VINE : NOTES ON YOKEDALE TOLYZOA. 
details and illustrations furnished by Dr. Duncan and Mr. Jenkins, 
will always be regarded by special workers as most unique. 
Localities and Horizon : Yoredale ; Holker Park, Gleaston 
Castle, Little Urswich ; in the shales of Northumberland and Halt- 
whistle ; Hurst. Common in all localities wherever F. nodidoaa is 
found. 
Genns PiNXATOPORA, Vine. 
= Glauconome sp. of authors. 
1883. Pinnatopora n. geu , Vine, Brit. Assoc. lie]). Fobs. Polyzoa. 
1S84-5. Pinnatopora, Vine, Naturalist, pp. GO-315. 
Zoariuni pinnated, with secondary branches, likewise pinnated, 
but rarely fenestrated by the inosculation of pinni^. ZocRcia tubular, 
arranged biserially, originating immediately beneath, or in a line 
with the keel. Carina feebly developed in some, well developed in 
other species, ornamented with the bases of spines or plain. Omcia (?) 
an inflated cell. 
7. Pinnatopora oenata n. sp., p. X., figs. 1, 2, 3. 
Zoarium consisting of a broad central branch with faintly 
devoloped pinnae, but of unknown dimensions. Central branch: 
the superficies of this are unlike any other ordinary species of 
Pinnatoporce, ornamented with three keels, a central one, and one on 
either side but near to the margins, beyond which the lateral pinnae 
are faintly developed. Zocccia oval, or slightly elongated, alternate, 
arranged in lines on either side of the central keel ; the margins of 
the zosecia are ornamented with prominent, but delicate tuberch^s, 
from ten to fourteen, and in some cases sixteen in number, wirli 
occasionally an intercallated tubercle just within the marg-in of the 
orifice on the distal part. Carina, central one angular or slightly 
rounded, occasionally depressed with one or more rows of contiguous 
tubercules, delicate ; lateral keels similarly ornamented ; average 
number of tubercles in a row between the pinnas, from twelve to 
eighteen. Reverse of branch rounded (normal) ornamented with 
from eight to ten rows of feebl}^ tuberculated ridges, sometimes 
very prominent. Pinnm (?) in their earliest stage fluted. 
Horizon : Yoredale rocks of North Lancashire. 
Localities: Holker Park, Gleaston Castle. 
This most beautiful species I have only, as yet, found in the 
