Ill 



XXX, 332, 7. Read paralleluin. — 336, 1, read Anthracomartus. 

 xxxi, 352, 18. L. Jimbriata and L. condita from Utah are not in Lacoe's 

 cabinet, but in the Nat. Mus. Washington, D. C, with many more. (R. D. L.) 

 Yol. 2, page 440, line 13. Insert : in Leda clay. 

 443, 24 Read decoratus. — 25 Read Rogers's. 



445.10. Discites marcellensis. (Whitfield.) 



448, 16. Read lacoaiia. The first edition of Liddell & Scott's Diet, makes 

 mylacris masculine, the last edition makes it feminine. It is certainly not 

 neuter. (Scudder; Claypole.) 



449.1. Read rotundata. (Scudder.) — 14. Read Lescuropteris. (Lacoe.;f 

 Licsqueropteris. (Claypole.) 



450. " Newberry says the figure of nervation is erroneous; the nerves 

 fork near the base and curve somewhat where they join the mid-rib. In 

 Ohio, the plant is at the base of the Coal measures." XII. (Matthews.) 



456, 8. Read dluthoschi. — 11. Read 1883. — 18. Read Charleston. 



458, 3. Read crenulata. 



459, 2. Read Fil. Foss. —4 from bottom. Read fruit dots (sort.) 



464, 31. '< Certainly not Upper Devonian. This was the age assigned to 

 the flora of which this form is a part when the first examples were found ; 

 but Sir Wm. Dawson, when larger collections were made, referred the 

 flora to the Middle Devonian; no marine organisms have been found in 

 these beds to conform or disprove the reference." (Matthews.) 



466, 1. Synonym, Odontopteris tenuinervis, Lesq. C F. p. 125, pi. 22, figs 

 2,3. (Lacoe.) 



469, 16. Erase all between 5-42 and 97-16, also 19. (Claypole.) 



470, 10. Erase all but 68-4. — 14. Erase 88. (Claypole. ) 



471, 3. Insert, Bulletin Am. Mus. Nat. Hist. (Whitfield.^ 



476, 20. Logan considered the <' Quebec group " to be not '' Potsdam," but 

 of some intermediate age between Potsdam and Trenton. Now the "Que- 

 bec group " is known to extend in age from Lower Cambrian to beds high 

 in the Lower Silurian. See Ells's report of 1889. Potsdam fossils are col- 

 lected from the much higher conglomerates of Quebec and Point Levis. See 

 Walcott's Review of Ells, in Amer. Jour. Sci., Feb., 1890. 



478, 5. Shodack Landing, N. Y. Quebec group. 



479, 2, Now referred by Hall to Linnarsonia. (J. W. D.) 



480.2. ^Qs^d Middle Cambrian. (J.F.James.) 



480.11. Read Obolella polita, Hall. (Whitfield.), 



481,7. Read eccentrica.—^. Read "is" for "are." Emmons called 

 them laconic, and thought them (1. c. p. 113) older than the Low. Cambrian 

 (Walcott) shales of Washington Co., N. Y. But such a guess goes for 

 nothing. 



482, 5. Name pre-occupied. Read, therefore, O. newberryi, Lesq. Coal 

 Flora, p. 127, 1880. (Lacoe.) 



486. The right hand figure belongs to Phlegethontis serpens. See p. 

 635 below. 



487, 3. Read C. laciniata. — 14. Read 4, 5. — 15. Read decipiens. — The 

 figure of O. subcuneata is upside down. — 16. Read Oestocephalus. 

 (Cope.) 



490, 11. Read Lower Cambrian. (Matthew.) 



493, 23. Read Hall and Whitfield. 



494, 8. Platyceras growing on Ollacrinus. (Greene.) 



495, 3. For Salina read Niagara. (Claypole.) But H. D. Rogers did not 



