142 PACIFIC COAST AVIFAUNA Novis 
430 (622b) Lanius ludovicianus gambeli Ridgway 
CALIFORNIA SHRIKE 
Synonyms—Collyrio excubitoroides, part; Lanius excubitoroides, part; Lan- 
ius ludovicianus excubitorides, part; Collurio ludovicianus; Collurio ludovici- 
anus excubitoroides, part; Lanius ludovicianus robustus, part; Lanius elegans, 
part; White-rumped Shrike, part; Butcher-bird, part. 
Status—Abundant resident west of the Sierran divide chiefly in the Upper 
and Lower Sonoran zones. Recorded north to Humboldt Bay (Townsend, Proc. 
U. S. Nat. Mus., x, 1887, p. 222) ; casual on the Farallones (W. E. Bryant, Proc. 
Calif. Acad. Sci., 2nd ser., 1, 1888, p. 48). The subspecies is most typical in the 
humid coast belt, south into Monterey County; the shrikes of the San Diegan 
district and the San Joaquin-Sacramento Valley are here considered gambeli, 
but in characters incline toward excubitorides. 
431 (622c) Lanius ludovicianus anthonyi Mearns 
IsLAND SHRIKE 
Synonyms—Collyrio excubitoroides, part; Lanius ludovicianus gambeli, 
part; Lanius ludovicianus excubitorides, part; Lanius anthonyi; Lanius ludovi- 
clanus mearnsi; Lanius mearnsi; San Clemente Shrike. ~ 
Status—Fairly common resident on San Clemente, Santa Catalina and 
Santa Cruz islands (many records) ; also reported from Santa Rosa and Anacapa 
islands (Willett, Pac. Coast Avif. no. 7, 1912, p. 92). 
432 (624) Vireosylva olivacea (Linnaeus) 
RED-EYED VIREO 
Status—Rare transient; one record. An adult male taken at San Diego, 
October 6, 1914 (Huey, Condor, xv, 1915, p. 58). 
433 (625) Vireosylva flavoviridis Cassin 
YELLOW-GREEN VIREO 
Synonym—Vireo flavoviridis. 
Status—But one record: a single specimen taken in the Santa Ana River 
bottom near Riverside, October 1, 1887 (Price, Auk, v, 1888, p. 210) ; verified 
by Ridgway (Bds. N. & Mid. Amer., m1, 1904, p. 146) who states that the label 
gives the date as September 29, instead of as above. 
434 (627a) Vireosylva gilva swainsoni (Baird) 
WESTERN WARBLING VIREO 
Synonyms—Vireo gilvus; Vireo gilvus swainsoni; Vireosylvia gilva; Vireo- 
sylvia swainsom; Vireo swainsoni; Swainson Warbling Greenlet; Warbling Fly- 
catcher. 
Status—Common summer visitant in suitable parts of the Upper Sonoran 
and Transition zones the whole length of the state, chiefly west of the Sierran 
divides. Recorded breeding as far south as Escondido, San Diego County 
