26 BILLKTIN: Ml set M ok lOMPAHATlVK Zoi'tLOGY. 



Mras-unuintKf. — 7'///x'. adult 9; wintr. 101; tail, 80; tarsus, 2'^; 

 expostMJ culnien, 2(j. Toixiiypf, M. C\ Z. 124.")28, adult cf ; wing, 109; 

 tail, 88; tarsus, 23; exposed culmen, 27. 



Remarks. — We have named this hird in honor of Christian de La- 

 fresnaye, Lt. Colonel d'artillerie en retraite, to Avliom Me are indebted 

 for nnu'h assistanee in bringing together material for a sketch of the 

 life of his illustrious fatlier. 



PlCOI^^^PTES AFFIXIS LIGNICIDA, subsp. UOV. 



Type.— M. C. Z. 49,359. Adult &. Mexico: Tamaulipas, Ga- 

 lindo. 24 March, 1909. F. B. Armstrong. 



Characters. — Similar to P. affinis affinis (Lafr.), but very much paler 

 anil grayer throughout; back more olivaceous, less reddish brown; 

 head much grayer, less brownish; under parts paler, grayer, and 

 wholl\- lacking the rich brown (raw umber) coloring of the under parts 

 in C. a^lpnis ajfinis. Size about the same. 



Measurements. — Ti/pe, adult cf ; wing, 108; tail, 95; tarsus, 21: 

 exposed culmen, 28. Topotype, M. C. Z. 49,354, adult 9 ; wing, 107; 

 tail, 99; tarsus, 21.5; exposed culmen, 28. 



Remarks. — Mr. Armstrong collected a series of eleven skins of this 

 strongly marked northern race of P. affinis among the very arid 

 tropical hills of the region north and west of Ciudad Mctoria. At the 

 time Dr. J. C. Phillips reported on the Armstrong Collection (Auk, 

 January, 191 1, 28, p. 07) we lacked adequate material of true P. affinis, 

 though we had large series of P. affinis ncgledus Ridgway, and Dr. 

 Phillips considered the Armstrong skins to represent the northern 

 form as distinguished from neglectus. In reality the Tamaulipas 

 bird is very distinct, while affiinis and neglectus are exceedingly close 

 forms, hardly distinguishable except in long series. 



MusciSAXicoLA MACLOViAXA MEXTALis d'Orbiguy and Lafresnaye. 



Muscisa-xicola mentaJis d'Orb. and Lafr., Mag. zool. Syn. avium, 

 1837, p. OG ("Habit. Cobija, in Bolivia; Arica, atque Patagonia"). 



Cotype (?). — M. C. Z. 77,316, Lafr. coll. 4,599. 



Muscisaxicola albimentum Lafresnaye, Rev. et mag. zool., 1855, 

 p. 61 (tvT)e-locality not stated, label gives "Bolivia et Patagonia"). 



Type^— M. C. Z. 77, 323, Lafr. coll. 4,607. 



In addition to the cotype (?) of M. mentalis and the type of M. albi- 



