FEOM THE HTJTTON COLLECTION. 49 



71. Part of a long slender stem, with about twenty fertile 



spikes attached to the joints ; joints of the stem numerous, 

 and about half an inch distant. At each joint on one side 

 spikes are attached, some of them more than two inches long, 

 very narrow, and cylindrical. The spikes are surrounded at 

 the joints with whorls of fine, long, pointed leaves or bracts, 

 sessile, or nearly so. This fructification is smaller, but very 

 similar to the A. tuberculata of L. et H., but the bracts or 

 leaves are fiuer, and more sharply pointed. 

 Loc. — Shale above the Bensham Seam, Jarrow. (H. C. 48). 



72. Several long, slender, jointed stems on this slab. The 



longest stem about twelve inches, not tapering, nine or ten 

 joints ; surface finely striated longitudinally. This is probably 

 the fertile stem on which the spikes or cones have been 

 arranged in whorls round the joints. 

 Loc. — Shale above the Bensham Seam, Jarrow. (H. C. 608). 



73. Part of a long, slender stem, with many rootlets spring- 

 ing from its base. It is probably the fertile stem of this 

 Catamite. 

 Loc— Shale above the Bensham Seam, Jarrow. (H. C. 74). 



Remarks. — Schlotheim's unsatisfactory figure is always refer- 

 red to as the Type of this species. The figure is unsatisfactory, 

 as we do not know whether it is of the natural size, and the 

 rootlet or branchlet-scars below the joints are not represented. 

 In C. cannceformis these scars are larger and oval, and not cir- 

 cular as in the foregoing species. The figures given by Geinitz 

 and Schimper, referred to above, are more characteristic than 

 Schlotheim's. I have no doubt that Brongniart's C. gigas be- 

 longs to this species. There are specimens from this coal-field 

 equal to it in size, which cannot be separated from C. cannce- 

 formis. The specimen figured as C. ramosus by Artis, and copied 

 by Brongniart and others, represents the branching part of the 

 stem of this species. The two branch scars are large and placed 

 opposite on each node, and crosswise on alternate nodes, as in 

 the preceding species. The Calamites nodosus of the 111. Foss. 

 Plants, pi. 3, is probably the upper portion of a stem of this 

 species. 



AsterophylUtes foliosa and galioides of L. et H. are considered 



