WHITE] NOTES ON CHARACTERISTIC SPECIES. 907 



nessiiig sandstone of northwestern Penns^'lvania. and the upper plexus 

 of conglomerates in the anthracite reg'ions. In the Southern Anthra- 

 cite Held it is found at a number of horizons in the Pottsville Gap. the 

 Swatara Gap, Rausch Gap, the Lincoln and Brookside mines, the Eureka 

 tvmnels, Williamstown and Big Lick mines, Millers drift, Kalmia mine, 

 and the Kemble drift. A very large form occurs at about 450 feet ])elow 

 the Twin coal in the Pottsville Gap. The elongated type mentioned 

 above occurs in the roof of Lykens coal No. 2 at the lower Eureka 

 tunnel and at the New Lincoln mine. A type probably representing the 

 same form occurs at 380 feet below the Twin coal in the Pottsville Gap. 



Cardiocarpon Girtyi sp. nov. 

 PI. CXCIII, Fig. 11. 



Seeds flat, or nearly so, not ver}^ large, ovate-cordate, 10 to 11 nmi. 

 long, 10 mm. in diameter at the broadest point, a very little below the 

 middle, with rather shorter nucleus, rounded at the base, apiculate at 

 the top, and bordered bv an extremely broad wing; wing nearly 

 circular in form, 9 to 13 mm. in width, slightly cordate by a shallow 

 sinus at the point of contact with a not verv distinct chalaza, a little 

 broader on either flank of the base, and a little narrower at the imme- 

 diate top, where it is cut to a depth of 2 mm., with rounded edges, in 

 a narrow, acute, micropylar sinus. 



The conspicuous features of this species are the nearly circular form 

 of the wing and the great breadth of the latter, which nearly equals, 

 if not exceeds, the longer diameter (1 cm.) of the nucleus. As may 

 be observed by an inspection of the figure, PI. CXCIII, Fig. 11. the 

 nucleus is somewhat shorter than the outer test. From the intermediate 

 space at the apex the mita'opjdar tube passes, as a thickened double 

 line, to the angle of the sinus. A slight, somewhat cuneate, thickening 

 of the chalaza at the base of the nutlet may also be seen. Cardio- 

 carjjon (y/r?fyz', together with Cardlocarpon Philllpsi., C. Newberry i^ C. 

 samarcefomie^^ C. annulatwn^ C. dilatatum^*' ?indi C m^ew^s,^ constitute a 

 group of large, })road- winged species of the genus, whose occurrence 

 is characteristic of the Upper Lykens division or the Sewanee zone 

 of the Pottsville, although some of the species occur very near to the 

 upper limit of the formation. Cardlocarjyon Ba'deyl^^ from the so- 

 called middle Devonian at St. John, New Brunswick, appears to be a 

 very closely related species. This group seems also to bear a close 

 aflinity to the Old World fossils described by Fiedler' as Jordania 

 htgnonioides and J. oblonga. 



1 Andrews, Kept. Geol. Survey Ohio, 1875, Vol. 11, Pt. I, p. 425, pi. xliv, fig. 2. 

 ^Newberry, Rept. Geol. Survey Ohio, 1873, Vul. I, I't. II, p. 375, pi. xliii, tigs. 11, 11a. 

 'Op. cit., p. 374, pi. xlii, fig. 8. 

 4 Coal Flora, Vol. Ill, j.. 800, pi. ex, fig. 2. 

 50p. cit.. Vol. II, p. .503, pi. ixxxv, flg.s 34, S-'S. 



•"'Dawson, Fossil Plants of the Devonian and l'pj)er Silurian Formations of Canarta, ls71, p. (JO, pi. 

 xix, fig. 219. 

 '' Foss. Friichte fl. Steinkohlenfl., p. 61, pi. xxvii, tigs. 36, 37, 43-45. 



