7b PTEEOCLIDID^E. 



pinkish brown, are rather closely deposited over the whole shell. 

 It measures 1'66 by 1*15. 



1. Jeenpur, Sind, 10th July. Hume Coll. 



Pteroclidurus pyrenaicus (Briss.). 



Pterocles alchata, Thien. Fortpflanz. qes. Voy. p. 48, tab. x. fig. 2 a, b 

 (1845-54) ; Baedeker, EierEur. V'6g. tab. 21. fig. 8 (1855-63) : Salvin, 

 Ibis, 1859, p. 352 ; Tristram, Ibis, 1860, p. 70 ; Bree, Birds 'Eur. iii. 

 p. 221, pi. (1867) ; 2nd ed. iv. p. 131, pi. (1875) ; Sounders, 

 Ibis, 1871, p. 223 ; Dresser, Birds Eur. vii. p. 67 (1874). 



Pteroclurus pyrenaicus, Grant, Cat. Birds B. M. xxii. p. 9 (1893). 



Pteroclurus alchata, Irby, Orn. Sir. Gibr. 2nd ed. p. 236 (1895). 



Pteroclidurus pyrenaicus, Sharpe, Hand-l. i. p. 50 (1899). 



The eggs of the Western Pin-tailed Sand-Grouse may be separated 

 from those of all the other species of Sand-Grouse by their bold 

 and brilliant coloration. They vary from a pale creamy buff to 

 a fairly dark buff colour. The surface-markings consist of spots 

 and blotches of rather dark reddish brown. These are, as a rule, 

 very distinct and well-defined, but occasionally they are confluent, 

 and are always very evenly distributed over the egg. The 

 specimens in the Collecton measure from 1'65 to 1'96 in length, 

 and from 1*15 to 1/3 in breadth. 



2. Seville, Spain (H. Saunders). Seebohm Coll. 



3. Seville (H. S.). Seebohm Coll. 



2. Seville (U.S.).. Seebohm Coll. 



3. Arganda, Spain (H. S.). Seebohm Coll. 

 2. Malaga, Spain (H. S.). Seebohm Coll. 

 2. Seville (L. H. Irby). Seebohm Coll. 



1. Spain. Gould Coll. 



2. South Spain. Lord Lilford [P.]. 



5. Tunis. Louis Eraser, Esq. [C.]. 



1. Harakta, Algeria, 10th June. Gould Coll. 



2. Harakta, 10th J une ( W. H. Simpson). Salvin-Godman Coll. 



3. Harakta, 10th June ( W. H. S.}. Salvin-Godman Coll. 

 3. Harakta, 10th June ( W. H. S.). Salvin-Godman Coll. 

 1. Plains of Roumila. 21st May ( W. Salvin-Godman Coll. 



H. S.). 



Pteroclidurus namaquus (Gm.). 

 (Plate VIII. figs. 5 & 10.) 



Pterocles namaqua, Sharpens ed. Layard, Birds S. Africa, p. 574 



(1875-84). 



Pteroclurus namaqua, Grant, Cat. Birds B. M. xxii. p. 10 (1893). 

 Pteroclidurus namaquus, Sharpe, Hand-l. i. p. 50 (1899). 



The two eggs of the Namaqua Pin-tailed Sand-Grouse in the 

 Collection differ much from each oth,?r in colour, but they can be 

 matched by eggs of the next species, P. exustus. They measure 

 respectively: 1-35 by -fc6 ; 1-33 by '95. 



2. South Africa. E. L. Layard, Esq. [P.]. 



