INTRODUCTION. | xlix 
14. Genus CycLosERIs. 
Milne Edw. and J. Haime, Comptes rend., t. xxix, p. 72, 1849. 
Corallum simple, free, and discoidal. Septa very numerous, and united by their inner 
edge. Wall completely horizontal. 
Typ. sp., Cycloseris cyclolites, nob. ; Fungia eyclolites, Lamarck., Hist. des Anim. sans Vert., t. ii, p. 236. 
15. Genus DiasEris. 
Milne Edw. and J. Haime, loc. cit., p. 72, 1849. 
Corallum simple, free, and discoidal ; when young, composed of a certain number of 
separate, radiating lobes, which, in the adult state, become cemented together. General 
structure as in Cycloseris. 
Typ. sp., Diaseris distorta, nob.; Fungia distorta, Michelin, in Guerin’s Mag. Zool., t. v, Zoopb., 
pl. v, 1843. 
16. Genus 'TRocHOSERIS. 
Milne Edw. and J. Haime, loc. cit., p. 72, 1849. 
Corallum simple, trochoidal, adherent. Sep/a very numerous, and strongly granulated. 
Typ. sp., Trochoseris distorta, nob.; Anthophyllum distortum, Michelin, Ieon. Zooph., pl. xliii, fig. 8. 
17. Genus CYATHOSERIS. 
Milne Edw. and J. Haime, loc. cit., p. 72, 1849. 
Corallum composite, trochoid, adherent. Ca/ices rather distinctly radiate. Septa long 
and thick. Common basal walls, sometimes forming folds, which rise up so as to con- 
stitute lobes or ridges on the upper surface of the corallum. 
Typ. sp., Cyathoseris infundibuliformis, nob.; Agaricia infundibuliformis, Michelin, op. cit., tab. 
xiii, fig. 12. 
18. Genus LopHosERis. 
Milne Edw. and J. Haime, loc. cit., p. 72, 1849 ; Pavonia (ex parte), Lamarck, op. cit., t. ii, p. 238, 1816. 
Corallum composite, foliaceous, and adherent, rising in the form of irregular cristz or 
of lobes, with confluent, radiate calicules on each side. Colwmel/a tubercular. 
Typ. sp., Lophoseris boletiformis, nob. ; Pavonia boletiformis, Lamarck, loc. cit., p. 240. 
19. Genus AGARICIA. 
(Pars) Lamarck, Syst. des Anim. sans Vert., p. 375, 1801. 
Corallum composite, foliaceous, and irregular. Calices arranged in concentric series, 
separated by unequal ridges.  Columella tubercular. 
Typ. sp., Agaricia undata, Lamarck, loc. cit.; Madrepora undata, Solander and Ellis, Zooph., tab. xl. 
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