ZONE OF AMMONITES COMMUNIS. 87 



fragments of Pentacrinus. The shells were compressed moulds, which looked beautiful 

 when the clay was first split open, but as it dried, the fossils unfortunately broke into 

 fragments. 



4th. The Lcpt<rna bed is composed of a brown friable marl, one to two inches thick ; 

 it contains many species of small Rrachiopoda, belonging to the genera Lcplana, Spirifera, 

 and Tcrebratidd, and is separated from the upper beds of the ]\Larlstone by — 



5th. A thin band of blue and yellow clay, containing many Amvioniics fuldfer^ Sow., 

 Belemnites acuarius, Schloth., and Brachiopoda, as lihynchonella pygmaa, Moore. This 

 bed rests upon light-coloured marls of the Spinatus stage. 



From a railway cutting near Stroud, I have obtained many fine specimens of 

 Ammonites serpentvniis, Rein., and during the execution of works for drainage, and the 

 formation of a new road near Nailsworth, a good section of the Upper Lias was exposed ; 

 from the bands of limestone numerous fossils were obtained, d&Aunnonites communis. Sow., 

 A. bifrons,'^x\\^^., A. falcifer, Sow., ^, heterophi/Uus, Sow., A. cornucopia, Y. and B., 

 A. Lythensis, Y. and B., Belemnites compressus, Voltz., Nautilus latidorsatus, d'Orbig., 

 Turbo cajntaneus, Miinst., Pleurotomaria sub-decor ata, Miinst., Astarte lurida, Sow., 

 Posidonomya Bronni, Voltz., Nucula Ilausmanui, Roem., Gresslya yreyaria, Roem., Lima 

 bcllula, ]\Ior. and Lye, Lima giyantea. Sow., Ta?icredia laviuscula, Lye, and several 

 undescribed forms. 



The Upper Lias at Illminster, Somerset, has become famous for the large number of 

 species it has yielded to the long, patient, and careful investigations of Mr. Charles Moore, 

 late resident in that locality. The beds here consist^ of — 



1. Rubbly beds G — 10 feet, containing Ammonites communis, Sow,, A. falcifer, 

 Sow., A. Baquinianus, d'Orbig., A. bifrons, Brug., A. radians, Rein., A. insir/nis, 

 Schiibl. 



2. Clay, 8 inches. 



3. Yellow limestone, 3 — 4 inches. 



4. Layers of clay, 18 inches, Leptmna Peareei, Dav, 



5. Leptffina bed, 1 inch, Lejjtcena Moorei, Dav., L. Bouchardii, Dav., L. Hasina, 

 , Bouchard. 



6. Marlstone, 2^ inches, resting on greenish sand, contaimng Belemnites 4 inches 

 and Marlstone. 



Mr. Moore's museum contains Teleosaurus, LcJitJiyosaurus, and other reptiles, a 

 magnificent collection of fishes, representing many new species of Pachycormus, Lepidofus, 

 and other Upper Lias forms, in the finest possible preservation, the dark, enamelled scales 

 of the fish contrasting finely with the pale yellow rock in which they are entombed. 

 It was here likewise that Mr. Moore first discovered the Leptasna bed which contained 



^ Davidson's 'Monograph on British Oolitic and Liassic Bracliiopoda,' Palseontographical Society, 

 part 3, p. 17. 



