Vol. 51.] AND PHYSICAL GEOLOGY OF THE WEST INDIES. 273 



factory means of establishing the distinctness of the two species, 

 until an additional section showed that in some corallites one half 

 is on the acrojoora-type and the other on that of annularis. 



Fig. 2. — Section of Orbicella acropora (Linn.). X 10 diam. 



3 1 



Genus Solenaste^a, M.-Edwards & Haime. 

 Species Solenastr^ia stellulata (Ellis & Solander), 1786. 



Synonymy : — 



Madrepora stellulata, Ellis & Solander, 1786, 'Nat. Hist. Zooph.' p. 165, pi. liii. 

 figs. 3-4 ; Gmelin, 1790, ' Syst. Nat.' ed. xiii. p. 3767. 



Astrcea stellulata, Lamouroux, 1821, 'Expos. Meth.' p. 58, pi. liii. figs. 3-4; id. 

 1824, Encycl. Meth., ' Zooph.' p. 131, pi. 484. figs. 3-4 ; Blainville, 1830, Diet. Sci. Nat. 

 t. lx. p. 334 ; M.-Edwards & Haime, 1849, ' Monogr. Astr.' Ann. Sci. Nat. Zool. ser. 3, 

 t. xii. p. 105. 



Orbicella stellulata, Dana, 1848, 'Zooph. Explor. Exped. Wilkes,' vol. viii. p. 215, 

 pi. x. fig. 7. 



Beliastreea stellulata, M.-Edwards & Haime, 1857, ' Hist. Nat. Cor.' t. ii. p. 473 ; 

 Duchassaing & Michelotti, 1861, ' Mem. Cor. Ant.' Mem. R. Accad. Sci. Torino, ser. 2, 

 t. xix. p. 352 ; iid. 1866, ' Suppl. etc' ibid. ser. 2, t. xxiii. p. 179 ; Duchassaing, 1870, 

 ' Rev. Zooph. Ant.' p. 30. 



Solenastrcea Verheltsi (non M.-Ed. & H.), Duncan, 1864, 'Foss. Cor. W. Ind.' 

 pt. ii., Quart. Journ. Geol. Soc. vol. xx. p. 40. 



Solenastrtea Verheltsi, Duchassaing, 1870, ' Rev. Zooph. Ant.' p. 30. 



? Solenastrcea Bournoni, M.-Edwards & Haime, 1857, ' Hist. Nat. Cor.' t. ii. p. 497. 



Distribution. Eecent : West Indies. Fossil : Barbados : High-level Reefs, 

 Castle Grant, 1070 feet (Jukes-Browne Coll.). San Domingo, Tufaceous Limestone ; 

 Jamaica (Coll. Geol. Soc). 



Notes on the Species. — Duncan referred to the Eocene species, 

 S. Verheltsi, a worn fragment from San Domingo preserved in the 

 Museum of the Geological Society. I have been allowed to have a 

 microscopic preparation cut from this, which shows a well-marked 

 columella. It cannot therefore be included in the French species. 



x2 



