Vol. 6S.^ rALJEONTOLOGY OF THE WARWICKSHIRE COALFIELD. 623- 



The stems of Calamites are veiy common at all horizons in tho 

 Coal Measures, but the leaves (Annularia, PL LIX, fig. 4, and 

 Ccdam.oclad us) are much rarer; while the fructifications (C'«?fn7?o- 

 stacliys and Palc&ostachya, PI. LVII, fig. 5) have only been seen at 

 the Chilvers Coton Clay-pit. 



Xeueopterts GiGAisTTEA Sternberg. Three varieties of this species 

 have been collected. The typical form (PI. LIX, fig. 3) is the only 

 common one, but at Chilvers Coton Clay-pit it is accompanied by 

 a variety with elongate pinnules. Prom the Stockingford Clay-pit 

 a variety with unsymmetrical pinnules has been obtained. 



Neijeopteris schlehani Stur (PL LYIII, fig. 1). This plant 

 has only been found at one locality, where several difl^erent varieties 

 are common. 



Xeuropteris scheuchzeri Hoflfmann (PL LIX, fig. 6). This 

 species, together with M. ovata Hoffmann (PL LIX, fig. 5), is very 

 abundant in the Haunchwood Sandstones at Grifi*, where the large 

 and small cyclopteroid pinnules and the terminal pinnules from the 

 frond all occur detached. 



Sphenopteris multifida Lindley & Ilutton,^ The distinctive 

 characters of this species (see PL LVIII, fig. 10) are somewhat 

 obscure, as the type-specimen is lost ; and the enlarged drawing 

 given by Lindley & Hutton does not agree with their figure 

 showing the plant of natural size, in that the acute character of the- 

 pointed pinnules appears to be exaggerated in the enlarged figure. 



Lepidodexdron. Many specimens of this genus, belonging to 

 several species, have been obtained from the Thick Coal exposed in 

 Chilvers Coton Clay-pit. The fossils are commonly preserved as 

 casts of the exterior of the bark of the plant, but leafy branches, 

 detached leaves (Lepidojjhyllum), cones {Lepidostrohus)^ and macro- 

 spores also occur, and the latter abound both in the shales and in 

 the coal itself. A specimen of a cone containing macrosporcs is- 

 figured in PL LIX, fig. 1. 



Bark of unknown plant (PL LVIII, fig. 4). This specimen 

 appears to be the bark of a Lycopodiaceous plant somewhat similar 

 to, but quite distinct from, Bothrodendron. Two leaf-scars are 

 shown. 



SiGiLLARiA elongata Erongniart. The specimen figured in 

 PL LVIII, fig. 8 is a small portion of the bark from a large tree. 

 Such trees are common at the horizon of the Thick Coal. 



1 'Fossil Flora ' vol. ii (1833-35) p. 113 k pi. cxxiii. 



