B2S 



U. S. p. E. E. EXP. AND SUEVEYS — ZOOLOGY — GENEEAL EEPOET. 



point as far from the eye as this is from the tip of the lower mandible. The under parts are 

 more bluish on the sides. There is a white patch on the inner weh of the secondaries at the 

 base, which extends nearer the margin along the inner towards the tip, and is distinctly and 

 sharply visible from above. In excubitoroides this is seen on the under surface only ; in 

 ludovicianus not at all. The most striking difference is in the much larger bill, which measures 

 .75 of an inch in a straight line from base above to point, instead of .60. The nostril is .60 of 

 an inch from the tip, not .46. This bird has been referred to L. elegans of Swainson,' but 

 seems to differ in some appreciable points. 



The Lanius mexicanus of Brehm, (Cabanis' Journal, II, March, 1854, 145,) though similar 

 to the excubitoroides, yet appears to differ specifically both from this and elegans. Lanius 

 nootica (Gmelin, I, 309) has not been identified in later times. It evidently is not a true 

 shrike, however. 



Lid of specimens. 



"Lanius elegans, Sw. — White-winged Slirlke. 



Lanius eleram, Sw. F. B. A. II, 1831, 122.— Nuttall, Man. I, 2d ed. 1840, 287.— Gambel, Tr. A. N. Sc. I, 1843, 

 2G1.— BoNAP. Rev. et Mag. Kool. V, 1853, 295. 



Clear bluish gray beneath unspotted white, with a frontlet of the same color with the head ; a broad white band across the 

 wing ; a slender and very cuneiform tail, »ntirely bordered with white ; the second quill feather longer than the sixth, the 

 ourth the longest ; and tarsi exceeding the length of the bill, (measured from the angle of the moutli.) 



