FLOOR-] 
FOSSILS. 
37 
Window-recess Case, is a series of these once abundant forms of stalked 
Star-fishes, now so exceedingly rare in a living state. They are repre- 
sented by forms from the Silurian, Carboniferous, Liassic, Oolitic, 
and Cretaceous formations. The most noteworthy are the Crotalocrinm 
rugosus, from Dudley; the group of heads of Pentacrinus briareus, from 
Charmouth, Dorset ; the series of Lily Encrinites {Apiocrinus Park- 
insoni), from Bradford; and of Marsiqntes Milleri, from Kent and 
Sussex. 
In the Window Case, between Table Cases 16 and 17, is arranged a 
series of Fossil Star-fishes from the Silurian, Oolitic, Cretaceous, and 
Tertiary rocks. 
Sea-urchins {EchinidcB). Case 22, Room VI. These are arranged 
in four principal groups. 1. Those from the Tertiary strata, of which 
the most remarkable are the large Clypeasters from Malta. 2. The 
Chalk EcJmiidcB, amongst which are the Helmet-urchins {Ananchytes), 
popularly known as "fairy-loaves;" the Heart-urchins (Spat any idee), 
called "fair^^-hearts;" and numerous species of Cidaris, provincially 
termed *' shepherd's crowns ;" some of the specimens have spines 
still attached to the shell. 3. The Jurassic or Oolitic Echinidce, and 
the Sea-urchins from the Trias and older rocks, which include many 
singular forms of the spines or locomotive organs. 
ORns [Annelida) . One half of Case 18, Room V., is occupied 
with examples of the tubes, or shells, of fossil Annelids (Serpiilce). 
One species, known as the Vermicularia Bognoriensis, makes an almost 
regularly convoluted tube, like a snail-shell ; a mass composed of these 
tubes is placed in this Case. 
FossTL Insects [Articulata). The other half of Table Case No. 18,. 
Room v., contains the Insect remains, consisting of the wing-covers 
[elytra) of beetles from the Oolitic strata of Purbeck and Stonesfield, 
and Dragon-flies (some in their larval state), from Solenhofen and 
(Eningen. There is a wing of a large flying insect, resembling the 
living Corydalis of the United States, in a nodule of clay-ironstone 
from Coalbrook Dale. Insect remains in amber from Stettin, on the 
Baltic, are also here displayed. 
Fossil insects may be seen in some of the specimens of amber in 
the Table Case No. 60, Room I. 
Crustacea, — Crabs and Lobsters. Cases 7 and 9, Room VI^ 
contain the exhibited portion of this class. The first half of Case 9' 
contains the Cirripedia, represented at the present day by the Ship 
Barnacle and the Acorn-shell. The second, contains the Bivalved 
Crustacea, Phyllopods and Ostracods ; and a portion of the Trilobites ;. 
the remaining portion being in Table Case 7. In the adjoining Win- 
dow-recess Case is exhibited a series of Crustaceans belonging to 
the Eurypterid(B and Limidida;, or King-Crabs. The gigantic Euryp- 
teridcB are extinct, but the King-Crab is found living at the present 
day. Fme examples of Limulus, from Solenhofen, and of Slimonia, 
from Lanarkshire, are placed on Case 9. 
Case 7 contains the Trilohita, the Isopoda, and the Decapoda (Crabs 
and Lobsters). Of the Trilobites, bj far the greater part are from the 
