MATONIDIUM. 67 
V. 2222. Woodcut, Fig. 8. Portions of several pinne con- 
verging to a large rachis. Far inferior in preservation to Schenk’s 
figured specimens, LEcclesbourne. Rufford Coll. 
V. 2223. On this specimen is a fragment of a fertile pinna 
showing the position of the sori. Ecclesbourne. Rufford Coll. 
Fig. 8.—Matonidium Gépperti (Ett.) (V. 2222). 
V. 2737. The pinnules are larger than in the other specimens, 
more like those of Icrodictyon in size, but their shape is that of 
Matonidium. 
Similar examples of size variation have been referred to in the 
figures of Schenk, Heer, and Trautschold. Ecclesbourne. 
Rufford Coll, 
V. 2175, V. 21750, V. 2178, V. 2205, V. 2384. Pinnules 
narrower than usual. Ecclesbourne. Rufford Coll. 
10,827, 11,618. Tilgate Forest. Mantell Coll. 
