80 SIDERASTILEA. 



well (levolopcfl, concave. Diameter of calicles 5 to 6 mm. Height of 

 corallites 8 mm. or less. 



Quite common on old corals on the Florida Reef 



A-s/raiit/ia palifera Verrill, from the East Indies, is very closely allied 

 to this species. They form a little group of passage from the Astran- 

 giai to the Phyllangia>, and have also affinities with the Cjliciai and 

 Rhizangia^. 



A. iisb'wifoniilx M.-Ed\v. & H. does not properly belong to the reef 

 fauna, but is found to the east and west of the Florida Reef Adnutgia 

 Daniv Ag. is found between Cape Cod and Cape Hatteras. The difi'er- 

 ences between these two species are of the slightest charactei', being 

 chiefly derived from the mode of grou[)ing, which is denser in the first 

 than in the second. I am strongly inclined to believe that they will 

 nltiniatelv be united. 



COLANGIA PoiRT. 

 Colangia immeisa Pouut. 

 (See Deep-Sea Corals, page 31.) 



Family FUNGID^ Dana. 



Subfamily LOPHOSERIN^ M.-Edw. & H. 



The sulilinnlly of Fuiiginiv lias no represeutatlvt's in the shoal-water 

 fauna ol' the Atlantic bashi. but is represented, tliough (piite scantily, 

 iu the ileep-sca region, as we have seen. The limits of the subfamily 

 of Loplioserin.e require revision ; at least it does not appear natural to 

 ])iac(' iu (lifli'rent families genera so closely allied as Fungia and Dia- 

 seris or Cycloseris. 



SIDERASTR J' A M.-Eow. & H. 



Axlrca (pai'^) Lamk., Okk.n. 



Siileriistrcii (pars) IJi.aixv. 



Siihrina Dana. 



Sidem.itirii M.-EdW. & H. Compt. rend, de I'Ara.l. itcs Sc , t. XXVII., tSlS ; and Ann. Sc. Nat. 



S' Sor., t. XU., l.H,")0. 

 Astnm M.-i;i)\v. & II. Hist. Nat. <l.-s Corall., ISfw. 



For the reasons why tlic name Siderastra'^a sliould be retained in 

 preference to Astni3a, see Verrill, Hull. Mus. Coiup. Zoul., No. 3. 



