44 G PALAEONTOLOGY OF ILLINOIS. 



Genus Artisia, Sternb. Woody cylinders, apparently a 

 central pith, narrowly transversely ribbed, referred to Lomato- 

 floyos, Sternb., by Corda, to Conifers by some authors, and to 

 Catamites by some others. 



Artisia transversa, Sternb. Specimens in the State Cabinet 

 from Grayville, Upper Coal Measures. I have in my posses- 

 sion some of these woody cylinders, about two inches in diame- 

 ter, somewhat compressed, exhibiting transversal ribs on one 

 side and longitudinal strice, just like those of Catamites, on the 

 other. 



FOURTH DIVISION.— BRANCHES, STEMS AND FRUITS OF LYCOPODIACEA. 



Genus Selaginites, Brgt. Stems dichotomous; leaves small, 

 numerous, imbricated, sometimes enlarged at the base, scarcely 

 leaving any visible scars. 



Setaginites uncinnatus, Sp. nov. PL 41, fig. 3. The only 

 specimen seen of this species is in the State Cabinet. I found 

 it at Colchester, on a broken slab of roof shale, where nothing 

 more can-be seen but what I have figured. It evidently repre- 

 sents a plant of the Lycopodiaceai, with a slender, irregu- 

 lar forking stem, covered with short, acicular, numerous leaves, 

 mostly perpendicular to the stem, apparently not enlarged at 

 the base. On the branches the leaves appear shorter, more 

 erect and imbricated. The small and latest branches, in their 

 unfolding, have the same spiral disposition as some Lycopodia- 

 ceoe and the Ferns. This species is distantly related to Selagi- 

 nites Erdmanni, Germ. Coal No. 3. 



Selaginites cavifolius, Lsqx. Lycopodites cavifolius, Lsqx. 

 Geol. Bept. of Ky., vol. 4, p. 437, tab. 4, fig. 4 and 4 a, ined. 

 Small specimens from Colchester. Coal No. 3. 



Selaginites crassus, Sp. nov. PI. 39, fig. 8. Stem thick, ap- 

 parently creeping, dichotomous, with short, thick branches, 



