716 Messrs. Sclater and Mackworth-Praed on [Ibis, 



Riparia cincta cincta. 



Hirundo cincta Bodd. Tabl. PI. Eiil. 1783, p. 45 : Cape of 

 Good Hope (ex Daubent.)- 



Riparia cincta (Bodd.) ; Reich w. V. A. ii. p. 384. 



[B. coll.] 2 Moiigalla, summer. 



These birds appear to be somewiiat intermediate between 

 tlie typical race of South Africa and R. c. erlangeri Reichw. 

 from Shoa, which only differs in its larger size. The wing- 

 measurements of our birds are 132 and 136 mm. R. c. cincta 

 is stated by Reichenow to measure 126-131 mm., and 

 R. c. erlangeri 135-146 mm. 



Riparia obsoleta. 



Cotyle ubsoleta Cabanis, Mus. Hein. i. 1850, p. 50 : N.E. 

 Africa. 



Riparia obsoleta obsoleta (Cab.) ; Hartert, Vog. pal. Faun, 

 p. 816. 



Ptyonopruyne obsoleta (Cab.) ; Butler, Ibis, 1908, p. 238. 



[B. coll.] 1 Erkowit Mch. R.S. 



[C. & L. coll.] 2 Sinkat Mch. R.S. 



These birds are not as dark as R. pusilla of Zedlitz from 

 Eritrea, or as R. arabica Reichenow from southern Arabia. 

 On the other hand, they are slightly darker than some of 

 the Egyptian birds, and their relations to each other and to 

 the fuligula and rupestris groups are rather obscure. The 

 simplest plan is either to regard R. obsoleta as a distinct 

 species or group them all together as races of R. rupestris. 

 We think the former plan most satisfactory at present, 

 until we know more of their inter-relations. 



Riparia fuligula rufigula. 



Cotile rujigula Fischer & Reichenow, J. f. O. 1884, p: 53 : 

 Naiwascha, B.E.A. 



Riparia rufigula (Fisch. & Reichw.) ; Reichenow, V. A. ii. 

 p. 400. 



[B. coll.] 1 Kajo Kaji Mch. L.E. 



This bird does not appear to have been previously obtained 



