238 BULLETIN" 143, UNITED STATES NATIONAL MUSEUM 



SPECIMENS EXAMINED 



California: Female, male, Ocean Beach, August 3, 1921 (Knaus, Niiiinger,3 

 Hoover) ; female, Coahuila, San Diego County, August 18, 1914 (J. C. 

 Bradley) ; female, San Diego, July, 191S ; male. La Jolla, San Diego County, 

 August 28, 1917 (H. Klotz) ; female. Laguna Beach. July 24, 1921; female, 

 Laguna Bay, August 1, 1915 ; female. Newport, August 6. 1921 ; male, New- 

 port Beach, Orange County, July 11, 1917 (E. Chandler) ; 2 females, 

 Redondo Beach, June 17 (Dyar and Caudell) ; 2 females, Claremont 

 (Essig) ; 2 females, male, Claremont (Baker); female, Claremont; 3 

 females. Mountains near Claremont (Baker) ; female, Redlands, July 3, 

 1918 ; female, Redlands ; female, Fish Creek, San Bernardino Mountains, 

 July 5, 1906 (J. Grinnell) ; female. San Bernardino; 2 females, San 

 Bernardino Mountains; female, Simi, August 9, 1916 (C. Stoerkca) ; female, 

 Pasadena, May 20, 1907 (F. Grinnell, Jr.) ; female, male, Pasadena 

 (F. Grinnell, Jr.); male, Pasadena, July 28, 1898; female. Pasadena; 

 2 females, Sespe River, Fillmore. August 5, 1915 (C. H. Kennedy) ; female, 

 Fillmore, November 2, 1915; female, Mount Wilson, September 14. 1908 

 (J. C. Bradley) ; female, Moorpark, April 15, 1916; female, Tejunga. June 

 25-28, 1918 (C. B. Philip) ; female, Lompoc. September 9, 1908 (J. C. 

 Bradley); female, Delano, June 21 (H. M. Jeancon) ; female. Sequoia 

 National Park; female, Lindsay, October 3, 1911 (C. E. Pemberton) ; 

 female, Lindsay (C. E. Pemberton) ; female, Fresno County; female, Paraiso 

 Springs, June 3, 1928 (L. S. Slevin) ; female, Carmel, Monterey County, 

 September 12, 1919 (L. S. Slevin) ; female. Pacific Grove (Saunders) ; 

 female, Monterey County, September 23, 1922 (R. T. Hatt) ; female. 

 Pleasanton ; male, Point Reyes, September 10, 1906 ; female, Mendocino ; 

 female, Lassen County, September, 1918 ; 11 females, male. 



Nevada: Female, Ormsby County, July (Baker). 



Oregon: Female, Riddle, August. 



This species has been recorded also from Arizona, but I have not 

 seen any specimens from that state and the record may rest upon 

 a misdetermination. Many specimens show a faint yellowish tinge 

 m the pubescence, while all of those from northern California have 

 a decided yellowish color rather than white. The specimen from Car- 

 mel is a deep yellow in color but is undoubtedly this species. Cres- 

 son's erudita is a yellowish specimen of sackenii. Inasmuch as this 

 color character does not seem to be constant but varies considerably in 

 deirree I have retained erudita as a synonym of sackenii. 



The male has the following characters in addition to those given 

 in the original description : anterior margin of the pronotum 

 emarginate, the face of the emargination glabrous; tegulae glabrous, 

 except for a few scattered punctures at the basal and inner lateral 

 margins; apical tergite longitudinally ridged medially, shining, 

 slightly rugose, without an apical fringe of hairs ; second abdominal 

 sternite with a median pit, closely packed with erect hairs. The male 

 is very similar to the male of magna but may be distinguished from 

 the latter by the absence of the apical fringe of hairs on the 

 pygidium. 



