A. F. Verrill — Comparisons of Coral Faunae. 181 



Family Agaricidae. See p. 139. 

 Agaricia fragilis Dana. See p. 142. 



Plate xxvi, figures la-Id. 



Hat Coral. Shade Coral. 



Bermudas, on the reefs in shallow water ; Castle Harbor ; Har- 

 rington Sound, 0.5 to 3 fathoms, common ; Florida and the West 

 Indies, rather rare. 



Siderastraea radians (Pallas) Ver. See p. 153. 



Vaughan, Corals Porto Eican Waters, p. 309, pi. xv, pi. xvi, fig. 2, 1901. 



Plate xxx, figure 1. 



Star Coral. 



Bermudas, common, both on the reefs and in shallow water in all 

 bays and sounds ; grassy flats of Long Bird Island at low tide and 

 in pools, etc. Florida; everywhere in the West Indies and to Colon ; 

 abundant. 



Siderastraea siderea (Ellis & Sol.) Blainv. See p. 151. 



Vaughan, op. cit., p. 309, pi. xiv, figs. 1, 2, pi. xvi, fig. 1, 1901. 



Plate xxx, figures 2, 3. 



Star Coral. 



Bermudas, much less common than the last. Florida Reefs and 

 West Indies ; Colon, etc. ; common. 



Family Poritidae Gray, 1840. Dana, 1846. See p. 158. 



Porites polymorpha Link. See p. 158. 



Porites porites (pars = forma clavaria) Vaughan, op. cit., pp. 314-316, pi. 

 xxix, pi. xxxi, fig. 2. 



Plate xxxi, figures 3, 3a. 



Bermudas, common on the reefs and also in the shallow bays, 0.5 



to 3 fathoms ; Harrington Sound. Florida and through the West 



Indies ; abundant. 



Porites astreoides Les. See p. 160. 



Porites astreoides Vaughan, op. cit., p. 317, plates xxxii-xxxiv, 1901. 



Plate xxxi, figures 4, 4a. 



Common in shallow water and on the reefs, 0.5 to 4 fathoms. 

 Florida and through the West Indies to Pernambuco, Brazil, 

 abundant. 



