PLATES IN VOL. XVIII. 



Plate I. New species of Insects. 



II. New Crustacea and Arachnida. 



III. Cheirotonus MacLeaii. 



IV. New British species of Naked Mollusca. 

 V. New species of Shells. 



VII i C rai " a °f Crocodiles. 

 VIII. Development of Vegetable Cells. 

 IX. New British Coleoptera. — Organization of the Polygastric Infu- 

 soria. 

 X. Organization of the Polygastric Infusoria. 



ERRATA AND ADDENDA. 



Page 49, line 14 from bottom, 1 



— 50, — 2, Y for Ooctonus read Sphecomicrus. 



— 50, — 32, J 



— 49, — 11, from bottom, for subsessile read subpetiolatum. 



— 49, — last, dele Eustochus, and insert 



Abdomen petiolatum . . . Eustochus. 

 Abdomen subsessile ... Patasson. 



— 50, — 5-6, for tenuissima dimidiante raw? trientali. 



— 50, — 8, for subsessile read subpetiolatum. 



— 50, — 20-21, insert Patasson. 



Tarsi 4-meri. Antenna? ? 10-art. capitulo 2-art. — 3 

 13-art. flagello compresso. Alae anticae vena clavata. 



— 52, — 18, transfer 1. crassicornis , to g. Patasson. 



— 52, — 23-24 insert Patasson. 



