542 Dr. H. Woodward—On Arthropoda of Coal-measures. 
nodule of shale roughly triangular in shape, weighing 2lbs. 2z., 
and measuring 4 inches across. ‘This nodule has been successfully 
split open, and reveals upon its plane surfaces a long-tailed Bellinurus, 
lying in the centre of the transverse section of the walls and resting 
upon the surface of the node of a Calamite stem measuring 3 inches 
across, to its dark external border. The stem has been squeezed 
considerably out of its normal circular form into that of a nearly 
obtuse triangle, having two nodal buds, shown also in section at n., n., 
and traces of the woody tissue (xylem) may be observed along the 
margin at v., while outside (not shown in Fig. 2)is a dark carbonaceous 
band, doubtless representing the outer layer of the stem with traces of 
the linear leaves of the Calamite. 
Plants are nearly everywhere associated in these beds with the 
remains of Arthropods, suggesting fresh-water conditions and always the 
close proximity of land. The following is a list received from Mr. Robert 
Kidston, F.R.S., a year ago, of fossil plants determined by him from 
the Middle Coal-measures, Sparth, at a horizon 40 yards above the 
Arley Mine and 40 yards below the Neddy Mine. He had not seen 
the above-noticed specimen, which was obtained subsequently to his 
examination of the plants from Sparth. 
Dactylotheca plumosa, Artis, sp. Spiropteris sp. 
Mariopteris muricata, Schl., sp. Calamocladus equisetiformis, Schl., sps. 
Alethopteris lonchitica, Schl., sp. chareformis, Sternb., Sps. 
a valida, Boulay. Sphenophy yllum cimecifolium, Sthg., sps. 
Neuropteris impar, Weiss, sps. var. saxifragefolium. 
Oyclopteris trichomanoides, Brongn. Lepidophylium majus, Brongn. 
Fossil of doubtful affinity :-— 
Vetacapsula Coopert (Mackie & Crocker). 
The following is a brief description of Bellinurus longicaudatus :— 
Breadth of head-shield, or prosoma, 23mm.; length, 9mm. Deeply 
emarginate at the neck-furrow. ‘There is a strongly-marked raised 
rim around the prosoma, within which is a wide depressed border, 
which is continued round the latero-posterior margin of the cheeks to 
the nuchal furrow of the glabella. The glabella approaches nearly to 
the front border: of the head-shield and has a raised border around it,. 
forming a double arch in front with a V-shaped indentation on the 
median line, which is ridged down the centre; the neck-furrow is 
raised, strongly arched, and emarginated ; the compound eyes occupy 
a rather backward position on the raised lateral border of the glabella ; 
the genal portions of the shield are well-rounded without prominent 
cheek-spines at the postero-lateral angles; a raised rim haying 
a flattened border extends around the margin of the cheeks to the 
neck-furrow. There are faint indications of neck-spines at the posterior 
angles of the glabella (not shown in the figure). The opisthosoma, 
which is very indistinct, was probably 8mm. in length by 15 mm. in 
breadth, with a short spinose border to its segments; the telson 
measures 20 mm. in length, and is narrow and pointed. 
This is a very well-marked Limuloid, although imperfectly 
preserved; the head- shield is broader in proportion to its length than 
ds the case in most other species, and the cheeks are very rounded. 
It is to be hoped that other examples may be met with. 
