622 



MR. E.D. TERXO.Y ON THE GEOLOGT AND [DeC. I912, 



Species. 



Horizon. 



Locality. 



Artisia transversa (Avtis) 



Above Thick Coal. 



Messrs, Stanley's No. 4 

 clay-pit, Stockingford. 





Thick Coal. 



Stockingford Colliery. 



Cordaiantlins pifca irni(e(Iji\\(\- 



Below Seven-Feet Coal. 



Amington Colliery. 



ley & Huttoii). 







Walchia sp 



Keele Beds. 



New sinking at Keresley. 



Semijta Ixcertje Sedis. 







Trigonocarpns jjarlinsoni 



Thick Coal. 



Xewdigate Collieiy. 



Brong-niavt. 







Samaropsisfuitans (Dawson) . 



Rvder Coal. 



Tunnel Colliery. 



Cardiocarpus cordai (Geiiiitz). 



RVder Coal. 



Baddesley Colliery. 



Cardiocarpns congruens 



Thick Coal. 



Chilvers Coton Claj^-pit. 



Graiid'Euiy. 







Carpolithes cf. areolatus 



Thick Coal. 



Stockingford Clay-pit. 



(Boiilay). 







Bhahdocarp>ns snlcatns (Presl). 



Thick Coal. 



Griff Colliery, Clara Pit. 



BJiabdocarpvs elongatns Kid- 



Thick Coal. 



Newdigate Collierv. 



ston. 



Thick Coal. 



Chilvers Coton Clay-pit. 



Ikcert^ Sedis, 







Bark of unknown plant. i Eydcr Coal. 



Arley Colliery. 



The Calamites from "Warwickshire are of particular interest, 

 because, in addition to the common mode of preservation as medul- 

 lary casts, it is not unusual to find specimens preserved in the 

 much rarer condition of casts of the external surface of the plant. 

 Several examples of such external casts have been collected ; they 

 belong to the following three species : — 



Calamites GCEPrERTi Ettingshausen. A specimen from the 

 Ryder Coal at Arley Colliery shows two nodes, each furnished with 

 a verticil of branch-scars ; these are separated one from the other 

 by six barren nodes, on one of which a solitary branch-scar is borne. 

 A typical example of this species from above the Thick Coal in the 

 Griff Clay-pit is figured in PL LYII, fig. 10. 



CalajMITes eamoses Artis. An external cast of this plant from 

 the Thick Coal of the Griff Colliery, Clara Pit, has very rough 

 internodes marked by longitudinal lines ; and, in places where the 

 coaly film has been stripped off, a meshwork of large rectangular 

 cells may be seen. 



Calamites seckowi Erongniart. With some doubt I refer to this 

 species an external cast of a Calamite from the Ryder Coal of 

 Arley Colliery. The short, wide internodes are marked with large 

 irregular, longitudinal cracks, and with fine regular striae which 

 run in the same direction. One node has a verticil of contiguous, 

 circular branch-scars, each of which measures about 8 centimetres 

 in diameter, and has a nipple-like central portion projecting above 

 the surface of the x)lant. 



