HYDT.OPSALIS. SCOTOEMS. MACRODII'TEKYX. 01 



Hydropsalis cliniacocercus, T&ch. 



Ilydropsalis trifurcata, Scl. &■ Sah: P. Z. S. 1866, p. 193. 



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



Nehrk. Kat. Eiersamml. p. ]o7 (1899); von Iherinq, Bei\ Mus. 



Faulista, iv. p. 256 (1900) ; Shnrpe, 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-colonr, marked all over with specks, spots and short 

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

 1-01 by -8. 



1. Fcavali River, Amazonia Crowley I3equest. 



(E. Barilett : Trii^train CvIl). 



Genus SCOTORNIS, Swains. 



Scotornis climacurus * {VleiU.). 



Caprimulgus climacurus, Thien. Fortpfianz. qes. J^off. tab. xlii. fig. 19 



(1845-54); Koeni(i-Warih. J. f. 6. 1868," p. 877. 

 Scotornis longicauda, Hartert i( 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, Iland-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.], 



11th April. 

 2. Near Fashoda, 11th April. R. McD. Hawker, Esq. [P.]. 



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



Genus MACHODIPTERYX, Swains. 

 Macrodipteryx longipennis (Shatv). 



Macrodiptervx loniiipennis, Reichcn. J.f. O. 1891, p. 381 ; Sharpe, Hand-L 



ii. p. 82 (1900). 

 !^[acrodipteryx niacrodipterus, Hartert, Cat. Birds B. M. xvi. p. 594 



(1892) f 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 Niglitjar. 



