722 ZOOPHYTES. 



Genus Phyllodes. p. 374. 



Philippi's figure of the Phyllodes, though representing a perfect individual according 

 to his description, is a half of some cuneiform species, perhaps allied to the Turbirmliir, 

 as stated in the text, but possibly nearer the Euphylliaj. The description and figure leave 

 it doubtful. 



Lonsdale has given the name Endopachys to certain free Turbinaliro, characterized by 

 having thick porous sides and base to the corallum, and no trace of a pedicel in the 

 adult state ; to it belong the cuneiform species which the Phyllodes, properly character- 

 ized, may include. In the lamellae and texture, they are near the Dendrophyllias. Lons- 

 dale refers to it both turbinate and cuneiform species, and rests his genus principally upon 

 the idea, that the thickening of the corallum lakes place from within through foramina a 

 very doubtful fact. On an examination of specimens of Lonsdalc's species, I find no 

 evidence of so anomalous a mode of secretion. The name alludes to this supposed fact, 

 and is from evSov, within, and fa^ys, thick. LONSDALE, Proceed. Geol. Soc., London, 

 iv., 1845, part iii. 



Genus Asf.roitis. p. 405. 



Many of the fossil corals referred to the genus Astraia, appear to be more properly 

 allied to the group Astroitis. They have the narrow interstices of the Astrsese, which 

 bud in the disks (the Fissicelloc), but bud interstitialli/, like the Astroites : and we may 

 infer from analogy that they have the polyps prominent when expanded, as in this genus, 

 a character which would place them with the Caryophyllacea (see p. 203). Some species 

 appear to have the imperfectly united cells of the Mediterranean Astroitis, and to this divi- 

 sion of the group probably belongs the Columnaria sex-radiata of Lonsdale. (Proceed. 

 Geol. Soc., London, iv., 1845, part, iii.) In others, the cells are solidly coalescent ; and 

 these may be distinguished by the generic name Pleiadia. 



Madrepora : Appendix. p. 489. 



Heteropora imbricata. (Ehrenberg, op. cit., G. Ixix., sp. 15): " Quadri-pollicaris, 

 latior, cespitosa, ramis gracilibus, dense stellulatis, stellulis [caliculis] inferioribus parum 

 prominulis, superioribus semitubulosis, dense imbricatis, in laminas planas striatas apice 

 dilatatas passim glabras abeuntibus, stellis terminalibus parvis ostiis apice apertis." No 

 locality is given. 



The genus Madrepora of Ehrenberg, which includes species not budding from a parent- 

 polyp, is divided into the two subgenera Phyllopora and Porites. Phyllopora includes two 

 species, splierostoma and leptostoma, the first of which appears to be an Echinopora, and 

 perhaps also the other. If not Echinopora; (as having twelve tentacles, in connexion 

 with an inferior mode of budding, would prove), they may be representatives of that genus 

 among the Madreporacea, in the same manner as the Heliolites represent the smaller Or- 

 bicellce. They are described as follows : 



