BIRDS OF EASTERN MASSACHUSETTS. 151 
267. Larus argentatus, Bruyn. — 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, Orp. -— Ring-billed 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, louks very like an albino; perhaps 
L. argentatus. 
269. Chroecocephalus atricilla, Lzacu. — Laughing 
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, Lracu. — 
Bonapartes Gull. Common in autumn and spring, a few 
winter. 
271. Rissa tridactyla, Bon. — Avttiwake. Common 
in autumn and winter. 
The Marsh Tern (Gelochelidon Anglica, Bon.) is said to 
occur ; if it does, I have yet. to meet with it. 
272. Thalasseus Caspius, Bo1.— Caspian 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, Cazor. — Cabot’s Tern, 
Sandwich Tern. Mr. Vickery 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 
