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CONTENTS OF VOL. IV. 



PAGE 



CLASS SARCODINA. SUB-CLASS BHIZOPODA. 



ORDER I. AMCEBINA ...... 8 



FAMILY 1. LOBOSA . .... 8 



GENUS 1. AM(EBA . . . 8 



ORDER II. CONCHULINA ... 13 



FAMILY 1. ARCELLIDA ... 13 



GENUS 15. ARCELLA . . . . .13 



15a. PYXIDICULA . . . .17 



15b. MICROCORYCIA . . . .24 



15c. PARMULINA . .27 



16a. CAPSULINA . . 29 



16b. DIPLOCHLAMYS . . . .30 



17. CENTROPYXIS . . . .34 



18. DIFFLUGIA . 36 

 18a. BULLINULA . . . .44 

 18b. PLAGIOPYXIS . . . .46 



18c. CUCURBITELLA . . .47 



19. PONTIGULASIA . . . .49 



23. CRYPTODIFFI/UGIA . . 50 



24. HYALOSPHENIA . 55 



25. NEBELA . . . . .56 



26. QUADRULELLA . . . .62 



27. HELEOPERA . . . .63 

 27a. AVERINTZIA . 64 

 29. COCHLIOPODIUM . 66 



INDEX OF SPECIES, ETC., NAMED OR DESCRIBED . . .69 



ERRATA AND CORRIGENDA . . 72 



BIBLIOGRAPHY ... ... 73 



GENERAL INDEX TO THE BHIZOPODA 123 



3i\ *- ' 

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