210 FLOEA OF LOWER COAL MEASURES OF MISSOURL 



margin of the compressed fossil opposite the leaf scar, an hypothesis at 

 variance with the aspect of the decorticated trunks and the area apparently 

 occupied by eacli bolster, or that the attachment was by the entire periph- 

 ery of the detached bolsters, in which case the latter were but slightly 

 protuberant. To explain the areolation of the decorticated trunk and the 

 slight imbrication of the bolsters, as shown in Fig. 2, photographically 

 enlarged with reversed light in Fig. 2a, PI. LVI, it is necessary to assume 

 that the bolsters were short and but slightly protuberant, and that they 

 were attached by the whole border shown in the separated examples, the 

 imbrication being but slight. 



To Lepidophloios Van Ingeni belong, I believe, the scales and cone 

 described in another part of this report as Leiyiclopliyllum (Lepidostrohiis) 

 missouriense. The relation of such cones to Lepidophloios has been referred 

 to in my remarks on the genus. The association of the scales in the same 

 matrix Avith the bolsters, e. g., PI. LXI and PL LXIl, as well as the fact 

 that this is the only satisfactory species of Lepidophloios yet found in these 

 beds, point to mutual relations of stem and cone in the remains described 

 under the two names. 



Likewise it is probable that the very broad Lyco^^odineous leaves 

 described as Lepidophloios sp., PL LVIII, Fig. 1, may safely be cited as the 

 leaves of L. Van Ingeni. To this species should also be assigned a large, 

 slightly obscure impression. No. 2267 of the United States National Museum 

 collection, enrolled by Professor Lesqiiereux in the register as Sigillaria 

 Defrancii Brongn. 



Lepidophloios Van Ligeni differs from L. anricnlahis and L. maerolepidotus 

 Gold, by the straight lower margins of the bolsters. L. laricinus has the 

 upper angle of the ordinarily exposed surface acute, not rounded, the leaf scar 

 being of greater altitude in proportion to its breadth, the upjjer angle smaller, 

 and the cicatricules near the center and in a row. The large specimen of cor- 

 tex from Caunelton, Pennsylvania, described as L. dilatatus, has the bolsters 

 more rounded at the top, the sides when exposed more rounded, the ventral 

 trace farther from the leaf scar, and the cicatricules near or above the center. 



Localities. — Clinton, Henry County, Missoiu'i, Nos. 6944, 5947, 5951, 

 5953, 5954, of the Lacoe collection ; Gilkerson's Ford, U. S. Nat. Mus., 

 6048-6052, 6075; Pitcher's coal mine, U. S. Nat. Mus., 6047,' 6053; Hemy 

 County, Missouri, Old Museum collection. No. 2267. 



