Dr. F. Briiggemann on Stony Corals. 307 



Savigny's figure was either mistaken or overlooked by 

 subsequent authors. Audouin (Explic. somm. d. Planch. 

 Savign. p. 233) declares it to represent a Caryophyllia^ per- 

 haps the young of G. carduus. Ehrenberg (Corall. Roth. 

 Meer. p. 92) refers to it under his Caryophyllia lacera, re- 

 marking that he himself had not found this coral in the Red 

 Sea. M.-Edwards and Haime have not mentioned it any- 

 where*. 



III. Antillia. 



AntilUa, Diincau, Quart, Journ. Geol. Soc. xx. p. 28. 



Coral short, turbinate, in the earliest stages fixed to the 

 ground by a short ]5edicel, afterwards free, pointed at its base. 

 Epitlieca well developed, moderately appressed, generally with 

 transverse ringlets of growth. Costaj prominent, equal, den- 

 ticulate. Calicle more or less oblong, with a longer and a 

 shorter axis. Septa much projecting, rounded at their sum- 

 mits, with their free inner edges uniformly and minutely 

 serrato-dentate ; the inner thirds of the larger septa sometimes 

 separated by an emargination as paliform lobes. Columella 

 large, oblong, spongious. Animal Avith a single row of nume- 

 rous, small, verruciform tentacles, an even, more or less gra- 

 nulate disk, and a single, oval or linear mouth. 



This genus was originally established on some fossil West- 

 Indian corals differing from Montlivaltia in the possession of 

 a well-developed columella. It has become necessary to draw 

 up a more precise definition of the genus in order to differen- 

 tiate it sufficiently from its recent allies. It proves to be 

 widely distributed in the coral seas ; there are at least four 

 living species belonging to it. 



1. Antillia Lonsdalei. 



Antillia Lonsdaleia, Dimcan, Proc. Zool. Soc. 1876, p. 438, pi. xli. 

 figs. 1, 2. 



Hah. Japanese seas, in moderate depth. 



Prof. Duncan has referred this coral as a variety to a fossil 



* The followino- is a revised index to the Madreporaria figured by 

 Savigny in ' Description de I'Egypte,' Polypes : — 



PL 3. fig. 4. Alveopora dcedalea (Forsk.). 



PL 4. fig. 1. Antillia Geqfroyi (Audouiu) ; fig. 2. Cy7ianna Savignyi; 

 fig. 3. Stylopliora difjitata (PalL) ; fig. 4. Montipora crista yalli (Ehrenb.); 

 fig. 5. Cyphastrcea Savignyi, M.-Edw. & H. ; fig. G. Alveopora fenestrata 

 (Liam.). 



PL o. fig. 1. Siderastrma Savignyana, M.-Edw. t&H.; fig. 2. Gonio- 

 pora Savignyi, Dana ; fig. 3. Astrcea Savignyi (M.-Edw. & H.) ; fig. 4. 

 Coeloria arahica (= C. labyrintkiformis, M.-Edw. & H.). 



