JIYDKOl'SAMS. SCOTOliXrS.— MACROIUrXKnYX. 01 



Hydropsalis climacocercus, Tach. 



ll.vdropsalis tiifurcata, Scl. &• Salv. P. Z. S. 1866, p. 193. 



ll}'drops!ilis climacocercus, Hartert, Cat. liirds B. M. xvi. p. COO (1892) ; 



Nehrk. Knf. Eievscnnml. p. 157 (1899) ; vun Iherinq, liec. ]\Jus. 



J'aulista, iv. p. 256 (1900) ; Sharpe, Hand-l. li. p. 82 (1900). 



The ej^g; of the Ladder-tailed Xightjar 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 brown. It measures 

 1-01 by -8. 



1. Ucavali Uiver, Amazonia C'rowlev Bequest. 



(E. BartlM : 'J'ristnun Coll.). 



Genus SCOTORNIS, Swains. 

 Scotornis climacurus * (VieiJl.). 



Capriniulgus climacurus, T/iicn. Fortpflnnz. qes. Tog. tab. xlii. fio-. 19 

 (1845-54); Koeniff-JJ'urfh. J. f. 6. 1868,'p. 377. ° 



Scotornis lougicauda, Hartert ^- A'uttcr. J. f. O. 1886, p. 591. 



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

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

 (1900). 



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

 and slightly gloss}'. 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 '"S in breadth. 



2. Near Fashoda, White Nile, R. McD. Hawker, Esq. fP.]. 



11th April. 

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



2. Near Fashoda, 7th May. i;. McD. Hawker, Esq. | P.]. 



Genus MACRODIPTERYX, Sivains. 

 Macrodipteryx longipennis (Shatc). 



Macrodiptervx longipennis, Reichen. J.f. 0. 1891, p. 381 ; Sharpe, lland-l 



ii. p. 82 (1900). 

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



(1892) ;" JSehrk. Kat. Eiersumml. 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. Pour 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 wliicli 

 are referuble to the light and others tu the dark form ol tliia Nightjar. 



