382 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxvni. 



Vertebres, II, p. 236; Doderlein, Korallengat. Fungia, pp. 77-79, pi. iv, 

 tigs, 7-9, pi. V, figs 5, 5a. 



Distrihution. — Recent, China Seas and Philippines eastward to the 

 mid -Pacific. 



AcTiNOSERis d'Orbigny, Note sur des Polyp, foss., p. 12, 1849. 



Orlgi-iial (pnerle'dtagno.sis. — "It is a circular CycloHerh^ whose col- 

 umella is central, round, and not in an elongated furrow." 



Type specie!^. — A. cenomaneuxis d'Orl)igny, Note sur des Polyp, foss., 

 nom. nud.; Prod, de paleontol., II, p. 180; Milne Edwards and Haime, 

 Hist. nat. Corall., Ill, p. 53. 



Dlsfrthuflon. — "Groupe de la craie tuffeau, Le Mans." 



Milne Edwards'' refers Activoserl.s een(>m(inen><is to the genus Cyclo- 

 serls., making d'Orbigny's Actinoseris a synonym of their Cycloseris. 

 The septal structure of d'Orbigny's genus should be investigated. It 

 may be well to reinvestigate the Tertiary and Cretaceous species of 

 Cycloseris^ they m<(y not he eo» generic unth Fung la {Cycloseris) cyclo- 

 lltcs Lamarck. It is of especial importance to determine whether the 

 free disks of these corals placed in (7^(;'/(95t^/7'.s originate as anthocyat/il, 

 as in Fungld. 



DiASERis Milne Edwards and Haime, ("omptes rend. Acad., Paris, 

 XXIX, 1849, p. 72. 



This genus was placed by its authors in their ^' Lophoserinx^^'' char- 

 acterized by having "the plateau without epitheca and echinulations, 

 and with imperforate tissues." 



Original generic diagnosis. — ' ' Differs from the preceding [ Cycloseris] 

 in that, when young, it is composed of separate parts that unite later." 



Type species. — Fung la dlsUnia Michelin, Mag. de Zool., 2d scr. , V 

 Annee, Zooph., pi. v; Doderlein, Korallengat. Fungia, pp. 74-77, pis. 

 Ill, V, figs. 3, 3a. 



Dlstrlhutlon. — Philippines. 



Remarks. — Duncan in his "Revision of the Genera and Families of 

 the MadreporarhC^' places Ecmesuf< Philippi'' and Ilenucyathus Seg- 

 uenza'' in the synonymy of D laser Is. Ecinesus is a doubtful coral, but 

 probably is an imperfect specimen of a Trochocyathoid species. The 

 IlemlcyaiJinx of Soguenza certainly belongs in that group. 



Pleuractis Verrill, Bull. Mus. Comp. Zool.. I, 1864, p. 52. 



Type species. — Fungia scufarla Lamarck, Hi^^t. nat. Anim. sans 

 Vert., II, p. 236; Doderlein, Korallengat. Fungia, pp. 91-97, pi. viii, 

 figs. 1-6. 



A type species was designated, but no description was published. 

 The genus was intended to embrace more or less elongate, flat, Fun- 

 giee., without tentacular lobes on the septa. 



«Hist. nat. Corall., Ill, p. 53. 



''Jour. Linn. Soc. London, Zool., XVIII, 1884, p. 150. 



t'Neues Jahrb. fi'ir Mineral., Jahrg. 1841, p. 665, pi. xi b, figs. 1 a-e. 



<^Corallarii fossili del. rocce terz. del dist. Messina, 1864, Pt. 2, p. 67. 



