell, one. male; Fish Creek, 8,500 feet, San Bernardino 

 Mountains, June 27, J. Grinnell, one male; Indio, August 29, four 

 males; Cottonwood, September 9, one male; Cima, August 12, two 

 males, four females; North Range, Providence Mountains, August 

 12, one male, one female; foothills Bird Spring Mountains, Nevada, 

 August 11, one female; Arden, Lincoln County, Nevada, August 9, 

 ■one male; Las Vegas, Nevada, August 10, four males. 



