502 Mr. J. D. de la Touche on the 



can remember the bird appeared to be immature ; the upper 

 parts were extremely pale, and the plumage was much 

 worn. 



310. Larus ridibundus, Linn. [752.] 



Foochow and Swatow during the cool season. Very abun- 

 dant at the latter port in spring. 



311. Larus saundersi (Swinh.). [754.] 



One in summer dress obtained at Foochow on 17th March 

 and two in winter plumage on 21st November. It is scarce 

 in the district. It is common at Swatow in the spring. I 

 shot specimens there in winter and summer plumage on 13th 

 March. 



V^ 312. Sylochelidon caspia (Pall.). [755.] 



I noticed this Tern on the Foochow coast in September, 

 and obtained specimens in November. It is common at 

 Swatow, where it may be seen all the year round. I saw 

 large flocks on the coast near Namoa Island in winter. 



313. Thalasseus bergii (Licht.). [756.] 



Foochow and Swatow coasts in summer. Not abundant. 



314. Hydrochelidon leucoptera (Scliinz). [758.] 

 Foochow in May. Seen at Swatow in March and April. 



315. HyDROCHELID(;N HYBRIDA (Pall.) . [757.] 

 Foochow in May. 



-<^ 316. Sterna anglica, Mont. 



Obtained at Foochow in April, May, September, and 

 November, and at Swatow in May and September. It is 

 not uncommon, especially at Swatow. 



317. Sterna fluviatilis, Naum. [759.] 



Very abundant on the Swatow coast in summer. It breeds 

 on the rocky islets in company with Sterna melanauchen, 

 and leaves at the end of the warm season. 



I believe that this species also occurs in summer on the 

 Foochow coast. 



