223 
III. Thenarocrinus callipygus. 
The specimens on which the following description is based 
are as follows : — 
In the British Museum : 
48049, a perfect specimen from root to crown, seen from 
anterior ; bought of Mr. B. M. Wright. (PI. X. 
fig. 4.) 
57478 a, crown and 1 inch of stem, seen from R. side, anal 
plates just shown on L. of specimen ; bought of Mr. 
S. Allport. (PI. X. fig. 3.) 
57478 5, crown and | inch of stem, seen apparently from L. 
side ; arms broken at postpalmars leave ventral sac 
exposed ; bought of Mr. S. Allport. (PI. X. 
fig. 50 - 
In Dudley Museum : 
One specimen ; arms preserved up to postpalmars ; cup 
crushed ; about 2 inches of stem, somewhat broken ; 
orientation uncertain. (PL X. fig. 7.) 
In Mason College Museum, Birmingham : 
138, crown and inch of stem, seen from posterior; arms 
broken off after postpalmars, showing J inch of 
ventral sac ; rest of sac broken aw r ay ; cup frac- 
tured. (PL X. fig. 8.) 
144, crown and ^ inch of stem, free from matrix, flattened in 
antero-posterior plane ; arms preserved up to post- 
palmars 4* ; on R. side ventral sac shows through 
arms. (PL X. fig. 1.) 
153, crown and f inch of stem, free from matrix except at 
distal ends of arms ; much rolled but not flattened, 
cup fractured. (Pl. X. fig. 2.) 
These three specimens were in Mr. Charles Ketley’s 
collection. 
In the collection of William Madeley, Esq., of Dudley : 
One specimen, seen from anterior ; arms preserved up to 
postpalmars 3 ; 1| inch of stem, slightly crushed. 
(PL X. fig. 9.) 
In the collection of Charles Holcroft, Esq., of Kingswin- 
ford, near Dudley : 
293, a young specimen ; crown and J inch of stem, seen from 
* I use the expression “ postpalmars 2, 3, 4 &c.” for postpalmars of 
the second, third, fourth, and subsequent series. “ Postpalmars ” alone 
signifies the first series. 
