Ixi BRITISH FOSSIL CORALS. 
8. Genus Hanysrrss. 
Fischer, Zoognosia, 3d edit., vol. i, p. 387, 1813; Catenipora, Lamarck, Hist. des An. sans Vert., t. ii, 
p. 206, 1816. 
Corallites extremely long, arranged in a single series, and united laterally, so as to 
constitute large flabelliform expansions, which remain free laterally, but often meet, and 
thus form a lacunous mass. ypitheca very thick. Septa almost rudimentary, but very 
distinct in perfect specimens. Zudule horizontal. 
Typ. sp., Halysites escharoides, Fischer ; Catenipora escharoides, Lamarck, loc. cit., p. 207. 
9. Genus HarMopItEs. 
Fischer, Notice sur les Tubipores fossiles, 1828 ; Syringopora, Goldfuss, Petref. Germ., vol. i, p. 75, 1826-33. 
Corallum fasciculate. Corallites irregularly cylindrical, very long, and united by hori- 
zontal connecting tubes. Zasu/e infundibuliform. 
Typ. sp., Harmodites ramulosa, nob. ; Syringopora ramulosa, Goldfuss, loc. cit., pl. xxv, fig. 7. 
10. Genus THECOSTEGITES. 
Milne Edw. and J. Haime, Comptes rend., t. xxix, p. 261, 1849. 
Corallites cylindrical, short, and united by strong mural expansions situated at various 
heights. Zabu/e horizontal. 
Typ. sp., Thecostegites Bouchardi, nob.; Harmodites Bouchardi, Michelin, Icon. Zooph., pl. xlviii, fig. 3. 
Fourth Tribe—POCILLOPORIN At. 
Corallum massive, gibbous, or subdendroid, with thick imperforated walls, forming, 
towards the surface, an abundant compact caenenchyma. Sepéa quite rudimentary. 
11. Genus Pocttuopora. 
(Pars) Lamarck, Hist. des An. sans Vert., t. ii, p. 273, 1816; Dana, Zooph., p. 523, 1846. 
Calices shallow, and presenting, at their bottom, a transverse, thick, projecting ring, 
resembling a columella. 
Typ. sp., Pocillopora acuta, Lamarck, loc. cit., p. 274 ; Milne Edw., Atlas du Régne Animal de Cuvier, 
Zooph., pl. lxxxi, fig. 3. 
