26 bulletin: museum of comparative zoology. 



Measurements.— Type, adult 9; wing, 101; tail, 80; tarsus, 23; 

 exposed culmen, 26. Topotype, M. C. Z. 124,523, adult & ; wdng, 109; 

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



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

 fresnaye, Lt. Colonel d'artillerie en retraite, to whom we are indebted 

 for much assistance in bringing together material for a sketch of the 

 life of his illustrious father. 



PiCOLAPTES AFFINIS LIGNICIDA, Subsp. nOV. 



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

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



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

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

 head much grayer, less bro\\Tiish; under parts paler, grayer, and 

 wholly lacking the rich brown (raw umber) coloring of the under parts 

 in C. affinis affinis. Size about the same. 



Measurements.— Type, adult &; wing, 108; tail, 95; tarsus, 21; 

 exposed culmen, 28. Topotypc, 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 Victoria. At the 

 time Dr. J. C. Phillips reported on the Armstrong Collection (x\uk, 

 January, 1911, 28, p. 67) 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 affinis and neglectus are exceedingly close 

 forms, hardly distinguishable except in long series. 



Muscisaxicola macloviana mentalis d'Orbigny and Lafresnaye. 



Muscisaxicola mentalis d'Orb. and Lafr., Mag. zool. Syn. avium, 

 1837, p. 66 ("Habit. Cobija, in Boli\qa; Arica, atque Patagonia"). 



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



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

 p. 61 (type-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- 



