52 BULLETIN 153, UNITED STATES NATIONAL MUSEUM 



RIP ARIA RIP ARIA RIP ARIA (Linnaeus) 

 Hirunao riparia Linnaeus. Systema naturae, ed. 10, p. 192, 1758: Europe, re- 



stricted type locality, Sweden. 

 Specimens collected: 



1 unsexed, Loco, Ethiopia, March 14, 191i 

 1 unsexed. Black Lake Abaya, Ethiopia, March 24, 1912. 

 Soft parts: Iris brown; bill black (inside of mouth yellow) ; feet 



some 20 birds from Europe and Africa and may possibly be nearer 

 ZfJoo^^^s than to typical ri.aria. Van Someren" records 12 

 ^ecimens from various localities in Kenya f'-y /K'^"'™;^^ ^^ 

 gori, Nakuru, Naivasha, and Nairobi) as fuseooonan^ Un ortu 

 natelv I have seen no authentic fmcocoUans material, and, masmuch 

 "s tl rdifcence between the present two birds and typical European 

 Id mlrtins is not great, I prefer to consider them as eKtreme 



^''TtCrltclimidhoffen described fu^eoeollaris from migrant 

 bi«ls'o eeted at Castelnuovo, southern Dalmat.a" and admitted 

 that he did not know where the breeding range might be. Van 

 Soiiieren found that his fusooconari. agreed with birds from Turke 

 Stan and concluded that they were probably migi-ants from that 

 country It does not seem highly probable that birds would migrate 

 from Turkestan to eastern Africa, and I feel that van Somerens 

 identification must be taken with some mental «Be"at'on. 



This sand martin appears to be uncommon in ^»*^^ f^°^|°™ 

 Ethiopia. Antinori did not meet with it in Shoa; neither did Neu 

 mann and von Erlanger found it but once. In Kenya Cx,lony 

 Record's are very numerous, but the bird seems not to have been found 

 rnywhere in Somaliland, Jubaland, or southeastern Go.lM-"^. 



Mrd from Black Lake Abaya is in molt in the wings and tail 



the other s through molting and is in fresh plumage. According 



wS,- the'earliest date for a specimen with moltmg wing 



s 1^ December, which indicates that the birds do not begin their 



ecdysis until some time after arriving in their winter home. 



The E<.yptian form, shdleyi, characterized by its small size (wings 

 90 97 mm) is almost nonmigratory but has also been taken m our 

 region. S later and Mackworth-Praed »« record >* /™>" Khai'^um 

 and from near Eenk in the Sudan. It is known also from Eiitrea 

 and Ethiopia. 



»3 Nov. Zool., vol. 29, p. 89, 1922. 



■HOrn. Jahrb., vol. 23, p. 216, 1912 



«^ A practical handbook of British birds, vol. 1, p. 514, IJ.u. 



»8Ibis, 1918, pp. 713-714. 



