CONTENTS. 



CHAPTER I. 



PAGE 



The general history of the genus Monticulipora, D'Orb. — The notices and 

 descriptions of MonticuHpora, previous to the estabhshment of this 

 genus by D'Orbigny — Lonsdale — Insufficiency of D'Orbigny's defini- 

 tion — The genus Nebulipora, M'Coy — King — Milne-Edwards and 

 Haime — The genus Stenopora, M'Coy — Hall — Billings — Eichwald 

 (Chaetetes, Dianulites, Orbipora, Monticulipora) — Rominger — Dawson 

 — De Koninck — Salter — Nicholson — Dybowski (new classification of 

 the Monticuliporoids) — James — Ulrich, . . . . i 



CHAPTER n. 



The general and comparative structure of Monticulipora — Definition of 

 Monticulipora, D'Orb., in the wide sense of this term — The form of the 

 corallum and its variations in the Monticuliporoids — Structure of the 

 walls of the corallites, as shown by microscopic sections and by rough 

 fractures — Absence of mural pores — Surface-characters of the cor- 

 allum — Monticules and maculae — Spiniform corallites — Dimorphism 

 of the corallum, and structural differences between the large and 

 small corallites — Insufficiency of this last character, when standing 

 alone, as a basis of classification — Structure and arrangement of the 

 tabulae — Absence of septa and pseudo-septa — Epithecal and opercular 

 structures, . . . . . . . • 3° 



CHAPTER III. 



The development of the Monticuliporoids — Views of Dr Lindstrom — 

 Difficulties in the way of accepting these views — The supposed relation- 

 ship between Monticulipora and Heteropora — The general characters 

 and minute structure of the recent Heteropora neozelanica, Busk — 

 Conclusions as to the want of a real relationship between Heteropora 

 and Monticulipora- — Small importance of external resemblances in 

 determining zoological affinities, . . . . • 5^ 



