THE DUSKY HORNED LARK. 347 



The type specimen, No. 20387 (PI. 5, Fig. 30), Hendire (•(.llection, from a set 

 of two eg-gs, was taken by the writer, and represents a ratlier nniform and evenly 

 marked egg. 



135. Otocoris alpestris pallida Towxsend. 



SONORAN HORNKI) LARK. 



OtocorU idpcslris paUidn TowNSEND, Proceedings U. S. National iMnsenni, XIII, 1800, 1.3S. 



(B — , (J _, R — , C — , U 474;.) 



Geographical range: Lower California ami western Sonora, Mexico. 



The In-eeding range of the Sonorau Horned Lark is probably coextensive 

 with its geographical distribution, but comparatively little is yet known about 



this small pallid race. 



Mr. A. W. Anthony writes me: "Wliile Otocorh alpestris chrysolmna nests on 

 the San Pedro Martir Mountains at altitudes of about 8,500 feet, the nesting form 

 on both the lower eastern and western slopes of these mountains is Townsend's 

 Otocoris alpestris paJUda, a strikingly different race." In a more recent letter 

 (July 8, 1894) he writes: "Pallid Horned Larks are common and breed some- 

 where not far from my camp, south of San Quentin, Lower California, where 

 they came to the corral each day in small companies of from two to six, and 

 over forty were shot; but their number continued about the same; they dropped 

 down from high overliead. Skins taken in December show strong traces of 

 intergradation with Otocoris alpestris chrysolmmr I believe the eggs of tliis suli- 

 species still remain unknown, but they are not likely to differ materially from 

 those of our better-known Horned Larks, and its habits are undoubtedly also 

 similar. 



136. Otocoris alpestris insularis Townsend. 



INSULAR HORNED LARK. 



Otocori>< alpestris hmilaris ToWNSEND, Proceedings U. S. National Museum, 13, 1890, UO. 



(13 _, c — , R — , — , U — .) 



Geographical range : Islands ofi' tlie coast of southern California, including Santa 

 Cruz, Santa Rosa, San ISicolas, and San Clemeate. 



This insular race of Horned Lark has not yet been admitted to sul)- 

 specitic rank by the American Oi-nithologists' Union, but as I believe that it is 

 well entitled to such recognition, I enumerate it among the other numerous 

 recognized races of this genus. Mr. Dwight, in his paper on the "Horned 

 Larks," says, on page 152: "Mr. C. H. Townsend has kindly loaned me a series 

 of ten male Horned Larks from the Santa Cruz group of islands, Californui 

 including the type of the race he calls 'insularis: I am much surprised to find 

 his birds'^practically indistmguishabl.^ iV..m Oregon specimens of strigata. They 



