240 PROCEEDINGS OP THE ACADEMY OF 



of leaf-scar ; tubercles obovate ; appendices well marked, flexuous ; middle 

 line distinct, transversely rugose. 



The left tubercle is obsolete, and when present is placed lower than the 

 right ; the middle line is sometimes flexuous. Locality and position unknown. 

 Cabinet of the Academy. 



L. drepanaspis, n. sp. Cicatrices rhomboidal with rounded angles ; 

 margin flexuous; vascular scar triangular, raised, placed in apex of leaf-scar, 

 bounded below by a crescentic slope, on which are the tubercles ; appendices 

 parallel to the margin ; medial line transversely rugose. 



This species somewhat resembles L. clypeatum Lesq., but is very differ- 

 ent when more closely examined. Locality and position unknown. Cabinet 

 of the Academy. 



L. Lesquereuxi, n. sp. Cicatrices sub-rhomboidal, elongated, with the 

 apex and base acuminate, vascular scars curved, sub-rhomboidal, tbeir 

 apex rounded and other angles acute, marked with two or three (sometimes 

 obsolete, sometimes confluent) dots ; appendices distinct ; medial line very 

 strongly marked, transversely rugose. 



It is with great pleasure that we dedicate this handsome species to Prof. 

 Lesquereux, to whom every American Geologist is indebted for time and toil 

 spent in elucidating the ancient Flora of this continent. This plant, besides 

 the above characters, has also a crescentic scar, situated in the apex of leaf- 

 scar and marked with two, often obsolete, dots. Locality unknown. Posi- 

 tion, Sandstone below the Coal? Cabinet of the Academy. 



L. B o r d ae, n. sp. Cicatrices rhomboidal, elongate, with apex and base 

 acuminate and curved; margin distinct; vascular scars placed near the apex 

 of cicatrix, trapezoidal, marked with two (often obsolete) dots ; appendices well 

 marked ; tubercles obsolete ; medial line distinct, transversely rugose. 



This species is allied to L. elegan s Brong., but is separated from it by 

 the scars being more elongated and the consecutive ones communicating, as 

 well as by the difference in the proportion of the length to the breadth of the 

 cicatriculi and the much greater rugosity of medial line. Two magnificent 

 specimens were presented to the Academy by Mr. Borda, the largest measuring 

 3 feet 7 inches by 13 inches. Locality and position, Top slates of Back Vein, 

 south side of Mine Hill, in the Black Heath Colliery. 



Lepidophlogos Sternb. 



M. Unger (Gen. et Spec. Plan. Fossil) marks this as a doubtful genus, 

 but we think it is quite a distinct one. 



L. icthyolepis, n. sp. Stem large ; cortex thin ; cicatrices approximate, 

 raised, triangular, furnished with an appendix on each side and one in the 

 middle ; vascular scars not preserved. Locality, Roof of Perseverance Tunnel, 

 Dauphin Co., Pa. Cabinet of the Academy. 



Mr. Lesquereux, in his "Catalogue of American Coal Plants," gives L.cras- 

 sicaule,asa species of Brongt.; we are unable to find it in the works of that 

 author, neither is it in Unger (op. cit.) As Prof. Lesquereux does not describe 

 it we are at a loss as to its, nature. 



Lepidostrobus Brong. 



L. stachyoides, n. sp. Catkin small, about two and a half lines^ in 

 breadth and an inch in length ; sporanges rhomboidal with flexuous margins, 

 arranged in a single row on each side of the slender axis. 



In the specimen a leaf of Lepidodendron has such relations to the fruit as to 

 appear at first sight to have been connected with it, but closer examination 

 shows this not to have been the case. 



[June, 



