BIRDS OF EASTERN MASSACHUSETTS. 151 



267. Larus argentatus, Brunn. — Herring Gull. 

 Common resident ; more abundant in autumn and winter. 

 Does not now breed anywhere in the State, although it did 

 formerly; those remaining in summer are mostly immature 

 birds. 



268. Larus Delawarensis, Ord. — Ring-hilled Gull 

 Not uncommon along the coast in winter. 



The Hutchin's Gull {Larus Hutchinsii, Richardson). A 

 specimen taken in Salem harbor, 1856, in the museum of 

 the Peabody Academy of Science, labelled by Dr. Coues 

 as above ; it, however, looks very like an albino ; perhaps 

 L. argentatus. 



269. Chroecocephalus atricilla, Leack. — Lav gJmig 

 Gull. Not uncommon along the whole coast. Have found 

 it breeding at Muskegat Island, south of the main-land, and 

 near Nantucket. I should judge that there were a dozen 

 pairs breeding. Does not breed elsewhere on the coast. 

 Have seen an egg and bird taken at Tenant's Harbor, 

 Maine, by Mr. L. L. Thaxter, of Newton. I have seen the 

 bird late in November at Ipswich. 



270. Chroecocephalus Philadelphia, Leach. — 

 Bonaparte^s Gull. Common in autumn and spring, a few 

 "winter. 



271. Rissa tridactyla, Bon. — Kittiwdke. Common 

 in autumn and winter. 



The Marsh Tern (GelocJielidon Anglica, Bon.) is said to 

 occur ; if it does, I have yet to meet with it. 



272. Thalasseus Caspius, Boi. — Casjylan Tern. 

 Rare in winter. I have seen it upon one or two occa- 

 sions ; have also seen it in New York harbor in Decem- 

 ber. 



273. Thalasseus acuflavida, Cabot. — Cahofs Tern, 

 Sandwich Tern. Mr. Yickery has a fine specimen of this 

 bird in his cabinet, that he took at Cape Cod in the au- 

 tumn of 1866. He also saw another. This specimen is 



