344 PROCEEDINGS OF THE GEOLOGICAL SOCIETY. [Feb. 26, 



Ostrea cymbium, LamJc. Portree. 



obliquata. Eaasay. ~| 



Hippopodium ponderosum. Eaasay. | From passage 



Pinna folium. Eaasay. beds. 

 Cucullsea Miinsteri. Eaasay. j 

 Ebyncbonella tetrahedra. Portree. 

 variabilis. Portree. 



Zone of Ammonites margaritatus. — On the south side of Portree 

 Harbour this palaeontological horizon is constituted of bluish mi- 

 caceous sandstones thinly bedded, and containing lines of very large 

 blue calcareous nodules and septaria. 



Fossils. 

 Ammonites margaritatus. Eaasay, Portree. 

 Belemnites umbilicatus. Raasay. 



breviformis. Kaasay. 



■ longissimus. Eaasay. 



Tectaria Graudryana. Portree. 

 Chemnitzia Blainvillei. Portree. 

 Pecten sequivalvis. Portree, Eaasay. 



liasinus. Portree, Raasay. 



strionates. Eaasay. 



Avicula novemcostse. Portree, Eaasay. 



cygnipes, Eaasay. 



Lima Hermanni. Eaasay. 

 Limea acuticosta. Portree. 

 Pleuromya ovata. Eaasay. 

 Pholadomya ambigua. Eaasay. 

 Mytilus scalprum. Eaasay. 

 Leda graphica. Eaasay. 

 Ostrea cymbium. Eaasay. 

 Plicatula spinosa. Eaasay. 

 Cypricardia cucullata. Eaasay. 

 Macrodon liasinum. Eaasay. 

 Arcomya arcacea, Seeb. Eaasay. 

 Ceromya liassica, Moore. Eaasay. 

 Lingula Voltzii. Eaasay. 

 Ebyncbonella acuta. Eaasay. 



subconcinna. Portree. 



tetrabedra. Eaasay. 



Terebratula punctata. Eaasay. 

 Spiriferina Miinsteri. Eaasay. 



rostrata. Eaasay. 



Eryma propinqua, Opp. ? 

 Pentacrinus amalthei. Portree.' 



Zone of Ammonites sjoinatus. — Hard calcareous sandstone, yel- 

 lowish-grey, thick-bedded, exterior surface honeycombed, contains 

 large reddish-brown lenticular and indurated masses on the south 

 side of Portree Harbour; it measures about 40 feet in thickness. 

 In this section the upper 5 feet are bluish and more calcareous, and 

 thus approximate to the basal limestone of the Upper Lias. Else- 

 where it presents the same lithological features, and the same cha- 

 racteristic species. 



Fossils. 



Ammonites spinatus (v. c), A. margaritatus (r.). 



Belemnites paxillosus, P. elongatus, clavatus, microstjlus. 



Cryptsenia expansa. 



