76 PALiEOZOTC CORALS AND FORAMINIFERA. 



Cyathopkyllum pseudo-vermiculare (IVFCoy). 



Sp. Char. Elongate, cylindrical, flexuous ; surface very irregular, 

 annulated or transversely nodular, coarsely striated longitudi- 

 nally (about six striae in one-fourth of an inch) ; branches ave- 

 raging from half to three-fourths of an inch in diameter ; small 

 cylindrical branches project at distant irregular intervals from 

 the sides : internal structure, central area rather more than 

 half the diameter of the tube, defined, composed of flat, slightly 

 undulated transverse septa, bearing at their circumference a 

 series of from twenty-four to twenty- seven very short, rather 

 distant radiating lamellae, not reaching half-way to the centre ; 

 interval between this inner area and the walls filled with loose 

 cellular structure, formed of small vesicular curved plates, 

 highly inclined upwards and outwards. 



This interesting coral perfectly resembles the Cyathopkyllum 

 vermiculare of Goldfuss in external characters, but by cutting and 

 grinding down some specimens of the true Eifel coral of that 

 species, I have ascertained beyond doubt (what was before 

 suspected by Mr. Lonsdale) that it is not a true Cyathophyllum, 

 but belongs to that group which I have named Strephodes, having 

 the radiating lamellae extending from the walls to the centre, and 

 there twisted together without transverse diaphragms ; it also has 

 the curious character of the radiating lamellae having an elliptical 

 section, being thicker in the middle than at either end, a pecu- 

 liarity which I have also noticed in a British (Devonian) speci- 

 men of the same species, though not alluded to by Mr. Lonsdale 

 in his note on this species in the memoir of Prof. Sedgwick and 

 Sir R. Murchison on the Devonian System. The present moun- 

 tain limestone coral I have shown above to possess the true Cya- 

 thophyllum structure, and it is not therefore likely, after what I 

 have stated with regard to the Devonian species, to be in future 

 confounded with it. Externally it also bears a strong resemblance 

 to the mountain limestone fossil which I have called Lonsdaleia 

 duplicata (Mart, sp.), but that coral I have ascertained to possess 

 the very different internal structure oi Lithostrotion of Lonsdale 

 (Strombodes of Schweigger), and it is consequently with a little 

 care incapable of being confounded with the present fossil. 



Not uncommon in the lower carboniferous limestone of Ken- 

 dal ; a variety also occurs in the lower carboniferous limestone of 

 Kiltullagh, Roscommon, Ireland. 



{Col. University of Cambridge.) 



Diphyphyllum lateseptatum (M^Coy). 



Sp. Char. Stems upwards of 8 inches long, cylindrical, about 

 3 lines in diameter ; nearly smooth, very faintly striated Ion- 



