Family ORBXCBhUBAE Vaughan 
1901. - Orb i collide® Faugh&n. Stony corals of the Porto Rican «st ®rs» 
0, 8. Fish Commission Bull, for 1900, vol. 2, p. 300. 
1902. - Orb ic»ll Idas Terrill, Trans. Com. Acati. Sci* , ▼si, XI, p. 93, 
Type genus, OrblcelXa Dana. 
Vaughan* a original character ig&t ion of ths family s "Calcareous 
tissues normally imperforate, except in the c ©lamellar regicag Oorallite® 
grouped into rounded, gibbous, or digit iform masses. Septal margin® den- 
tate. Reproduction normally fey gemmation between the corallines, occa- 
sionally abnormal reproduction fey fission." 
x No differential characters given by which the family can fee 
separated from the Astrpoosalida®. Compare diagnoses of the two fam- 
ilies. 
hist of Orbicallan oorals in manuscript. 
0. annularis (Ell. & Sol) 
M. f*v»olat* E, & S. 
H, acropora D. & M, 
H. lamarcki D« A M. 
Phyllocoesia sculpta rar, tegula Duncan 
Cyphastraoa costata Duncan 
Aetr&aa barbadansis Duncan 
Bohinopora f ranks i Gregory 
0. hiapidula Verrill 
0. 1 imbata (Duncan) 
Phyllocosnia limfeata Duncan 
Plsalstraea ramaa Duncan 
