Case and 
Column of 
Drawers. 

Gi 
Gi 


Reference to McCoy’s  _ 
Synopsis: and Figures of Genera. 

Worm-burrows. 
Pl. 1A, fig. 1—3. 

Phyllopods. 

-Dichograpsus octobrachiatus, 


ARENIG OR SKIDDAW GROUP. 
21 

Names and References; Observations, &c. 
Numbers and Localities. 

Hall (Grapt. 
Quebec Group, pl. 7, 8). D. aranea, Salter. 
Dichograpsus, sp. A fine large branching spe- 
cies, with long nodes to the branches. 
Dichograpsus Sedgwickii, Salter (Geol. Mag. 
Vol. Iv. p. 74. Quart. Journ. Geol. Soc. 
Vol. xix. p. 187, fig. 11.) 
Dendrograpsus furcatula, sp. Salter (Mem. 
Geol. Surv. Vol. m1. p. 331, pl. 11 a, fig. 5). 
For genus see again Lower Ludlow Rock. 
The branches are tufted irregularly and 
branch repeatedly. 
Dendrograpsus arbuscula, Salter MSS. A small 
species. 
-ANNELIDA. 
Palzochorda, McCoy. Supposed by some to 
be marine plants; but evidently the filled- 
up burrows of marine worms. 
Helminthites and Scolites, Salter. The filled- 
up burrows and surface-trails of marine 
worms, without impressions of any lateral 
appendages. 
Scolecoderma (a worm-tube). See Mem. Geol. 
Surv. Vol. 111. p. 292. 
CRUSTACEA, PHYLLOPODA AND 
TRILOBITA. 
Caryocaris Wrightii, Salter (Quart. Journ. Geol. 
Soc. Vol. xx. p. 139, fig. 15). A small 
shrimp-like creature, an inch in length; 
the carapace 2-valved. 
Primitia? sp. A bivalve entomostracan. 
Middle Bala for genus.) 
(See 

Skiddaw. 
a. 46, Skiddaw Slate. 
(From Bryce Wright.) 
[Skiddaw Slate. The sp. 
is easily obtained, and is 
characteristic. | 
a. 44, Ty Obry, Portmadoc. 
a. 295, Whitesand Bay, 
St. David’s. (Dr. Hicks.) 
Blakefell, Cumberland. 
Scaw Gill, Cumberland, 
Blakefell. 
a. 47, Skiddaw Slate. It 
occurs at Causey Pike and 
Grassmoor, Cumberland. 
a. 48, Ty Obry, Portmadoc. 
(Mr. Ash.) 
