32 Mr. J. D. D. La Touche on the [Ibis, 



1916, and saw that day many flocks of tliis Tern passing 

 down the coast. 



256. Hydrochelidon leucoptera (Schinz). 

 HydrocheUdon leucoptera D. & O. p. 524 ; La T. p. 582. 

 The White-winged Black Tern passes in spring and is 



very abundant during the latter half of August, when it 

 travels along the coast in flocks. 



I noticed this Tern on the Nevvchwang plain in May and 

 June, and on the River Liao on the 11th of August, 1889. 



257. Gelochelidou anglica (Mont.). 

 Sterna anglica La T. p. 582. 



A single example of the Gull-billed Tern was seen at the 

 port on the 4th of May, 1913. 



258. Sterna hirundo tibetana Saunders. 

 Sterna fluviatitis D. & O. p. 525. 



I have seen numbers of medium-sized Tern passing in 

 flocks during August and September which were probably 

 tins species or S. longipennis, but none were collected. 

 My collector, however, brought me at the beginning of July 

 1915 ten eggs and an example of S. tibetana from the coast, 

 about twenty miles W.S.W. of Chinwangtao, wheie he found 

 this Tern breeding among the sand-dunes. These eggs are 

 brownish olive^ deep buft", and yellowish-green, with spots 

 and large blotches of dark brown over inky purplish-grey 

 blotches, the latter being on the surface as well as within 

 the shell. The shape varies from a somewhat oval-ovate to 

 broad-ovate. The longest egg measures l'75x]*18 in., 

 the shortest 1*53 x 1-17 in., the broadest 1-66 x 1*23 in., 

 and the narrowest l-64xl'13in. The ten eggs average 

 l-64xl-18in. 



259. Sterna sinensis Gm. 

 Sternula sinensis D. & O. p. 527. 

 Sterna sinensis La T. p. 582. 



The Chinese Tern arrives about the fourth week in May 

 and breeds commonlv in the district. It lays three eggs in 



