DATES OF CONRAD. 
233 
been verified; many of them were wrong in the original. It 
may be noted that in the imperfect index printed on pp. 
86-’9, in 1861, by Mr. Conrad, several generic names were 
changed, Axinea being substituted for Pectunculus , etc. These 
changes may be found in Mr. Conrad’s “ Catalogue of the 
Miocene shells of the Atlantic Slope ” (Proc. Acad. Nat. Sci., 
Phila., for 1862, pp. 559-582; covering June-December, 1862, 
and distributed by the author in March, 1863), and it has 
not been thought necessary to swell the index by including 
them. 
Amphidesma sequata, p. 65, pi. 36, f. 5; Proc. Ac. i, 307, Oct. 1843. 
Amphidesma carinata, p. 37, pi. 19 [1st ed.], f. 7; [2d ed.] f. 11; J. Ac. 
vi, 229, 1830, pi. ix, f. 23 (Abra, 1862). 
Amphidesma constricta, p. 76, pi. 43, f. 10; S. J. xli, 347, Oct. 1841. 
Amphidesma equalis Say, p. 76, pi. 43, f. 9; J. Ac. ii, 307,1822. 
Amphidesma nuculoides, p. 73, pi. 41, f. 6; S. J. xli, 347, Oct. 1841. 
Amphidesma protexta, p. 73, pi. 41, f. 7; S. J. xli, 347, Oct. 1841. 
Amphidesma subovata Say, p. 36 (no fig.; Abra s. Conr. 1862); J. Ac. iv, 
152, pi. x, f. 6,1824. 
Amphidesma subreflexa, p. 37, pi. 19, [1st ed.] f. 6; [2d ed.] f. 12; J. Ac. 
vii, 133, 1834, (Abra, Conr. 1862). 
Anguinella, see Serpula. 
Angiiinella virginiana, p. 77, pi. 44, f. 4,1845 (== Serpula virginica Conr. 
1839.) 
Anomia ephippium Lam. var., p. 75, pi. 43, f. 4. 
Anomia Ruflini, p. 74, pi. 42, f. 6, Jan. 1845. 
Area sequicostata, p. 60, pi. 31, f. 6, Jan. 1845. 
Area arata Say, p. 58, pi. 30, f. 6; J. Ac. iv, p. 137, pi. 10, f. 1, 1824. 
Area brevidesma, p. 62, pi. 32, f. 5, Jan. 1845. 
Area buccula, p. 60, pi. 31, f. 4, Jan. 1845. 
Area cselata, p. 61, pi. 32, f. 2, Jan. 1845. 
Area callipleura, p. 54, pi. 29, f. 2, May 1840. 
Area centenaria Say, p. 55, pi. 29, f. 4; J. Ac. iv, 138, Dec. 1824; Eo. fos., 
p. 16 . 
Area elevata, p. 2, cover of No. 1, Mar. 1840. 
Area idonea, p. 55, pi. 29, f. 3; + A. stillicidium, Eo. fos., p. 15, pi. 1, f. 3, 5, 
Oct. 1832. 
Area improcera, p. 60, pi. 31, f. 5, Jan. 1845. 
Area incile Say, p. 56, pi. 29, f. 5; J. Ac. iv, 139, Dec. 1824; Eo. fos., p. 16. 
Area limula, p. 60, pfi 31, f. 3 ; Eo. fos., p. 15, pi. 1, f. 1, Oct. 1832. 
Area lineolata, p. 61, pi. 32, f. 3, Jan. 1845. 
Area plicatura, p. 61, pi. 32, f. 4, Jan. 1845. 
Area propatula, p. 61, pi. 32, f. 1; Proc. Ac. i, p. 323, Dec. 1843. 
