176 
SILURIAN. 

Case and 
Column of 
Drawers. 
Reference to McCoy's 
Synopsis: and Figures of Genera. 

Gf 
Ge9 
Gf10 
Ge9 
Ge9 
Gf10 


Pl. 1 D, fig. 7, undescribed. 

G. ludensis, p. 4. 
p. 24. 
p. 25. 
p. 24. 
Nebulipora, p. 24. 
PIM cig. 

Trachyderma ? levis, p. 138. 
S. longissimus, p. 132. 
Pl. 1D, figs. 11, 12, p. 182. 
Names and References; Observations, &c. 


Numbers and Localities. 

Tetragonis Danbyi, McCoy. Oval with rect- 
angular are produced by the vertical and 
horizontal fibres. 
HYDROZOA. 
(BRYOZOA or POLYZOA.) 
Graptolithus priodon, Bronn(G.ludensis,Murch.). 
ZOOPHYTA, (Cwlenterata). 
Stenopora fibrosa, Goldf. (Pet. Germ. t. 28, fig. 3). 
Stenopora fibrosa, var. regularis, McCoy. 
Stenopora fibrosa, var. lycopodites, Hall? (Pal. 
N.Y. Vol. 1. pl. 23, figs. 1—3). Probably not 
the true Bala variety. 
Nebulipora or Monticulipora papillata, McCoy. 
Growing round Orthoceras, a common habit 
of this very pretty species. The bosses are 
free from cells. 
ECHINODERMATA. 
Few in this formation. 
ANNELIDA. 
Tube-covered worms abound in Ludlow rocks. 
Serpulites, Murch. Easily distinguished by 
the nacrous shelly cover, with two flattened 
sides and the edges only thickened. The 
shell is very often covered with a lace-like 
network of hexagonal areole, apparently or- 
nament. 
Serpulites longissimus, Murch. (Siluria, 2nd 
ed. pl. 16, fig. 1). A long shelly tube, curved 
into nearly a circle. Trach. levis is pro- 
bably from a Ludlow locality and this 
species. 
Serpulites dispar, Salter (Appendix A. page 1) 
Thin membranous tubes, contrasting strongly 
with the thick edge. 


b. 57, Benson Knott. 
b. 937, Burton and Brock- 
ton. 
b. 938, Woolhope. 
b. 939, Woolhope; b. 940, 
Kendal. 
b. 941, Woolhope. 
b. 3, Brigsteer; b. 55, b.155, 
Sedbergh (Firbank). 
b. 154, Aymestry, nearly 
perfect ; b. 942, near Lud- 
low; b. 948, Burton and 
Brockton. 
b. 941, N. of Benson Knott; 
b. 156, Scalthwaiterigg, N. 
end of Benson Knott. 
