132 



PEor. p. MARTIN Duncan's revision of the 



Distribution. — Fossil. Upper Cretaceous: Maes tricht, Europe, 

 There are several very perfect specimens of the only species of 

 this remarkable genus in the British Museum. Their appearance 

 and structural characters are, to a certain extent, those of the 

 serial Astrseidse. 



CHAPTER V. 



The Section Fungida of the Madreporaria, definition, famihes. The family 

 Plesiofungidse, its groups and alliances and genera. The family Fungidse, 

 alliances and genera. The family Lophoseridse, alliances and genera. The 

 family Anabaciadse, and genera. The family Plesioporitidse, alliances and 

 genera. 



II. Section MADREPORAEIA FUNGIDA^. 



Madreporaria solitary or in colonies. Septa and septo-costse 

 with synapticula which cross the interseptal and intercostal 

 loculi. An endotheca may or may not exist. Septal laminae solid 

 or presenting degrees of fenestration. Basal structures perforate 

 or impterforate. Soft structures with short, lobe-like, scattered, 

 sometimes obsolete, tentacles, not covered when contracted ; 

 disks not circumscribed, and in colonial forms confluent. 



The reasons for adding two families to this section have been 

 given in a former j)age (4). 



Families. 



(Transition-group.) 1. Pi-esiofungid^. 



II. FuNGIDiE. 



III. LOPHOSERID^. 



IV. Anabaciad^. 

 (Transition-group.) V. Plesioporitid^. 



The family Plesiofungidse contains 13 genera, of which 10 are 

 taken from the family Astrseidse of Edwards and Haime. The 

 Eungidse contain 10 genera. Two new genera enter, and the old 

 form, Zoopilus, finds a place. Haliglossa becomes a subgenus ; 

 and Fodabacia is synonymous with Halomitra. 



* Verrill makes a suborder Fungacea, and foreshadowed the present ampli- 

 fication of the Fimgida in 1865 (see Verrill, ' Notes on Eadiata,' a work full of 

 valuable infoMaation) 



