VINE : POLYZOA OF REDESDALE. 



65 



Nickles, the discoverer, said that Mr. Ulrich had named it in his 

 honour, and I have no wish to disturb the name. In all probabiHty 

 specimens will be found in other Northern Shales, and whenever 

 found it might easily be mistaken for a specimen of H. Biiskii.' The 

 difference will be found in the shape of the orifice of the cell, and 

 also in the peculiar punctures under the area of the cell. 



Sub-order cryptostomata Vine. 

 Fourth Brit. Assoc. Rep. on Foss. Polyzoa, 1883. 



ZocECiA tubular, subtubular, in section (occasionally) slightly 

 angular. Orifice of cell surrounded by vestibule, concealed. 



Fam. ARCANOPORIDAL Vine. 

 In a genus founded for the reception of certain obscure forms — 

 Arcanopora — (Abstracts of the Geo. Soc, London, No. 424, June 



1882, p. 109. For Silurian and Carboniferous Species) — I placed 

 the Fiustra} parallela Phill. The species has been variously 

 located, as Sulcoretepora by M'Coy — and as Cystodiclya Ulrich — 

 In the last paper of Mr. Ulrich — April 1884 — (Journal of Cincin. 

 Soc. Nat. History. Genus published, Oct. 1882) — he places the genus 

 Arcanopora Vine, as a synonym of Cystodictya. My own name 

 has several months priority of his, though the description was not 

 properly published until I published it in full in my B. A. Report, 



1883. I have no desire to press my claim for the above genus, 

 especially as species are much more abundant in the American 

 Carboniferous series of rocks than in our own. 



CYSTODICTYA Ulrich. 

 Jour. Cincin. Soc. Nat. Hist., April 1884. 

 — Arcanopora Vine : Fourth Brit. Assoc. Rep. Foss. Polyzoa. 

 ' ZoARiUM like Slfcfopora, but with wider interstitial spaces. 

 Sections show that the intertubular spaces are occupied by a 

 vesicular tissue. Sub-carboniferous.' (op. cit, October 1882.) 

 9 Cystodictya parallela Phill. sp. 

 = Flustra ? id. Geol. Yorkshire. 

 =: Sulcoretepora id. M'Coy and authors generally. 

 This well marked Carboniferous species has a very wide distri- 

 bution in British Carboniferous rocks, and I am glad that Mr. Ulrich 

 has been able to identify the species in American Carboniferous rocks 

 also. It is present in the Northern Shales, though not by any means 

 abundant. As Mr. Ulrich says, sections of the species show that 

 between cells — or in the intertubular spaces — a loose vesicular tissue 

 may be observed, and though not so apparent in the American species 

 C lineata Ul, its presence shows how closely the American is related 

 to the British form. 



Oct. 1884. 



