Thurber, George, Esq., Providence, R. I.
Turner, Rev. W. W., Hartford, Ct.

*Tyler, Rev. Edward R., New Haven, Ct.
True, Nathaniel T., Esq., Monmouth, N. J.
TAYLOR, RICHARD C., Esq., Philadelphia.
Teschmacher, J. E., Esq., Boston.
TREGO, CHARLES B., Esq., Philadelphia.
Tucker, George, Esq., Philadelphia.
Townsend, John K., Esq., Philadelphia.
Totten, Rev. Silas, Hartford, Ct.
Troost, Dr. Gerard, Nashville, Tenn.
Tuckerman, Edward, Esq., Boston.
Troost, Lewis, Esq., Nashville, Tenn.
Thompson, John Edgar, Esq., Philadelphia.
Treadwell, Prof. J., Cambridge, Mass.

Thayer, Solomon, Esq., Lubec, Me.

Tuomey, Prof. M., Tuscaloosa, Ala.
Torrey, Dr. John, New York.

Totten, Col. J. G., Washington, D. C.
Thayer, Henry W., Esq., Boston, Mass.
Teschermakst, E. D., Schenectady, N. Y.

Tellkampf, Theodore A., Esq., New York.

Thompson, Aaron R., New York.

Taylor, Dr. Julius S. Carrollton, Montgomery Co., Ohio.

V.

Vancleve, John W., Esq., Dayton, Ohio.
Vaux, Wm. S., Esq., Philadelphia.
Van Lennep, Rev. H., Constantinople.
*VANUXEM, LARDNER, Esq., Bristol, Pa.

W.

*Webster, Matthew H., Esq., Albany, N. Y. Walker, Sears C., Esq., Washington, D. C.

Whiting, Col. H., Detroit, Mich.

Woodbury, Hon. Levi, Portsmouth, N. H.
Weaver, G. S., Esq., Cambridgeport, N. Y.
Wheatland, Dr. Henry, Salem, Mass.
Wells, Samuel, Esq. Northampton, Mass.
Wyman, Dr. Jeffries T., Cambridge.

Wilder, Lyman, Esq., Hoosick Falls, N. Y. *Wright, Dr. John, Troy, N. Y.

Wailes, Col. B. L. C., Washington, Miss.

Weld, Henry Thomas, Jr., Esq., Mt. Savage Works, Md.

Whitney, Josiah D., Esq., Northampton, Mass.

Williams, Moses B., Esq., Boston.

Wright, Albert D., Esq., Brooklyn, N. Y.

Whitman, Wm. E., Esq., Philadelphia.
Warriner, Prof. Justin B., Burlington, N. J.
Whitney, Asa, Esq., Philadelphia.

Webber, Dr. Samuel, Charlestown, N. H.
Wilder, Henry, Esq., Lancaster, Mass.
Wetherill, John P., Esq., Philadelphia.
Whittlesey, Charles, Columbus, Ohio.
West, Charles E., Esq., New York.
Warren, Dr. John C., Boston.
Webster, Dr. J. W., Cambridge, Mass.

Wheatley, Charles M., Esq., New York.

Winslow, Gordon, Esq., Staten Island, N. Y.

Wilkes, Commander Charles, U. S. N., Washington, D. C.

Whelpley, W. J. D., Esq., New York city.
*Webster, Horace B., Esq., Albany, N. Y.

Whipple, Milton D., Esq., Lowell, Mass.
Wolf, Dr. Elias, New York.

Wedderburn, A. J., Esq., New Orleans, La.

Y.

Yates, Giles F., Esq., Albany, N. Y.

Young, Prof. Ira, Hanover, N. H.

Total number.

461

ERRATA.

Page 13, line 2, and subsequently, read Cephalopoda.

Page 15, line 13, read Cephalopoda Belemnosepia; line 15, instead of "more" read none; line 29, read Gryphœa.

Page 16, line 32, and subsequently, read Beckii.

Page 17, line 14, read Facial suture; eyes.

Page 18, line 12, read Calymene Beckii.

Page 20, line 17, read Aulopora.

Page 23, line 23, read Vesiculosum.

Page 31, in last paragraph, read serrated instead of "cerated."

Page 32, line 23, read Association of, instead of "Assistant.”

Page 33, line 3, read De Kay, and in line 5, Harlani.

Page 43, line 4, read are instead of "is."

Page 63, line 20, add by Prof. J. Hall.

Page 70, line 12, read Cyprinidæ, and subsequently, Cyprinida and Cyprinodonts; and in line 32, Lepidosteus.

Page 71, line 4, read Crinoids.

Page 74, line 26, read Vectores.

Page 91, line 3, read South instead of North.

Page 99, line 27, read Lanceolatus.

Page 102, line 7, read Alkalimetry.

Page 145, line 1, instead of Tuscaloosa, Ala. read Columbia, S. C.