144 Mr. F. Chapman on some 
The specimens from Gotland are small detached corallites 
of the early stages of Syringopora. They are remarkably 
like Aulopora and Cladochonus in general appearance; and 
this bears out Messrs. Edwards and Haime’s statement that 
“ young specimens of this coral equally resemble Aulopora.” 
It has previously been recorded from Dudley and Benthall 
Edge in Britain and from Gotland. 
Silurian; Mulde, Gotland. Common. 
ECHINODERMATA. 
Sub-branch PELMATOZOA. 
Clas CRINOIDEA. 
[Some fragments of Crinoids were found in the washings of 
the Mulde clay, and Mr. Bather has been good enough to 
write the following note upon them.] 
Entrochus, gen. et sp. indet. 
A Crinoid stem-fragment of five columnals (PI. IIT. fig. 5), 
total length 5:5 millim., width 1°5 millim. ; each with slightly 
concave sides, marked, however, with faint pustules, tending 
to concresce into a ridge at half the height of each columnal. 
Lumen small and apparently circular. Facet (fig. 6) with 
about twenty-eight radiating ridges, not very marked or 
regular and not reaching the margin, so that the suture is not 
crenulate. 
Trochite, gen. et sp. indet. 
A series of six columnals of delicate and beautiful appear- 
ance. ‘The body of each is pentagonal in section, about 
-8 millim. wide, with small pentagonal lumen, the angles of 
which alternate with those of the columnal. The facet (tig. 9) 
shows five marked grooves (or the ridges that engage in those 
grooves, as the case may be, fig. 8) which pass from the 
angles of the lumen to the sides of the facet, which they 
bisect, and to a slight extent render the periphery quinque- 
lobate, reminding one of a ‘Tudor rose. The body of the 
columnal bears at half its height a thin flange, circular or 
slightly angular in outline, the angles in the latter case 
corresponding to those of the body of the columnal; total 
width 1°75 millim,; breadth of flange °5 millim. A similar 
flange is seen in certain Devonian columnals usually assigned 
to Khodocrinus, but on what evidence I know not. ‘ 
