BIRDS OF ETHIOPLl AND KENYA COLONY 193 



from Hor, June 30, is darker, more olivaceous than fully adult birds, 

 and has very narrow buffy edges to the feathers of the upper parts, 

 and differs from every other specimen in the collection in having the 

 entire throat heavily striped with black; it is, in fact, exactly like 

 the figure of Glareola Tnelanoptera {—nordmanni) in Dresser's 

 •• Birds of Europe," ^- but has the under wing coverts and axillars 

 mostly chestnut. A still later stage of plumage, represented by two 

 females from Hor, June 30, differs from the adult only in having the 

 upper parts darker, with very faint buffy edges to the feathers, and 

 the ring bordering the plain buff throat broken up into a row of 

 black spots. 



In freshly plumaged adults the black ring on the throat is bor- 

 dered exteriorly (that is, caudally and laterally) with white, the 

 border being due to the white tips of the feathers composing the 

 black line. These tips wear off, and in older plumages the white 

 outer ring is correspondingly lacking. 



The darkness of the inner under wing coverts is considered a re- 

 liable difference between limhata and fulleborm^ but in the two 

 young males mentioned above, these feathers are darker in one than 

 in the other, and in the darker of the two, they match in shade those 

 of fulleborni from the eastern Congo. Some idea of the limits of 

 size variation of limhata may be obtained from the measurements 

 of the six adult males: Wing, 172-190; tail, 105-120; culmen, 18-19.5; 

 tarsus, 26-29. The single adult female measures as follows: Wing, 

 180 ; tail, 103 ; culmen, 18.5 ; tarsus, 28 millimeters. 



Although linibata is said to be a resident race in Ethiopia, it is not 

 improbable that some of the birds have a partial western altitudinal 

 migration to the valley of the Nile during the nonbreeding season. 

 Lynes °^ writes that both pratincola and limhata winter on the Nile. 



Family LARIDAE 



LARUS FUSCUS FUSCUS Linnaeus 



Larus ftiscus Linnaeus, Syst. Nat., ed. 10, vol. 1, p. 136, 1758: Europe, re- 

 stricted type locality, Sweden (Hartert). 



"Numerous in the harbor at Djibouti." (E. A. Mearns.) 

 Neumann •'^ records two gulls from Hora Schale, November 30, 



as " Larus f. afjfinis ( ?)." These probably are Larus fuscus fuscus. 

 In view of the fact that Mearns found this gull to be common at 



Djibouti it is noteworthy that Zedlitz "^ writes that Larus fuscus is 



apparently very uncommon or very local in the Red Sea. He saw it 



only in the harbor of Massowa. 



«^Vol. 7, pi. 513. 



83 Ibis, 1925, p. 560. 



"Journ. f. Ornith., 1904, p. 325. 



8» Idem, 1910, p. 297. 



