48 BULLETIN 15 3, UNITED STATES NATIONAL MUSEUM 



Immature birds have relatively shorter and broader outer rectrices ; 

 duller, less bluish black on the upperparts; very pale rumps and 

 underi)arts (as pale as in some specimens of melanocrissa) ; and a 

 medially interrupted pectoral band of dusky spots. 



The breeding season in the northern part of its range is in July. 

 Erlanger found it nesting on July 7 at the Hakaki River, near Adis 

 Abeba, and obtained an Qgg on that date. The nests are mud struc- 

 tures with a half-tubular entrance. 



HIRUNDO SENEGALENSIS SENEGALENSIS Linnaeus 



Hirundo senegalensis Linnaeus, Syst. Nat., ed. 12, p. 345, 1766: Senegal. 

 Specimens collected: 



2 males, 3 females, Gato River near Gardula, Ethiopia, April 1-8, 1912. 



1 male, 20 miles above mouth of Thika River, Kenya Colony, August 27, 

 1912. 



The geographic variations of this swallow are somewhat obscured 

 by the extent of individual variation throughout its range. Four 

 races have been currently recognized, as follows : 



1. 3. s. senegalensis: Senegal eastward across the Upper Guinean 

 savannahs through Darfur, Kordofan, the northeastern Belgian 

 Congo, Uganda, and the "Lado Enclave" to Shoa; southward in the 

 western part of its range to Loango. 



2. H. s. saturatior: Said by Bannerman ®^ to differ from the typical 

 form in being much deeper chestnut on the entire underparts. The 

 range is given as the coastal regions of the Gold Coast. Gylden- 

 stolpe ^* has questioned the validity of satwatior, because in Uganda, 

 Kenya Colony, and Ethiopia the birds (typical senegalensis) are 

 variable in color, although averaging darker than Senegambian speci- 

 mens. He asks, since there is so much individual variation in these 

 birds "why should we not regard the different shade of chestnut 

 found in birds from Senegal and from the Gold Coast merely as an 

 individual variation ? To me it seems highly possible that the coastal 

 districts of the Gold Coast * * * are inhabited by the same race 

 as that found in Senegal. The latter country, has, however, a drier 

 climate than the Gold Coast, a fact which * * * must be taken 

 into consideration." It should be noted that when describing satur- 

 atior^ Bannerman stated that East African (Ugandan, Kenya Colony, 

 and Ethiopian) birds are "certainly rather darker than typical ex- 

 amples, but are not nearly so dark as H. s. satv/ratiory I have seen 

 no specimens of saturatior^ but recognize it tentatively as valid. 



3. H. s. Qiionteiri: Differs from the typical race in having well- 

 developed white sj)ots on the three outer rectrices. This is the 



83 Bull. Brit. Orn. Club, vol. 43, p. 85, 1923. 



8* Kongl. Svenska Vet.-Akad. Ilandl., 1924, pp. 228-229. 



