94 BULLETIN : MUSEUM OF COMPARATIVE ZOOLOGY. 



ARDEIDAE. 

 4. Butorides striata (Linne). 



Three specimens, June 24 to July 2, all in the striped immature plumage. 

 They agree minutely with a skin from Surinam in corresponding plumage 

 with which we have compared them. 



FALCONIDAE. 

 5. Urubitinga subtilis, sp. nov. 

 Type. - Coll. E. A. & O. Bangs, No. 14,001, adult ^, Gorgona Island, July 1, 1904. 



Two specimens, adult J', July 1, 1904; juv. J', June 19, 1904. 



Characters. — Somewhat similar to U. anthracina (Licht.), but smaller (wing 

 nearly two inches shorter) ; white central tail band and terminal margin nar- 

 rower; in color the new form differs from U. anthracina in having the ground 

 color of the broad mottled band extending across the secondaries, bright cinna- 

 mon rufous, this band in true U. anthracina having the ground color dull 

 grayish only tinged with rufous on the inner edges of some of the feathers; 

 the young skin has the wings much marked and spotted with cinnamon rufous 

 — much more so than in any of the many specimens of XJ. anthracina we have 

 examined. 



RALLIDAE. 

 6. lonornis martinica (LixNfe). 



One adult ^, June 23. 



This specimen show's no peculiarities. It agrees exactly with skins from 

 various localities in North and Middle America. 



CUCULIDAE. 

 7. Coccyzus melanocoryphus Vieill. 

 One adult 9; June 23. This specimen is perfectly typical of the species. 



TROCHILIDAE. 



8. Amizilis tzaeatl (Llave). 



Three specimens, all females, June 24 to July 2. These are not to be dis- 

 tinguished from continental specimens. 



