140 TRANSACTIONS OF THE [jUNE 6, 



but I think it must have been l^ew York, as I do not remember 

 specimens of that kind from Ohio."] Finally, from the Catskill, at 

 Jefferson, Schoharie County, N. Y., while in an "additional note, 

 October 23, 1862," opposite p. 329, the age of the Jefferson horizon 

 is changed to Chemung. [This locality is now considered as of 

 Hamilton age. Am. Geol., vol. vii, p. 356, foot-note.] Rhizomes 

 are reported from Fullenham, Schoharie County [probably Fulton- 

 ham, which is Hamilton], and at Cazenovia [Madison County, and 

 also of Hamilton age]. 



Dawson, Quart. Jour. Geol. Soc, vol. xix, 1863, pp. 461, 462, 

 states that he has very imperfect specimens from Perry, Maine, 

 which he somewhat doubtfully identifies as belonging to the three 

 species P. princeps, P. elegant, and P. glabrum: on p. 465, see pi. 

 xviii. Figs. 22a-22g, is a description of the rhizomata of P. 

 princeps, which are stated to be from " the marine limestones at the 

 base of the Gasp^ sandstones, constituting the lowest members of 

 the Devonian series, if they are not Upper Silurian." 



Hall, 16th Regent's Rept. on State Cab. Nat. Hist., 1863, p. 

 Ill, fig. 2, reproduces Yanuxem's figure of a fossil plant [Geol. 

 N. Y., Pt. Ill, p. 161, fig. 40], and calls it P. princeps Dn. on p. 



no. 



Dawson, Geol. Surv. Canada, Foss. Plants Dev. and Up. Sil., 

 1871, pp. 38, 39, describes the variety ornatum of P. princejjs 

 from Gaspe, and gives good figures of it on pi. ix, figs. 97-110; 

 while on pi. x, figs. Ill, 118-120, and pi. xi, figs. 127-129, 133, 

 134, are additional figures illustrating the structure of P. princeps. 

 On p. 76 it is stated jthat from the Middle Devonian of Scotland are 

 "fragments referrible to Psilophyton ptrinceps,^'' and on p. 77 a 

 specimen, "apparently P. princeps,'''' is mentioned from the Devo- 

 nian of Northern Scotland. 



Peach, Trans. Edinb. Geol. Soc, vol. iii, Pt. II, 1879, pp. 150, 

 151, identifies this species from the Old Red Sandstone of the island 

 of Stroma, Pentland Firth, and from several localites in Caithness, 

 northern Scotland. 



Zeiller, Bull. Soc. Gdol. de France, 3d ser., vol. viii, 1880, p. 

 504, mentions a specimen from the Devonian of CaflBers, France, 

 which he compares with one of Dawson's figures of P. princeps, 

 although he is inclined to consider it nearer Lepidodendron gas- 

 pianum Dn. 



Dawson, Foss. Plants Brian (Dev.) and Up. Sil., Pt. II, 1882, 

 p. 103, reports this species from the Lower Devonian of Campbell- 

 ton, northern New Brunswick, as well as on the opposite side of 

 the Restigouche River in the Province of Quebec. 



J. C. White, 2d Geol. Surv. Penna., G', 1883, p. 307, mentions 

 "vegetable fragments which resemble Psilophyton princeps Dn." 

 from what is called upper Chemung, two miles above Danville, 

 Montour County, Penna. 



Kidston, Cat. Paleozoic Plants British Mus., 1886, p. 233, calls 

 the plant figured by Yanuxem in 1842 the "earliest figure of 



