RENDAHL, BIRDS FROM THE PEARL ISLANDS. 13 



Fam. Ardeidae. 

 5. Herodias egretta (Wilson). 



No former statements from the Pearl Islands. 



BovALLius' Collection: 1 skull, Chepillo Island, off the 

 mouth of Bayano- or Cliepo River, Bay of Panama, no date. 



Dr. BovALLius narrates in the previously mentioned 

 populär account of his travels, that great flocks of the Egret 

 were observed on B a y o n e t a, fishing at low tide on the 

 drained shore. 



He also states, that in Chepillo Island he met with enor- 

 mous flocks of Egrets, whicli had occupied the desert island. 



Unfortunately there are no specimens brought from 

 Bayoneta, but certainly the observed birds belonged to the 

 species in question and not, as possibly could be suspected, 

 to the Snowy Egret, for the latter is by Bovallius labelled 

 as »Ardea», while he has correctly identified the formeras »He- 

 rodias egretta». 



6. Egretta candidissima candidissima (Gmelin). 



No former statements from the Pearl Islands. 

 Bovallius' Collection: 1 <^, Casaya, April 13. 

 The single specimen of the Snowy Egret collected by 

 Dr. Bovallius is a male in early breeding-plumage. 

 The measurements are as follows: 

 wing 267, tail 96, culmen 90, tarsus 101 mm. 



7. Nyctanassa violacea (Linné). 



Nyctanassa violacea Bångs, Auk. XVIII, 1901. 25 (San Miguel) — Sal vin and 

 GoDMAN, Biol. Centr.- Am. Aves III, 1901, 174 (ref.) — Thayer and 

 Bångs, Bull. Mus. Comp. Zoöl. XLVI, 1905, 141 (San Miguel; Saboga). 



Bovallius' Collection: 1 J", Viveros, April 7 (1 skull, 

 also Viveros, no date). 



The Yellow-crowned Night Heron of the Pearl Islands 

 seems to conform entirely with the typical characters of this 

 species. 



The measurements of the present specimen, a male in 

 beeding-plumage, are as follows: 



wing 297, tail 116, culmen 78, tarsus 91,5 mm. 



