224 Mr. F. A. Bather on British Fossil Grinoids : 
L. posterior side : distal ends of arms worn away. 
(PL X. fig. 6.) 
431 , a much weathered crown, greatly crushed in the trans- 
versal (or lateral) plane ; free from matrix. 
For the ready loan of the specimens in their possession my 
best thanks are due to Mr. Holcroft and Mr. Madeley. I 
have also to thank Mr. Madeley, in his capacity as Secretary 
of the Dudley and Midland Geological Society, for lending 
the specimen belonging to the Dudley Museum. For fur- 
nishing the specimens from the Mason College Museum, Prof. 
Charles Lap worth is to be thanked. Finally, for permission 
to figure the specimens in the National Collection, I am in- 
debted to Dr. Henry Woodward, F.R.S. 
These specimens all appear to come from the Upper or 
s( Thin ” bed of the Wenlock Limestone of Dudley, concern- 
ing which I am favoured by Mr. Madeley with the following 
note : — u This bed is far more prolific of Crinoids, both as to 
number and variety, than the Lower or ‘ Thick ’ bed, and 
all those well-preserved specimens where the fossil lies on a 
thin bed of fine shale on the top of the limestone come from 
this Upper or Thin bed of the Limestone.” 
Generic Diagnosis. 
IB. 5 ; B. 5 ; R. 5 ; Anns simple, dichotomous ; R / in 
Basal circlet, resting on r. post. IB. ; x rests on post. B. and 
R', and only just reaches top of Radial circlet. 
This arrangement of the anal plates, combined with the 
great proportional width of all the other plates of the dorsal 
cup and with the flat broad backs of the proximal arm-ossicles, 
produces a very flat appearance, and the fossil, as it lies 
stretched on the rock, resembles the outspread palm of a 
hand ; hence the proposed generic name, from Oevap , the 
palm. 
Since all the above-mentioned specimens appear to belong 
to one species, the foregoing characters are the only ones that 
can be definitely taken as generic, and the following detailed 
description applies to both genus and species. 
Detailed Description. 
Dorsal cup, broad and composed of thin plates. Specimens 
48049 B. M., 57478a & h B. M., 138 Mason College, 
144 Mason College, Dudley, and Madeley give the following 
average measurements: — Breadth at base 7T4 millim. ; 
