131 



boniferous series in Arran. The old red sandstone has not as yet 

 yielded any organic remains :* 



Plants. 



Stigmaria ficoides : Corrie sandstone ; Salt Pans. 



Sphenopteris ? Salt Pans. 



Calamites ? Corrie ; Salt Pans. 



Crustacea. 

 Phillipsia pustulata : Salt Pans, in red shale. 



Brachiopoda. 



Productus giganteus. Orthis resupinata. 



Spirifer bisulcatus. 



undulatus. 



octoplicatus. 



Scoticus. 



- spinosus. 

 latissimus. 



- Martini. 

 punctatus. 



lobatus. 



costatus. 



Chonetes variolata. 



lineatus. 

 papillionaceus ? 

 Rhynconella pleurodon. 

 Athyris ambigua. 

 another ? 



Avicula modiolaris. 



Monomyaria Dimyaria . 



pecten. 



Venus, two species ? 

 Nucula undulata. 



Nucula attenuata. 

 Cardium alaeforme. 

 Cypricardia rhombea. 



Gasteropoda. 

 Buccinum acutum : above Corrie, in red shale. 



ampullaria, do. 



Natica elliptica, do. 



variata, do 



Murchisonia? do. 



Bellerophon striatus, do. 



Cephalopoda. 

 Orthoceras (undetermined) : Corriegills, in sandstone, f 



unguis : Corrie, in shale. 



attenuatum : Salt Pans, in shale. 



Radiata. 

 Archaeocidaris Urii. 



Zoophyta. 



Cvathophyllum, two species ? 

 Lithostrotion Martini. 

 Cellapora Urii. 



Calamopora tumida. 

 Fenestella flustriformis. 

 Stems of Encrinites. 



The Scriden is a headland whose base is strewed with immense 



* Many of the best fossils on this list were collected by Mr. John Young, of the 

 Hunterian Museum, Glasgow. The trilobite was found by him at the Salt Pans in 

 September last. Nelson Mitchell, Esq., of Glasgow, who has carefully examined 

 the limestones and shales in several localities, has supplied several good species. I 

 owe also to his kindness many interesting observations on different parts of the 

 island. Several species have been kindly made known to me by Thos. Chapman, 

 Esq., of Glasgow. The species whose localities are not given are common to the 

 orrie beds and those of the north shore. 



f The sandstone is so much altered by the dikes which here traverse it that the 

 species cannot be exactly determined. 



