CORALS AND BRYOZOA. 15 



Flabellum MARiiE^ 11. s. Corallum narrowly pedicellate, 

 rising for a sliort distance from the pedicel_, and then the 

 ends of the major axis suddenly spread ont horizontally, "while 

 the sides form a semicircle. The calice is rather wide, as Trell 

 as deep. Septa in six systems of six cycles ; but this is not 

 certain, as all the calices are full of the matrix, and so brittle 

 and thin that no attempt could be made to free them. The 

 sides of the septa are sparingly granular in radiating lines. 

 Epitheca thick, not wrinkled, but incremental lines well marked. 

 Costa broad, flat, separated by faint grooves. Interstices marked 

 with fine " herring-bone " ornamentation, which is seen on some 

 of the Australian Tertiary corals. Alt* 32, lat. 40 millim. 

 Fig. 14, coral, natural size. App. Off. Cat., p. 37, No. 31. 

 Shakespeare Cliff (lower part), Wanganui ; III. 



Flabellum attenuatum, n. s. Corallum tall, thin, spreading 

 at an angle of about 40° from a short cylindrical pedicel, covered 

 with a thin shining epitheca, through which the costa and con- 

 centric lines of growth are plainly A-isible ; ends of major axis 

 depressed. Calice not visible. Costa moderately rounded, rather 

 broad and bifurcating. Alt. 25, lat. 19 millim. Only one side 

 of this fossil is visible, the rest being imbedded in a soft matrix, 

 which could not be safely cleared away without destroying the 

 coral. There is, however, quite sufficient to show its dis- 

 tinctness from any of the species hitherto described. Its peculiar 

 characters are the attenuate form and the shining epitheca. 

 App. Off. Cat., p. 38, No. 40. Oamarn, IV. This specimen 

 was fastened to a card with another quite different coral (Noto- 

 cyathusj, and therefore the No. 40 appears twice. Fig. 15, coral 

 in matrix, natural size. 



Family — Oculinid.^. New genus — Platyhelia. 



Spreading and encrusting oculinee with pali. I erect this 

 genus for corals with the usual compact dermic tissue of Ocu- 

 Unaceoi and with pali-like oculina ; but spreading and encrusting 

 instead of growing in a ramose tuft. No such coral has hitherto 

 been found in any seas or formation, and none of the existing 

 genera provide for its reception. Professor Duncan has de- 

 scribed an encrusting Amphihelia from the Mount Gambler 

 limestones ; but altogether of a different type from this. 



In the classification of the Ociilinace<e proposed by Professor 

 Verrill, Oculinidse is a family made to include encrusting or 



