
UPPER LUDLOW GROUP. 
187 

Names and References; Observations, &c. 


Cee Reference to McCoy’s 
Drawers.| Synopsis: and Figures of Genera. 
Gf? Appendix, p. vii. 
ful species. 
Gf? Cycloceras, p. 320. 
Pl. 11, fig. 31. 
Gf? O. laqueatum, p. 315. 
Gf (Cycloceras), p. 321. 
Gf? 
Gf p. 315. 
Giv O. subundulatum, p. 317. 
Gf7 p- 314. 
Appendix, p. vil. 
Gf’? Pi it, fe. 27; ps dls: 


Appendix, p. v1. 
Hortolus Ibex, p. 324. 

Orthoceras torquatum, Miinst. Salter in Ap- 
pendix, p. vii. McCoy considers this a doubt- 
I do not. 
Orthoceras tenuiannulatum, McCoy. Rings 
slender, and striz equal. 
Orthoceras, sp. with fine thread-like ridges. 
(O. filosum, young ?) 
Orthoceras tracheale, Sow. (Siluria, 2nd ed. 
pl. 34, fig. 6). 
Orthoceras imbricatum, Wahl. (Siluria, 2nd 
ed. pl. 29, fig. 7). 
Orthoceras, new, large; ten times the size of 
Portlock’s shell. 
Orthoceras dimidiatum, Sow. (Siluria, 2nd ed. 
pl. 28, fig. 5). Easily known by the squa- 
mate ridges reaching half across only. 
Orthoceras baculiforme, Salter, Appendix to 
Synopsis. The smooth species are difficult, 
but not unrecognizable. This is oval in 
section and very long and tapering indeed. 
Orthoceras perelegans, Salter (Mem. Geol. Surv. 
Vol. 1. Pt. 1, t. 13, figs. 2,3). McCoy in his 
attempt to combine the disjointed figures 
of this species, Orthoceras Ibex and Ortho- 
ceras tracheale, has again confused the irre- 
gular curving Orthoceras? perelegans with 
the straight shell O. tracheale. 

Numbers and Localities, 
c. 38, Benson Knott, 
c. 39, Brigsteer, Kendal. 
c. 40, Kirkby Moor, Ken- 
dal. 
c. 41, Kirkby Moor; c, 42, 
near Ludlow. 
c. 43, Kirkby Moor, near 
Kendal. 
c. 44, High Thorns, Under- 
barrow. 
c. 45, Brigsteer. 
c. 46, Brigsteer (the small- 
er specimen is coated with 
tubercular sponge, c. 47). 
94-9 
