A GUIDE 



TO THE 



FOSSIL INVERTEBRATE ANIMALS. 



This book is a guide to the fossil remains of Invertebrate 

 Animals and to a few subsidiary collections contained in 

 Galleries ^^Tos. YII, VIII, IX, and XI of the Geological 

 Department. These Galleries may be approached by turning 

 to the left, either immediately on entering the large Gallery 

 of fossil Mammals, or on reaching the end of it. Both these 

 turns to the left lead into the long Gallery Xo. IV containing 

 fossil Eeptiles, out of which lead the four Galleries here 

 described (See Frontispiece-Plan, Plate I). 



Gallery A^II is the westernmost and is nearest the main 

 entrance, and Gallery XI is furthest away, towards the east. 

 The entrance to each Gallery is at its south end. The 

 Wall-cases and Table-cases in the Galleries are numbered 

 consecutively, Xo. 1 being, in the wider Galleries, on the left 

 hand of the visitor as he enters, and the highest number 

 being on his right. Following this order of the Cases, the 

 contents of these Galleries are briefly as follows : — 



Gallery VII : Cephalopods (Ammonites, Belemnites, &c.). 



Gallery VIII : All Molluscs (except Cephalopods), 

 Bryozoa, Brachiopods, Arthropods (insects, lobsters, trilobites, 

 &c.), ringed worms, Echinoderms (sea-urchins, star-fishes, &c.). 



[Gallery IX : Geological Library and Students' Collec- 

 tion, closed to the public] 



Gallery X : Coelentera (corals, graptolites, &c.). Sponges, 

 Protozoa, Plants (these last to be described in a separate 

 Guide-book). 



Gallery XI : Stratigraphical series of rocks and fossils ; 

 Forms and Structures produced by geological agents, and in 

 some cases simulating fossils ; Tracks and Footprints left by 

 various animals ; and Collections of Historical interest. 



B 



