865 Rhab, 



1873, page 378, plate 44, fig 7, a large nut, 2^ inches long by 1^ 

 in. broad; surface nearly smooth, with faint traces of ridges; 

 suspected by Newberry of being perhaps R, costatus^ with its 

 hull or envelope more or less perfectly preserved; but no 

 proof of it yet. As for Goeppert and Bergers' genus Rliab- 

 docarpus^iov flattened nuts not triangular {Trigonocarpon), 

 Newberry includes in it all the ovoid, flattened nuts which are 

 in no wise three-sided, regardless of the tree stems and leaves 

 among which they now lie in the Coal measure shales. This 

 species was found like most of the others in the lowest coal 

 bed roof, the Sharon (Ohio No. 1) coal^ near the base of XI I. 



Rhabdocarpon amygdalseforme, Goeppert and Berger. 

 De Fruct. 1884. Goal measures, Lesquereux in Geol. Pa., 

 1858, 877; Coal Flora, 1880, p. 581, plate 75, figs. 27, 28. Found 

 in one of the low {XII) anthracite beds at Trevorton, Pa. 

 Also, at the base of XII, Pittston, Pa. Lacoe's collection (G7, 

 40). Also, in roof of Sharon coal,, Mercer Co., Pa., near base 

 of XII, (Q3, 160.) Also, in Darlington coal floor, Beaver 

 •Co., Pa. (Q, 55.) Also, in Coal Ro, S of the Illinois series. — 

 XII, XI I L 



Rhabdocarpon apiculatum, Newberry, Pal. Ohio Vol, 1, 

 1873, page 377, plate 44, fig. 6 (given in the group abo^e), an 

 elliptical nut, with about a dozen nearly equal, rounded ridges, 

 strong mid-way of their length and dying down toward both 

 ends; possibly the same as R, costatum^ as we do not yet know 

 how much the form of such a nut might have varied. In fact 

 both may be mere varieties of R, carinatum. All three fell 

 from trees that grew in the same forest, for all three are found 

 in the roof shale of the Sharon coal. (Supposed by Lesque- 

 reux to be only the decorticated condition of R. carinatum- 

 Coal Flora, 1880, p. 579.) Tallmadge, Ohio, near bottom of 

 Conglomerate, XI L 



Rhahdocarpon arcuatMm. See Carpolithes arc. XIII. 



Rhabdocarpon bochsianun, quoted by White (Q, 55) as 

 found by Lesquereux in the Darlington coal ffoor, Beaver Co., 

 Pa. XIII 



Rhabdocarpon carinatum, Newberry, Pal. Ohio, Vol. 1, 

 1873, page 376, plate 43, fig. 3 (in the group of figures given 



