8 4 



8oq, 810. 3 Males ; Criccieth, North Wales ; 22nd May, 

 1899. — All 3 contained small fish bones. 



Arctic Tern (Sterna macrura, Naumann). 



811, 812. 2 Males, 4 Females ; Anglesey ; 14th June, 1893. — 

 All 6 examples contained small fish bones. 



Roseate Tern (Sterna dougalli, Montagu). 



813, 814. 2 Males, 1 Female ; Anglesey ; 14th June, 1893. — 



All 3 contained the bones of small fish ; 1 contained a small 

 flat stone. 



815. 1 Male; Anglesey; nth July, 1900. — Bones of 

 small fish. 



Summary of the 3 species of Tern. — All the 15 examples 

 contained the remains of fish. 



Black-headed Gull (Larus ridibundus, Linn.). 



816-860. 45 Pellets; Anglesey ; 2nd May, 1908. — 36 con- 

 sisted almost entirely of the remains of the common red dung 

 beetle (Aphodius fimetarius) ; 1 contained 22 almost perfect 

 examples* of the same species of Aphodius, 7 "rove beetles" 

 (Philonthus laminatus, P. politus and P. czneus) and 2 Geode- 

 phagous beetles (Loricera pilicornis) ; 1 of equal proportions 

 of the dung beetles Geotrupes stercorarius and Aphodius fime- 

 tarius, and grass ; 1 the remains of 45 wire-worms (larvae of 

 Agriotes ? lineatus) mixed with a few minute fragments of 

 Geotrupes sp. 



861. ? Sex ; Dee Estuary ; 22nd September, 1904. — Remains 

 of 2 dung beetles, Geotrupes sp. 



862-896. 35 Pellets ; Dee Marshes ; 24th September, 1901. (See 

 also Field Notes.) — Each pellet contained on an average the 

 remains of 400 examples of Daddy-long-legs (Tipula oleracea) ; 

 1,600 ova of this insect were counted in 1 pellet. 



897. ? Sex ; Cheshire ; 2jth November, 1904. — Completely 

 filled with shrimps. 



* When found some of these insects showed evident signs of life, and twelve 

 hours later several of them had recovered sufficiently to be able to walk about quite 

 actively. They could not, therefore, have been retained in the bird's stomach or 

 gullet for any length of time, and must have been voided prematurely owing to 

 sickness or some other cause. 



