[MATTHEW] A REVIEW OF THE LITTLE RIVER GROUP 121 



Horizon and Locality. — Leaves of this species are common at sev- 

 eral horizons in the plant heds ; often (as when much flexed and 

 crossed) they are not distingnishable from those of A.? fissus n. sp., 

 and A. fasciculatus n. sp. 



AsTEEOPHTLLiTES FASCicuLiTUS n. sp. Plate I, Fig. 2. 



Stem striate. 6 mm. or Ze.« in diameter, internodes 30 mm. long, 

 nodes obscure. Leaves in fascicles at the nodes, 5 or more in a fascicle, 

 long linear sub-rigid, width less titan 1 mm., length 50 mm., or more. 



This species is not separable by its leaves from A. longifolia, but 

 when found in connection with the stem the different mode of 

 insertion at once distingnishes them; also the nodes are different, the 

 nodes in this species being very inconspicuous. 



Locality and Horizon. From the shale of Bed 7 or 8 of Hartt's 

 section at Fern Ledges, Lancaster, X.B. 



AsTEROPHYLLiTES (?) FISSUS n, sp. Plate VI, Figs. 4, 5 (and 6?). 



This species has long slender sub-rigid leaves like the preceding 

 species (.4. longifolia), but the metho'd of branching distinguishes it. 



Stem irregularly striate lengthwise, and the nodes at long intervals 

 (60 mm. in a stem 6 mm., ivide). 



The leaves are from- a half to one mm. ivide; they are 3 {some- 

 times 2) cleft, divisions near the stem or distant from it. The com- 

 pound leaves throw off branches on each side of pseudonodes; at these 

 points the leaf branches in a ternate mcinner, but without a true node, 

 as the vascular bundles extend directly from the rachis of the leaf into 

 its subdivisions. 



The rachis is flat and broader than the sub-divisions, the ultimate 

 branches being long and slender, ivith a diameter of one to one and a half 

 millimetres; they are 7 ^o 8 centimetres long, are rather thick and 

 have a channel or nerve on the upper side. 



The nervation and branching thus approaches that of the frond in 

 ferns, but the branches are not alternate, unless some cases of dicho- 

 tomy may represent the alternate method of division. 



What appears to be a terminal shoot or fruiting spike of this 

 species, is occasionally found; this has close nodes and strap-like nerved 

 leaves, which grew in whorls, with six or seven leaves to a whorl. The 

 nodes are about 7 mm. apart, the leaves are about 2 mm. wide and 

 35+ mm. long; they are distinctly 2 to 3 nerved, and have numerous 

 longitudinal striae on the intervening ridges of the leaf. The ultimate 



