66 TROGLODYTID^l. 



The two eggs of the Chestnut-backed Cactus-Wren in the Collection 

 are of a regular oval form and exhibit very little gloss. They are 

 of a creamy-white colour, spotted and mottled all over with olive- 

 brown and lavender, the markings forming an indistinct cap at the 

 broad end. One of them measures -83 by -62; the other is unfor- 

 tunately too much damaged to be accurately measured. 



2. Chuacus, Guatemala (O. Salvin # Salvin-Godman Coll. 

 F. D. Godman). 



Heleodytes couesi (Sharpe). 

 (Plate V. fig. 1.) 



Campylorhvnchus brunneicapillus, Baird, Brewer Sf Ridgw. N. Amer. 



Birds, i. p. 132 (1874); Coues, Birds Colorado Vail. 'p. 156 (1878) ; 



Salv. # Godm. Biol. Centr.-Amer., Aves, i. p. 67 (1880). 

 Campy lorhynch us couesi, Sharpe, Cat. Birds B. M. vi. p. 196 (1881) ; 



Nehrk. Kat. Eiersamml. p. 45 (1899). 

 Heleodytes couesi, Sharpe, Hand-L iv. p. 74 (1903). 



The two eggs of Coues's Cactus-Wren in the Collection are of a 

 regular oval shape and slightly glossy. They are of a pinkish- white 

 colour, densely speckled and mottled all over with brownish pink, 

 the markings forming an ill-defined zone round the broad end. 

 Two examples measure respectively : '9 by '65 ; '86 by '63. 



2. Tucson, Arizona (Henshaiv Coll.). Salvin-Godman Coll. 



Heleodytes affinis (Xantus). 



Campylorhynchus affinis, Xantus, Proc. Acad. Philad. 1859, p. 298 : 

 Baird, Brewer $ Ridgw. N. Amer. Birds, i. p. 133 (1874). 



Campylorhynchus brunneicapillus, Sharpe, Cat. Birds B. M. vi. p. 197 

 (1881) [part.]. 



Heleodytes affinis, Sharpe, Hand-L iv. p. 75 (1903). 



The eggs of Xantus's Cactus-Wren vary from a narrow to a broad 

 oval shape and are more or less glossy. They are of a creamy-white 

 ground-colour, in some cases densely mottled, the ground-colour 

 being completely hidden, in others speckled and spotted, and in 

 others again speckled and blotched, with brownish pink and lilac. 

 The markings are of a somewhat darker colour at the broad end, and 

 generally form a zone or cap at that part. Specimens measure from 

 9 to 1-1 in length, and from -65 to '72 in breadth. 



1. California (Smiths. Inst. : Tristram Crowley Bequest. 



Coll.). 



3. San Diego Co., California, 4th April. Crowley Bequest. 



7. San Diego Co., California, 5th April. W. Radcliffe Saunders, Esq. 



4. San Antonio, California, 2nd May. E. Lacy, Esq. [P.]. 



2. Cape St. Lucas, California (J. Salvin-Godman Coll. 



Xantus). 



