ADDENDA. 



(ESTRELATA HASITATA (Kuhl). 

 317. Black-capped Petrel. (98) 



Top of head, and upper parts generally, except upper tail coverts, uniform 

 dusky, the back and scapulars paler, with perceptibly still paler terminal 

 margins to the feathers; upper tail coverts, basal lialf (apjjroximately) of tail, 

 head and neck, except top of the former (and sometimes the hind neck also), 

 together with lower parts, including axillars and under wing coverts, pure 

 white; the sides of the chest sometimes with a brownish-gray wash. Lengtli, 

 14-16 inches; wing, 11.40-11.75; tail, 4.80-5.30. 



Hab. — Middle Atlantic, straggling to coasts of North America and I'airo])^. 



On the 30th of October, 1893, the dead body of a Black-capped 

 Petrel was picked up on the shore of the Island, at Toronto, and 

 brought to Mr. Spanner's shop, where it was seen by Mi'. K. C. 

 Mcllwraith and others, and correctly identified. 



This is a bird which rears its young on the lonely islands of the 

 sea, and, except in such places, is rarely seen on land anywhere. The 

 individual now referred to was, from some unknown cause, (mtirely 

 out of its reckoning, and most likely died for lack of suitable nour- 

 ishment. 



