CATALOGUE OF GEOLOGICAL SPECIMENS FROM ENGLAND. 



Many of the Silurian Specimens having been labelled for several 

 years, some changes in the nomenclature are necessary, as well as 

 in the names of the formations to which the species are assigned. 

 Instead of relabelling them, the following list is subjoined, to 

 apply to those species marked with an *. The names will be found 

 for the most part to agree with Morris's Catalogue, 2d edition, 

 1854, to which reference is made for the authorities. 



f The Llandeilo flags are now ascertained to be everywhere 

 below the Caradoc or Eala rocks ( " Lower Silurian" in lists). 



*LiNGULA PHILLIPSII ( mss.), Llaiideilo (not Lingula) flags. 3 

 Aberciddy bay, Pembrokeshire. 



*Bellerophon perturb atus, Llandeilo flags. 1 



Aberciddy boy. 



*Orthis flabellulum, var. Lower Silurian ( Bala or Caradoc). 2 

 Llynn-Ogwen, Snowdon. 



* — vespertilio, do 



* — ACTONI^, do 



Ireland. 



*Leptjena sericea, do 



* — TENuiciNCTA (M'Coy), do 

 *Strophomena expansa, do 



* — antiquata ( Sowerby), Lower Llandovery rocks. 



Haverford-west, Pembrokeshire. 



*Atrtpa marginalis, Lower Silurian ( Bala limestone. 



Ireland. 



*Serpulites, tubes of ; do 



