Gallery 
VIII. 
Table-case 
32 . 
Wall-case 
18 . 
Table-case 
32 . 
Wall-case 
17 . 
Table-case 
31 . 
Wall-cases 
17 & 18 . 
Wall-case 
17 . 
(3*2 GUIDE TO THE FOSSIL INVEETEUEATE ANIMALS. 
with its net-like arms, and J'clalocrinus witli each arm 
like a solid ian. Then come crinoids in which the 
lood-grooves were covered over and siudc beneath tlie 
covering ol the cnj); these are called Cameruta or vaulted 
crinoids. Among them J^erirchocrinnH, with its large cu]) 
and bead-like stem, is the commone.st. In IJncal 
wing-like processes grew u|) from the lid of the cu}) and 
I'ormed recesses into whicli the arms were received when 
Iblded. Slal)S containing many of these crinoids are on the 
lowest slojie ol Wall-case IS, and show how in those days 
many forms belonging to different genera and .species lived 
(do.se together. Here are also .several s])ecimens from 
N. America and Dohemia. The most remarkable \s, Hcyphn- 
crimis, which had an enormous and apjiarently top-heavy 
croAvn ; its stem, howcvc'r, was attached to a large liollow 
l)all (the Loholith ol Ikirrande) wliich probably served as <i 
lloat, .so that tlie crinoid luing crown downwards. 
The llritish Devonian Crinoids are not well preserved. 
llcxacrinus is the most cons]iicnous. Some foreign ones 
iire in the Wall-ca.se, lait tlie most remarkable are the 
slender forms preserved in pyrites, from the Lower Devonian 
slates of the Rhine district. 
The Rritish Carboniferous Crinoids come mostly from 
the neighbourhood of Rristol, from Derbyshire, Yorkshire, 
and Lancashire. Most of these are Camerata, among which 
Actinocrinus and Aviphonterinns are well-known types. 
The type-specimen of ActinocrinuH loricafus, Schlotheim, is of 
interest as the first British crirndd calyx ever figured, and as 
having a longer history than almost any other specimen in 
this Museum. Described by J. Beaumont in 107(3 as a root, 
it was called the Nave Encrinite by J. Parkinson (1808) and 
wrongly, referred to Actinocrinm triaconfadadylus by J. S. 
Miller. Another common genus is rhUyerinus. The crinoids 
of this epoch are even more abundant in Nortli America, 
and some exceptionally fine specimens are shown. One 
may note Gilbert socrinus with its strange drooping appen- 
dages, the spiny Dorycrinus, and Encladocrinus with a 
twisted stem like that of riatycrinus. 
Triassic Crinoids are not found in Britain, but are 
fairly abundant in the Tyrol and in Bakouy, from both 
which places the IMuseum possesses excellent series. The 
best known form, however, is the Lily Encrinite, Encrimis 
liliiformis, from tlie IMuschelkalk of Oermany. 
Conspicuous among Jurassic Crinoids is Fentacrinus, of 
