130 GUIDE TO THE FOSSIL INVERTEBEATE ANIMALS. 



Gallery Stirimlina \Clavagella\ coronata, in which a shelly tube is 

 VIII. formed round the long siphons while the shell- valves 

 remain quite small and attached to the side of the tube. 

 In addition to the gastropods here figured (Fig. 69), one 

 may note the beautiful Voluta luctatrix, the large Hijj- 

 IJochrenes [Rostellaria] ampla, and Xenophora agglutinans, 



Fig. 69. — Shells of Eocene marine Gastropods and Lamellibranchs. 



a, Cyprina Morrisi, Thanet Sands of Herne Bay, Kent ; the specimen 

 figured by J. de C. Sowerby; the hole is due to a boring animal. 



b, Pholadomyavirgulosa, London Clay of Bognor, Sussex ; a small speci- 

 men, c, inside, and d, outside of left valve of Crassatellites sulcatus, 

 Barton Beds of Hampshire, e, Cypraea Bowerbanki, Lutetian of 

 Bracklesham, Sussex. /, Glavalithes longeevits, Barton Beds of 

 Hampshire, g, the hinge, and h, the outside of right valve of Cardita 

 planicosta, a small specimen, Lutetian of Bracklesham. b, c, d, g, h, 

 are natural size ; a, e, § natural size ; /, J natural size. (Table- 

 cases 4 & 5.) 



one of the carrier- shells that become covered with bits of 

 stone, shell, and other foreign substances. Among London 



