116 BRITISH GUYANA BIRDS EGGS. 
NOTE XI. 
ON EGGS OF SOME BRITISH GUYANA BIRDS *) 
BY 
Dr. C. G. YOUNG. 
1. Troglodytes furvus (Gm.,). 
Wren. 
They build their nests, of straw and feathers, on the 
beams about houses, and in empty bottles and drain-pipes 
which are hung up under the verandah-roof for their 
special use. 
They lay four eggs. 
The egg — 18 mm. by 12 mm.— is white, thickly 
marked with red-brown. 
They hatch from January to June. — One egg (N°. 20). 
2. Tanagra episcopus L. 
Blue Sackie. 
The nest is open, like a cup, and is composed of grass 
lined with bamboo-leaves and the thread from the cocoa- 
nut-palm: sometimes small sticks and pieces of cotton are 
used to make up the outside. They build on low trees or 
in shrubs. 
They lay three eggs. 
The egg — 25 mm. by 18 mm. — is a light blue-grey 
covered over with dark and light brown marks and spots; 
1) This Note may be considered a continuation of a previous paper of 
this kind (N. L. M. 1889, p. 145) wherein Dr. Young described nests and eggs 
of a series of British Guyana Birds. The eggs mentioned in the present Note 
under the various numbers, as well as some birds skins belonging to these eggs, 
are all presented by that Author to the Leyden Museum. J. BütrikoreR. 
Notes froin the Leyden Museum, Vol. XV. 
