J. Smith — IT. Silurian Entomoatraca. 73 



been split through the middle shows a concentric laminated structure.^ 

 On washing some of the rotted limestone from the Much-Wenlock 

 quarries, I found these pearls (?) very abundant. 



Foraminifera (?). — Lagena-like bodies were got from the gatherings 

 at Lincoln Hill, the Eailway-cutting by side of the Severn, Benthall 

 Edge, Woolhope, and Dormington. 



Conodonts. — At the Wren's Nest, Dudley Tunnel, Benthall Edge, 

 Lincoln Hill, Gleedon Hill, and Dormington Wood, a few Conodonts 

 were found in the washed shale. Conodonts are very abundant in 

 a rotted limestone (Upper-Silurian) near the Craven Arms. No 

 Entomostraca were found in this rotted limestone. 



Sponge -spicules. — From the gatherings at the Wren's Nest, 

 Lincoln Hill, Benthall Edge, Dormington Wood, and Malvern 

 Tunnel, a few three- and six-rayed Sponge-spicules were got. 



Spicules of Syalonema (?) are very abundant, along with the 

 Conodonts, in the rotted limestone near the Craven Arms. 



IV. — List of Species (provisional) of Bivalve Entomostraca, etc., collected by 

 Mr. J. Smith, of Kilwinning, from the Upper- Silurian Formations of Shropshire. 

 By Professor T. Rupert Jones, F.R.S., F.G.S. 



1. Blue Holes, Rushall Canal, Walsall. 



Beyrichia Klcedeni, M'Coy, var. intermedia, Jones. 

 ,, ,, M'Coy, var. subtorosa, Jones. 



2. Sedgley. 



Primitia Rcemerzana, Jones & Holl. 



Cythere corbuloides (?), J. & H. 



Lagena vulgaris, Williamson, var. clavata, D'Orb. 



Pearls (?). 



3. The Wren's Nest, Dudley. 



Primitia variolata, J. & H. 

 Beyrichia Klcedeni, M'C. 



„ ,, „ var. tuberculata, Salter. 



Spirorbis. 

 Conodonts. Spicules. 



4. Dudley Castle Grounds. 



Primitia Rcemeriana, J. & H. 

 Beyrichia Klcedeni, M'C. 



,, „ var. torosa (with large lobes), Jones. 



Cythere, sp. 



5. Dudley Tunnel. 



Pfimitia Salteriana, Jones (? = P. prunella, Barrande). 



Beyrichia, sp. ? 



Cytherella, sp. 



Cythere bilohata (?), Mfinster. (A Carboniferous form.) 



Conodonts. 



6. Railway-cutting, Coalbrookdale. 



jSchmina cuspidata (?), J. & H. 

 Primitia variolata (?), J. & H. 

 Beyrichia Klcedeni, M'C. 

 ,, „ var. ? 



7. Railway-cutting by the side of the Severn, Ironbridge. 



Prim.itia renulina, J. & H. 



,, variolata, J. & H. 



,, Salteriana, J., var. (bituberculate) ? 



,, sp. (Long, like P. protenta, J., but without the two tubercles; and like 

 P.fusus, Barrande, but more cylindrical). 

 Kirk by a, sp. ? 

 Beyrichia Klcedeni, M'C. (In old and other conditions.) 



,, ,, va.v. intermedia, ^. (With a big lobe.) 



„ ,, var. .' 



1 Some small spherical bodies regarded as fossil pearls y^ere described and figured 

 by Prof. John Morris, in the "Annals JNat. Hist." for August, 1851. One specimen 

 was from a Jurassic Gryphtea, obtained from the Drift at Muswell Hill near London ; 

 and the others were from the Chalk of Kent. 



