THE THREE-T0P:D SAND-C;ROrSK. 



spotted, a set of pale purplish marks beneath the surface of the 

 shell underlying the brown surface spots. 



All the Sand-Grouse are birds with immense powers of 



Fig. 4. — Sternum of/', aicnatus. 



flight, able to traverse great distances in a remarkably short 

 space of time. 



The majority of the species are migratory, some of ihem 

 wandering thousands of miles. 



THE SAND-GROUSE. FAMILY PTEROCLID^. 



THE THREE-TOED SAND-GROUSE. GENUS SYRRHAPTES. 

 SyrrJiaptes^ Illiger, Prodr. p. 243 (181 1). 

 Type, 6". paradoxus (Pall.). 

 This genus is distinguished from the rest of the Sand- 

 Grouse by the want of the hind-toe. The other toes, as well 

 as the feet, are entirely covered with feathers. 



I. PALLAS' THREE-TOED SAND-GROUSE. SYRRHAPTES 

 PARADOXUS. 



Tetrao paradoxa, Pall. Reis. Russ. Reichs. ii. p. 712, pi. 1'. 

 (1773)- 



B 2 



