BIRDS OP NORTH AND MIDDLE AMERICA. 



249 



Adult female.— Length (skins), 200-212 (204.3); wing, 95-lOL (98.5); 

 tail, 93-101 <98.5); exposed culmen, 13-14.6 (13.8); tarsus, 26-27 

 (26.6); middle toe, 16-17 (16.3).« 



Southern Mexico, from southern Tamaulipas (Ciudad Victoria; 

 Miquihuana) ** and Territory of Tepic (Tepic;" Santiago") southward 

 through States of Hidalgo (Irolo;" Tula), Vera Cruz (Orizaba, etc.), 

 Puebla (Chalchicomula),* Mexico (Ajusco; Amecameca; Tlalpam), 

 Jalisco (Mascota), etc., to Oaxaca. 



(7) Lanius carolinenm (not of Wilson) Swainson, Philos. Mag., n. s., i, 1827, 368 



(table-land of Mexico); Isis, 1834, 784. — Lichtenstein, Preis-Verz. Mex. 



Vog., 1830, 2; Journ. fiir Om., 1863, 58 (reprint). 

 (7) Lanius ludovicianus (not of Linnaeus) Bonaparte, Proc. Zool. Soc. Lond., 



1837, 112 (Mexico). 

 L[anius] mexicanus Beehm, Journ. fur Orn., ii. Mar., 1854, 145, 148 (Mexico). — 



Oabanis, Mus. Hein., i, 1850, 74, part (Mexico). 

 (?) Lanius mexicanus Sclatee,, Proc. Zool. Soc. Lond., 1859, 375 (Oaxaca; Feb., 



Mar.); 1864, 173 (crit.); Cat. Am. Birds, 1862, 46.— Dugbs, La Naturaleza, 



i, 1869, 141 (Guanajuato). 

 Lanius excubitoroides (not L. excubitorides Swainaon) Sclatek, Proc. Zool. Soc. 



Lond., 1864, 173 (City of Mexico). 

 ILaniUsS] excubitoroides Sclater and Salvin, Nom. Av. Neotr., 1873, 13, part. 

 Collurio excubitoroides Baird, Review Am. Birds, 1866, 445, part. — Sumichrast, 



Mem. Bost. Soc. N. H., i, 1869, 548, part, at least (plateau and temperate 



regions. Vera Cruz). 

 (?) Lanius ludovicianus excubitorides Cox, Auk, xii, 1895, 398 (foot of Mount 



Orizaba, Vera Cruz, summer). 



LANIUS LUDOVICIANUS GAMBELI Ridgway. 

 CALIFOKmA SHRIKE 



Most like L. I. migrans in coloration, and sometimes not distin- 

 guishable as to coloration of upper parts; but averaging slightly 

 darker and duller gray above, with the upper tail-coverts usually 

 abruptly white or much paler gray, as in L. I. excubitorides; under 



o Six specimens. 



Specimens from the Territory of Tepic and State of Jalisco have larger bills than 

 those from more eastern localities, average measurements of the two series being as 

 follows: 



I am unable to discern any difference in coloration. 

 S Breeding specimens examined from these localities. 



