grinnell's verdin 435 



East to central Texas (Sequin, Corpus Christi, and Brownsville) ; and 

 eastern Tamaulipas (Matamoros). South to northern Tamaulipas 

 (Matamoros) ; southern Coahuila (Saltillo and Saral) ; probably 

 Durango (Durango) ; and southern Baja California (San Jose del Cabo 

 and Cape San Lucas). West to Baja California (Cape San Lucas, Mag- 

 dalena Bay, San Ignacio, and San Felipe) ; and California (San Diego, 

 Palm Springs, and Victorville). 



Three subspecies of the verdin are now recognized by the American 

 Ornithologists' Union (1944) committee on nomenclature. Modern 

 research, for which the references are given in their nineteenth supple- 

 ment to the Check-list, indicates that the Cape verdin (Auriparits 

 fiaviceps flaviccps) should stand as the type race of the species, as 

 Sundevall's type apparently came from the southern half of Baja Cali- 

 fornia. The eastern verdin (A. f. ornatus) occupies southern Texas, 

 southern New Mexico, and southern Arizona; and Grinnell's verdin 

 (A. f. acaciarum) ranges from southern Nevada and southwestern Utah 

 to northern Baja California. 



Egg dates. — Arizona: 40 records, March 4 to June 18; 20 records, 

 April 17 to May 18, indicating the height of the season. 



California: 56 records, March 6 to June 8; 28 records, March 28 to 

 April 11. 



Mexico: 26 records, March 22 to June 25; 14 records, April 7 to 

 May 8. 



Texas: 30 records, April 1 to June 5; 16 records, April 18 to May 6. 



AURIPAKUS FLAVICEPS ACACIASUM Grinnell 

 GKINNELL'S VERDIN 



Dr. Joseph Grinnell (1931) made an exhaustive study of the nomen- 

 clature of this species and an extensive search for Sundevall's type, to 

 which the reader is referred for the somewhat confusing details and a 

 history of the nomenclatorial changes. In the course of his study he 

 concluded that the verdins of southeastern California needed a new 

 name, for which he proposed the subspecific name acaciarum. He de- 

 scribes this race as "similar to Auriparus fiaviceps flaviceps (Sundevall), 

 but with yellow of fore parts somewhat less intense and extensive; body 

 color averaging a trifle browner, especially on dorsum; tail and wing, 

 more notably the former, averaging a little longer; bill apparently 

 averaging smaller. Similar to A. f. ornatus (Lawrence), but paler 

 and a little smaller." 



The new Check-list will give the range of this fonn as from southern 

 Nevada and southwestern Utah to northern Lower California. 



