Errata et Addenda. 



Page 9, Gen. X. — After auricularis insert " Uaudin." 



Page 28, No.56b. — After this article insert : 



56c. Geranospizias ccsridescens livens Bangs & Pcnard, N.W. Mexico. 

 Proc. Biol. Soc, Wash., xxxiv., p. 89 (1921). 

 {Alamos, State of Sonora. type in M.C.Z., Harvard.] 



Wing (J 334, § 349 mm. ; paler, not blackish, but 

 neutral grey ; larger and darker than G. c. caru- 

 lescens. 



Page 33, No. 646.- — To distribution add : " probably breeding N. of United States." 

 For discription read : " much darker grey (blacker) and generally fogged with 

 blackish. Juv. : very brownish, with the wliites dull and rather ruddy." 



Page 37, No. 71.— For wing measurement read ^ 145-155, $ 180-182 mm. 



Page 90, No. 156a. — For this article read : 



Asturina plagiata micrus Miller and Griscom, Am. Nicaragua, 

 Mus. Novitates, No. 25, p. 4 (Dec. 7, 1921). [Chin- Costa Rica. 

 andega, Nicaragua, type in Am. Mus. N.H.] 



Page 93, No. i57i. — For this article read : 



Rupornis magnirostris pucherani J. & E. Verr.. Rev. 

 et Mag. de Zool., 1855, p. 350. [Paraguay, apud 

 Chubb.] 



Page 103, No. 175. — For " Chauchamayo " read " Chanchamayo." 



Page 165, No. 263. — I am unable to accept Ictinia plumbea vagans recently described 

 by Miller & Griscom (Am. Mus. Nov., No. 25, p. 5, Dec. 7, 192 1 — Pena Blanca, 

 Nicaragua), as it is based on larger size only and has not a definite range. It 

 is presumed to breed in both Central America and S. America. My smallest 

 bird is from Guatemala (wing 287 mm.) and my largest pair from Ecuador 

 (wing 293-300 mm.). The examples with wings of 300-319 mm. are not confined 

 to Central America, and the largest bird measured by Miller & Griscom is from 

 Matto Grosso. Most of the (J examples from the latter locality are placed under 

 the typical form, and most of the ^ examples under vagans ! 



Page 164, No. 262b. — Miller & Griscom [cit. supra, p. 13) think Chubb's characters 

 are insufficient to distinguish leoncs from rueridensis Swann. In an errata slip 

 they retain leoncB as the older name, to include the Venezuelan ind Guianan 

 birds. I think, however, that Nicaraguan birds are undoubtedly larger than 

 Venezuelan and that both races may stand, leonce being the name for the Central 

 American race. 



