100 



108 Echinus Spatagus 



109 Lacunosus 

 110 111 Purpureus 

 112113 Rosaceus 



1 1 3 b Rosaceus 



114116 Orbiculus 



2. Irregnlar. Mouth and Vent beneath. 



Death's-Head Urchin Europe 



Egg ditto Ib. 



Purple ditto N. Sea 



Rose-flower ditto Asia 



Ditto Dalkey Sound 



Cake ditto fndi* 



ORDER IV. Testacea. 



Mollusca, covered with a Calcareous Shell. 

 Chiton. 



1 IT 122 Chiton Scfuamosus 

 123 Ruber 



123 b Minimus 



124- 127 Lepas Balanoides 

 128 133 Tintinnabulum 



134- 



135 



136139 

 140 



142144 



Borealis 



Coarctata 



Balanus 



Spinosa 



Testudinaria 



Anatifera 



145146 Photos Dactylus 



147 Crispatus 



148 Candidus 



149 Hians 

 150 



151 My a Pictorum 



152 Margaritifer.1 

 152 b Marg. 



153 Oblonga 

 154> Corru^ruta 



Scaly Chiton N. America 



Ruddy ditto Norway 



Small ditto Ireland 



Lepas. 



Common Acorn-Shell Europe 



Bell, or Tulip ditto India 



Northern ditto Nonvay 



Compressed ditto Ib. 



Ilidged ditto Europe 



Thorny ditto India 



Tortoise dittq S. Sea 



Barnacle ditto Atlantic 



Pholas. 



Rough Piddock Europe 



Curled clitto W. Indies 



White ditto America 

 Gaping ditto 

 Mother of pearl shell pier- 

 ced by the Ph. Pusillus 



pr Slender Piddock West Indies 



Mi/a. 



Painter's Muscle 

 River Pearl ditto 

 Ditto ditto 

 Oblong Gaper 

 Wrinkled ditto 

 5 



Europe 

 Ireland 

 Lake Ontario 



Coromandel 



