174 THE GEOLOGICAL AGE OF CENTRAL AND WEST CORNWALL. 



BRACHIOPODA. 



1. Atryjja aspera f A. reticularis) — {BIcCoy), Fowey ; Menabilly, 



Looe and Pridmouth. Cambridge collection. The 

 species A. reticularis ranges from the Bala to the Carb. 

 Limestone. 



2. Strophotnena depressa. Fowey. Specimen said by McCoy to 



be in the Mus. Prac. Greol. Lond. Caradoc, Ludlow, 

 according to Murchison. 



3. Oriliis circularis? {McCoy), Looe and Fowey. 



4. Orthis resupinata — {McCoy), Fowey. 



5. 0. lonyisulcata. — {McCoy), Looe ; Polruan, Pattison 1850. 



Phillips records this species from S. I'etherwyn. 



6. 0. persarmentosa — {McCoy) ; this probably is the same as the 



fossil described as Spirif. pesarmentosa, Looe, Polruan 

 and Fowey. 



8. Orthis hipfarionyx fVanux.J Looe and Polperro. Davidson. 



9. Leptoena .^ Looiensis f Dav.J Looe and Polperro. This species 



does not appear to have been met with elsewhere in 

 Cornwall, but according to Mr. Davidson it is common 

 at Looe, behind Saltram Cove at Paignton, and at the 

 Smuggler's Cove at Torquay. It differs from Leptoena 

 laticosta, for which it has been mistaken. 



10. Strei'torhynchus gig as {McCoy) Polruan. Davidson figures it 



in Fal. Soc, xviii, and gives the horizon as Lowest 

 Devonian. A specimen from Looe marked strophomena 

 gigas in the Penzance Museum. 



11. Streptorhynchus pesarmentosus — Polruan. Davidson, P«/. Soc, 



xviii. 



12. String ocephalus giganteus — Fowey, Peach 1844. A genus 



generally considered to be exclusively Devonian. 



13. Rhynchonella nucula (described by old authors as Terehratula 



nucula). Polruan, Peach 1844. Murchison gives its 

 range as Llandeilo to Ludlow. 



14. R. pugnus. Fowey, Peach 1844. 



15. R. Pengelliana {Dav). Looe and Polperro. According to 



Davidson " a very large and characteristic species "). 



1 



