INTRODUCTION. hit 
7. Genus STEPHANOPHYLLIA. 
Michelin, Dict. des Sc. Nat., Suppl., vol. i, p. 484, 1841. 
Corallum simple, free, and presenting no trace of adherence. Wall discoidal, 
horizontal. Ca/ice circular and open. Sepéa tall, thin, crowded, not projecting laterally 
beyond the edge of the mural disc, covered with conical granulations on each side, and 
all, excepting those of the first cyclum, united by the inner edge.  Cos¢@ delicate, straight, 
composed of simple series of obscure granulations, and radiating regularly from the 
centre of the mural disc to its circumference. No epitheca. 
Typ. sp., Stephanophyllia elegans, Michelin, Icon. Zooph., pl. viii, fig. 2. Milne Edw. and J. Haime, 
loc. cit., tab. i, fig. 10. 
8. Genus DENDROPHYLLIA. 
Blainville, Dict. des Sc. Nat., vol. lx, p. 319, 1830. 
Corallum composite, and in general arborescent. Corallites cylmdrical, or cylindrico- 
turbinate, and formed by lateral gemmation. Ca/ices circular, or nearly so ; fossula deep. 
Columella well developed, and in general projecting much at the bottom of the fossula. 
Septa not exsert, thin, and closely set ; those of the fourth cyclum well developed. Wa//s 
becoming very thick, and presenting narrow vermiculate cost@, formed by series of granule. 
Typ. sp., Dendrophyllia ramea, Blainville, loc. cit.; Milne Edw., Atlas du Regne Animal de Cuvier, 
Zooph., pl. lxxxiu, fig. 1. 
9. Genus LOBOPSAMMIA. 
Milne Edw. and J. Haime, Ann. des Sc. Nat., 3™° série, vol. x, p. 105, 1848. 
Corallum composite, arborescent, increasing by successive fissiparity.  Ca/ices irregular 
inform. Septa forming four complete and well-developed cycla. In other respects similar 
to Dendrophylha. 
Typ. sp., Lobopsammia cariosa, Milne Edw. and J. Haime, loc. cit.; Eithodendron ecariosum, Goldfuss, 
Petref. Germ., vol. i, tab. xiii, fig. 7. 
10. Genus C@NOPSAMMIA. 
‘Milne Edw. and J. Haime, loc. cit., p. 106, 1848; Tubastrea, Lesson, Voyage aux Indes orient. par 
Belanger, 1834. 
Corallum composite, dendroid, or sub-globose, increasing by lateral or sub-basal gemma- 
tion. Corallites cylindrical. Calices circular, or nearly so. Colwmella tubercular, well 
developed. Sepéa not exsert, distant, and forming three cycla; those of the fifth order 
rudimentary. Cosfe narrow, sub-vermiculate towards the bases, simple, and formed of a 
series of granule near the calice. 
Typ. sp., Cenopsammia coccinea, Milne Edw. and J. Haime, loc. cit., p. 107 ; Tubastrea coccinea, Lesson, 
op. cit., Zooph., tab. i; Astrea calicularis, Blainville, Manuel d’Actinol., tab. liv, fig. 2. 
ll. Genus StEREOPSAMMIA. 
Corallum presenting most of the characters of Canopsammia, but not having any 
Columella. 
Typ. sp., Stereopsammia humilis, nob., tab. v, fig. 4. 
