FAMILIES AND GENERA OE THE MADEEPOEAEIA. 



65 



dentated. Epitheca complete. Endotlieca exists. Gremraatioii 

 from the base or from a short or long calcareous stolon of the 

 parent corallite. 



Distribution. — Hecent. Cape of Good Hope, Natal, Australian 

 seas, New-Zealand seas, Singapore. 



It is probable that Solenastrcea Prestwichi, Duncan, of the Crag, 

 is a crowded Cylicia with an abnormal growth of exotheca. 



Grenus Scolangia, Tennison Woods, Palceont. New Zealand, 

 Corah and Bryozoa, p. 18 (1880). 



Astrangiacese united by a calcareous stolon which covers the 

 wall with concentric layers. Corallites inclined. No spiniform 

 processes on the septa. No columella. 



Distribution . — Fossil. Tertiary : New Zealand. 



In the solitary specimen of the solitary species there does not 

 appear to be a complete calice in the delineation given. The fossa 

 was wide. It may be supposed that the stolon mentioned above 

 means epitheca. 



Grenus Ceyptangia, Milne-Edwards Sf Jules Haime, Hist. Nat. 

 des Corall. yol. ii. p. 609 (1857). 



Colony budding by stolons which do not become calcareous. 

 Corallites quite free amongst themselves, elongate, cylindro-tur- 

 binate, and with a complete epitheca. Calicos circular or sub- 

 circular; fossette well marked, deep. Columella papillary and 

 well developed. Septa thin, dentate, moderately close. Endo- 

 theca exists. Habit : surrounded by and immersed in Celleporce. 



Distribution. — Fossil. Miocene : Europe. Pliocene : England. 



The species of this genus are always found immersed in Celle- 

 porcB ; and this and their corallite shape and dentate septa of all 

 ages separate it from Cylicia. 



Grenus E-hizangia, Milne-Fdwards Sf Jules Saime, Compt. Fend, 

 de VAcad. des Sci. Nat. t. xxvii. p. 496 (1818). 

 Colony forming expansions of calcareous basal structures from 

 which corallites arise. Corallites rather close, short, sometimes 

 very much so, sub cylindrical, largely fixed by the base. Calioes 

 circular, almost superficial. Columella papillary, the outer part 

 resembling the inner teeth of the septa. Septa numerous, rarely 

 exsert, large, thin, subequal, granular, close, minutely denticulate 

 where free. Epitheca complete. Endotheca exists. 



LINN. JOUEN. — ZOOLOGY, YOL. XVIII. 5 



