VINE: NUTKS OJ^ YOKED ALE rOLVZUA. 
95 
Family Cystodictyonid.E, Ulricb. 
Jour. Ciucin. Soc, Nat. Hist., April, 1884, p. lU. 
Fam. Arcanoporidce, Vine, Naturalist," Oct., 1884, p. G"), and Fourth 
Brit. Assoc. Rep. Foss. Polvzoa, 1888. 
For reasons given in the above I have ah-eady suppressed the 
Family name. As the name was founded upon, and applied to, 
British examples alone, the combination of Genera was not, perhaps, 
the happiest. The interstitial spaces between the cells, however, 
being occupied by " vcrsicular tissue," both the Family and Generic 
terms are by far the most natural. 
Genus CysTODICTYJE, Ulrich. 
(Op. cit.^ above, p. 36, Hp., 1884.) 
= Arcanoj^ora, Vine; Fourth B. A. Rep. Foss. Polyzoa. 
31. Cystodictya takallela, Phill. 
= Flustra? parallela, Phill., Geol. Yorksh. 
= Snlcorelepora id., M'Coy, and authors generally. 
Cystodicti/a id., Vine, " Naturalist," October, 1884, p. G5, Sept., 
1885, p. 317. 
This form is well distributed in Biitish rocks, and Mr. Ulrich 
says that he has identified the form in the Keokuk group (Lower 
Carboniferous) of Kentucky, and he says " the American specimens, 
though a little longer, agree closely in other respects with authentic 
British examples. 
Localities^ <&c. : Yoredale ; Gleaston Castle, Ilolker Park. N. 
Lancas., Hurst, W. Yorks. 
32. Cystodictya earicosta, M'Coy 
= Vincularia raricosta, M'Co}'. 
There are present in the North Lancashii-e shales a few 
fragments that are very similar to the Scotch examples of this 
species, but at present, I am unable to say whether C. raricosta can 
be sustained. The Cf/stodictvfr are a very var-iable group, and at 
some future time it may be well to direct special attention to 
American and British forms. 
Localities. (L'c: Yoredale; Holker Park, North Lancashire. 
Family Ilyphasmoporida: (?) Provisional. 
33. Hyphasmopora, Buskii, Eth., Juu. 
Ann. Mag. Nat. Hist., Ser. 4, Vol. XV., pp 48-4o, pi. IV., figs. l-S. 
