COLLURIO EXCUDITOROIDES. 453 



COLLURIO LUDOVICIANUS. 



ft. c.Tcuhitoroides — Wliifc-ninipcd Shrilcc. 



Lanius cxcuhitcroidcs, SWAIKSON, Fauna Dor. Am., II, 1831, 115, pi. 35. 

 CvHi/rii) cxcubUoroides, Baird, B. N. Am., 1S5S, 527, pi. 75, fiy'. - ; Oat. N. Ain. B., 



"lS59, No. 238. 

 Collurio cxcubUoroides. Baiud, Review Am. B., ISGO, 415.— Coui-i'.u, Oiii. C.il., 13;'.. 

 CoUurio ludovickimts var. cxcuhito)-oi!Jrs; CoUF.S, Key, 1S72, 125; Olieck List, 1S7;'., 



No. 135a.— B. B. & R., Dist. N. Aai. B., I, 1871, 421, pi. xix, iiy. 3.— Den- 



snAW, 1875, 233. 



Scarcely a locality was A'isltcd where this Shrike was not fouiul, in 

 greater or less plenty, its range including both the Sacramento Valley a.nd 

 the country eastward of the Sierra Nevada,. At Sacramento it was freqnentl}' 

 observed about the outskirts of the city, where it frequented the oak-groves 

 and scattered trees, or the borders of the fields. In the Interior it was most 

 common at those localities where there was a greater or less extent of willnv 

 thickets, with meadow-lands and sage-brush adjacent; but it was not i-are 

 on the higher mountain ranges, where it inhabited the mahogany and cedar 

 groves in preference to other places. It was most usually observed perch- 

 ing quietly on the summit of a dead weed-stalk or prominent naked bnnich 

 of a bush or tree, patiently watching for its food, or during its curious 

 undulating flight, so strikingly characteristic of the species of this genu.s. 



List of specimens. 



1.50, Sjiir^; valley of tlie numbokit (Camp 17), September 2, 1SG7. 9— 12 J— 3] |— 



gj; 1^ — 1 — 2-,\. Bill, slaty bora-black, basal portion of lower mandible paler; iris, 



brown ; tarsi and toes, black. 



344,j?a\; cotton-woods of Carson River, Fort Cliurehill, Nevada, DecemberG, 18(;7. 

 f)ii_12-;'— 1—31— J 1—1—4—2;]. Bill deep black, lower maudible paler basally; iris, 

 brown; tarsi and toes, black. 



442, <? ad.; Carson City, Nevada, March 10,1^08. i'l—l,-,— 1 j— 3;]. Bill, pure 

 black ; iiis, bister; tarsi and toes, black. 



482, S ad.; Carson, April 2, ISGS. 9,i— 13i— 4y\— 3-/,^. Same remarks. 



.524, <? ad.; Carson, April 24, ISGS. 9— 13— 4i— 3|. Same remarks. 



S49, 9 ad.; East Humboldt Monntain.s, Nevada, July 21, 1808. (Mahoganies; 

 altitude 9,000 feet.) 9J— 13— (?)— 3^. Bill, pure black; inteiior of mouth, livid llesliy- 

 white ; iii.s, bister; .scutellse of tarsi and toes, pure black, the interspaces dirty white. 



889, j«r.; East Humboldt Mountains, September 4, 18GS. SJ- 12^— (?)— 3r\- RiH. 



