Lower Bata Group (earthy dark slates and limestones). 
LOWER BALA GROUP. 
N. and S. Wales. 
bo 
~T 
S. Scotland. S. Ireland. 

Case and 
Column of 
Drawers. 
Gk 
Gk 
(case). 
Gk 
(case). 
Reference to McCoy’s 
Synopsis: and Figures of Genera. 
Syn. Pl. 18, f. 2, p. 6. 
ld 
LLDPE} 
ce 2», 

Pliz,f3,p4 
(G. Millepeda, Pl. 18, f. 6, p. 5.) 
Pl. 18, f. 4, 5, p. 6. 

(Grapt. Convolutus, p. 3.) 
Mead 
Names and References; Observations, &c. 
Numbers and Localities. 


Zoophyta or Bryozoa. 
Graptolithus, Auct. The simple one-sided 
Graptolites, with close-set cells, are the only 
species now called Graptolithus. The Grap- 
tolithus of Linnzeus, Syst. Nat. ed. 1, seems 
to be our Diplograpsus (Carruthers). 
Graptolithus Sedgwickii, Portlock, Geol. Rep. 
pl. 19, fig. 1—3; Harkness, Quart. Journ. 
Geol. Soc. Vol. vi. p. 60. A well-marked 
species, with curious straight spine-like pro- 
cesses to the cell mouths. 
Graptolithus Hisingeri, Carruthers (Geol. Mag. 
1868, p. 126). G. sagittarius, His. not Linn. 
There seems little doubt that Linnzeus de- 
scribed under this name a fossil plant instead 
of a graptolite. The species is excluded 
from all other strata except the Lower Bala 
(or Llandeilo flag), and is common therein. 
Graptolithus lobiferus, McCoy (G. Becki, Bar- 
rande). A form with the cell-ends so tumid 
as to give a very peculiar appearance. (@. 
millepeda, McCoy, is the young thereof, 
as suggested by himself.) 
Graptolithus Nilssoni, Barrande, Grapt. Bo- 
héme, pl. 2, figs. 16,17. Narrow stem, and 
short cells. 
Graptolithus tenuis, Portlock, Geol. Rep. 
Londondy. and Tyrone, p. 319, pl. 19, fig. 7. 
A narrow thin-stemmed short-celled species. 
Rastrites (Graptolithus) convolutus, Hisinger, 
sp. (Leth. Suec. t. 35, fig. 7). Rastrites 
triangulatus, Salter and Harkness (Quart. 
Journ. Geol. Soc. Vol. vit. p. 59). 
Rastrites peregrinus, Barr. may be the young 
of R. convolutus (Grapt. Bohéme, pl. 4, fig.6). 


Moffat, Dumfries. 
[A note at p. 366 of 
the Synopsis explains that 
the specimens labelled 
Lockerby are from various 
localities near Moffat and 
Beattock Bridge. ] 
Moffat, Dumfries. 
a. 59, Moffat. a. 58 (G. 
millepeda); do. 
Moffat, and common in 
N. Wales. 
a. 68, Moffat, Dumfries 
(common in 8. Wales 
also. J.W.S.). 
Moffat (not Lockerby), 
Sedgw. a. 60 (as G. con- 
volutus), Moffat, id. 
Moffat. 
