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4 

EXPEDITION TO SOKOTRA: NEW SPECIES. 3 
(4) Caprimulgus jonesi. 
Adult male :—Nearest to C. nubicus from Arabia, Palestine, and North- 
East Africa, but at once distinguished by having the ground colour of the 
upper parts clear grey instead of sandy brown, and the markings on the top 
of the head and on the scapulars rufous and buff instead of whitish buff. The 
whole of the black markings on the upper parts are, moreover, much coarser. 
Total length (measured in the flesh), 9 inches; culmen, 0-4; wing, 6:1 ; 
tuil, 4:2; tarsus, 0°75. 
Habitat. Dimichiro Valley, Garieh Plain, E. Sokotra. 
This species has been named in honour of M. P. Jones, Esq., J.P., 
Liverpool, Chairman of the Museums Sub-Committee. 
(5) Phalacrocorax nigrogularis. 
A very distinct species belonging to the group with fourteen tail feathers, 
and with the culmen exceeding 1°5 inch in length from the feathers on the 
forehead to the tip of the bill. 
Adult male :—General colour above and below black with a slight gloss, 
the wing-coverts and scapulars tinged with bronze and with a black spot at 
the extremity. The throat and hind neck ornamented with minute scattered 
white plumes, indicating full breeding plumage. Iris dark emerald green ; 
pouch and naked skin in front of and surrounding the eye dirty black ; bill 
‘greyish black, paler horn-colour towards the tip and on the terminal half of 
the latericorn ; a greenish band along the basal half of the mandible ; legs 
and feet black, webs browner. 
Total length (measured in the flesh), 30°5 inches; culmen, 3-0; wing, 
11°5 ; tail, 4°3 ; tarsus, 2°55. 
Habitat. Coasts of Sokotra, and of Abd-el-Kuri. 
(6) Passer hemileucus. 
Adult male :—Most nearly allied to P. insularis, but much smaller and 
very much paler, especially on the under parts, which are nearly pure white. 
The black patch on the throat is much reduced, as in P. pyrrhonotus, which 
species it closely resembles in plumage, but from this latter it may at once 
be distinguished by the much longer and stouter black bill. Iris brown ; bill 
black ; legs and feet fleshy horn-colour. 
Adult female :—Most nearly allied to the female of P. insularis, but much 
smaller and very much paler, the under parts being nearly pure white and 
the dusky patch down the middle of the throat absent. 
Male :—TYotal length (measured in the flesh), 5-4 inches ; culmen, 0°45 ; 
wing, 2°9; tail, 2-2; tarsus, 0-7. 
Female :—TYotal length (measured in the flesh), 5-4 inches; culmen, 0°48 ; 
wing, 2°8; tail, 2:1; tarsus, 0°7. 
Habitat. Island of Abd-el-Kuri. 
(7) Motacilla forwoodi. 
Adult female in winter plumage :—Most nearly allied to M. alba in full 
summer plumage, the top of the head and the entire chin, throat, and fore- 
neck being deep black, but the forehead is dark grey like the back and rest of 
the upper parts, instead of pure white. Iris dark brown; bill and legs black. 
Total length, 7 inches ; culmen, 0°45; wing, 3:3; tail, 3-4; tarsus, 0°85. 
Habitat. Island of Abd-el- Kuri. 
This beautiful species is named in compliment to Sir William Forwood 
of Bromborough Hall, Cheshire, Chairman of the General Committee which 
administers the Museums, Libraries, and Art Gallery of the City of Liverpool. 
