HYDKOPSALTS. SCOTORNIS. MACRODIPIERYX. 01 



Hydropsalis climacocercus, Tsch. 



ITydropsalis trifurcata, Scl. # Salv. P. Z. S. 1866, p. 193. 



Hydropsalis climacocercus, Hartert, Cat. Birds B. M. xvi. p. COO (1892) ; 



Nehrk. Kat. Eiersamml. p. 157 (1899) ; von Ihering, Rev. Mus. 



Paidista, iv. p. 256 (1900) ; Sharpe, Hand-l. ii. p. 82 (1900). 



The egg of the Ladder-tailed Nightjar in the Collection is perfectly 

 elliptical in shape and almost entirely devoid of gloss. It is of a 

 rich cream -colour, marked all over with specks, spots and short 

 irregular lines of lavender-grey and dark hrown. It measures 

 1-01 by -8. 



1. Ucayali River, Amazonia Crowley Bequest. 



(E. Bartlett: Tristram Coll.). 



Genus SCOTORNIS, Swains. 



Scotornis climacnrus * ( Vieill.). 



Caprinmlgus climacnrus, Thien. Fortpflanz. ges. Vog. tab. xlii. fig. 19 



(1845-54); Koenia-Warth. J. f. O. 1868, p. 377. 

 Scotornis longicauda, Hartert # Kutter, J. f. O. 1886, p. 591. 

 Scotornis climacurus, Hartert, Cat. Birds B. M. xvi. p. 596 (1892); 



Nehrk. Kat. Eiersamml. p. 157 (1899) ; Sharpe, Hand-l. ii. p. 82 



(1900). 



The eggs of the African Long- tailed Nightjar are elliptical in shape 

 and slightly glossy. They are cream-coloured, sometimes tinged 

 with pink, profusely smeared and blotched with grey or lavender and 

 two shades of brown. They measure from '97 to 1 04 in length, 

 and from '71 to -78 in breadth. 



2. Near Fashoda, White Nile, . R. McD. Hawker. Esq. [P.1 



llth April. 



2. Near Fashoda, llth April. R. McD. Hawker, Esq. [P.]. 



2. Near Fashoda, 7th May. R. McD. Hawker, Esq. [P.]. 



Genus MACRODIPTERYX, Swain. 

 Macrodipteryx longipennis (SJiaw). 



Macrodipteryx long-ipennis, Reichen. J.f. 0. 1891, p. 381 ; Sharpe, Hand-l. 



ii. p. 82 (1900). 

 Macrodipteryx nmcrodipterus, Hartert, Cat. Birds B. M. xvi. p. 594 



(1892) j" Nehrk. Kat. Eiersamml. p. 156 (1899). 



The eggs of the Standard-winged Nightjar are of a blunt oval or 

 elliptical shape, and exhibit a considerable amount of gloss. They 

 are of a pinkish stone- colour, clouded and mottled with pale brown 

 and lavender- grey. Four examples measure respectively: 1'04 by 

 77 ; 1 by -75 ; 1 by '73 ; -97 by -72. 



* Mr. Hawker procured in one and the same locality birds, some of which 

 are referable to the light and others to the dark form of this Nightjar. 



