136 BULLETIN 15 3, UNITED STATES NATIONAL MUSEUM 



these parts pale buffy orange. The dimensions of the two specimens 

 are as follows : Male — wing, 80; tail, 54; culmen from base, IT; tarsus, 

 23 mm. Female — wing, 78.5 ; tail, 55 ; culmen from base, 16 ; tarsus, 

 22 mm. 



OENANTHE ISABELLINA (Temminck) 



Saxicola isabelUna Temminck, Nouveau recueil de planches coloriees d'oiseaux, 



etc., livr. 79, pi. 472, fig. 1, 1829 : Nubia. 

 Specimens collected: 



1 female, Djibouti, French Somaliland, November 23, 1911. 



7 males, 9 females, Dire Daoua, Ethiopia, November 29-December 20, 1911. 



1 female, Gada Bourca, Ethiopia, December 26, 1911. 



1 mile, Adis Abeba, Ethiopia, January 14, 1912. 



1 male, 2 females, Hawash River, Ethiopia, February 6-9, 1912. 



1 female, Serre, Ethiopia, February 14, 1912. 



1 female, Loco, Ethiopia, March 13, 1912. 



The isabelline chat is a regular and common winter visitor 

 throughout the regions traversed by the Frick expedition. The 

 Massai steppes appear to be the southern limit of its winter range. 



These birds undergo a complete molt while still in their European 

 and Asiatic breeding quarters, and only a very incomplete ecdysis, 

 involving some of the body feathers, takes place in the winter range 

 in Africa. Occasionally, however, the postnuptial molt is delayed 

 until after the bird has arrived in Africa. Thus, a male taken at 

 Dire Daoua on December 10 is renewing its rectrices. 



OENANTHE BOTTAE FRENATA (Heuglin) 



Sfixicola frenata Heuglin, Journ. fiir Orn., 1869, p. 158 : Mensa, Abyssinian 



Highlands. 

 Specimens collected: 



2 males, Adis Abeba, Ethiopia, January 10-11, 1912. 



1 male, near Saleish, Ethiopia, January 18, 1912. 



2 males, 2 females, Arussi Plateau, 8,500-10,500 feet, Ethiopia, February 22- 

 27, 1912. 



2 males, Cofali, Ethiopia, March 2, 1912. 



Soft parts : Iris grayish brown ; bill and feet black. 



Sclater *^ has straightened out the complicated synonymy of the 

 forms of Oenanthe bottae, and the arrangement given by him *^ 

 appears to be correct. 



The present form occurs in the higlilands of Ethiopia from Bogos- 

 land to Djamdjam, Shoa, and Arussi-Gallaland. Blanford *^ met 

 with this bird "on the very highest portions of the Wadela Plateau, 

 near Saintora and Gazoo, at an elevation of 10,500 feet above the sea ; 

 there it abounded. Von Heuglin states that he has seen it at a 

 much lower elevation also." 



« Bull. Brit. Orn. Club, vol. 49, pp. 17-19, 1928. 



*■ Systema avium ^asthiopicarum, pt. 2, pp. 455-456, 1930. 



*'' Observations on the geology and zoology of Abyssinia, etc., p. 362, 1870. 



