302 R. F. Tomes— Corals of Crickley BUI. 



Histoire Naturelle des Coralliaires (tome ii. p. 543). In the latter 

 work they observe : " Ce groupe est tres-voisin des Isastrees : il 

 s'en. distingue par I'absence d'epitheque et la tendance de seS poly- 

 perites a former des series plus ou moins longues." 



Prof. Duncan, in his Supplement to the History of British Fossil 

 Corals (part iii. p. 18), observes of this species : "Many portions of 

 the corallum do not present serial calices, and if such fragments 

 were found separate, they would necessarily be associated with the 

 genus IsastrcBa." 



Neither of these palaBontologists, nor yet M. de Fromentel, appear 

 to have observed a peculiarity which is seen in some specimens of 

 Latimceandra Flemingi from Crickley, and that is, the total absence 

 of a common or enclosing wall, and the consequently exposed and 

 open condition of the inferior extremities of the corallites. This 

 is not a common character amongst the Oolitic Isastrceoe, though it 

 prevails amongst the Liassic species. 



CLAUSASTRiEA CONSOBRINA ? Ed. and Haime. 

 Pal. Foss. des terr. Paleon. p. 107 (1851). Hist. IS at. Cor. torn. ii. 



p. 552 (1857). 

 E. de From., Intro. Etud. Pol. Fos. p. 281 (1858-61). 

 SynastroBa consobrina, d'Orb., Prod, de Pal. Franc, t. i. p. 293 (1850). 



I have seen one specimen only of a coral which I refer with some 

 doubt to the above species. It was taken from the Coral-bed by 

 myself in 1862. It agrees so closely with the description given 

 by MM. Edwards and Haime of Clausastrcea consobrina, as well as 

 with that of M. de Fromentel, that I have referred it to that species, 

 though with some doubt. 



The corallum has the thin and expanded form so common amongst 

 the Crickley corals. The calices, though superficial, are symmetrically 

 round, and the septa somewhat exsert, with a small but well- 

 defined circular fossula. The septo-costal rays are continuous in 

 adjacent calices, though not as in the genus Thamnastrcea, but 

 often meeting and uniting at an angle on the mural region. The 

 walls are either wholly wanting or merely rudimentary, and the 

 dissepiments are well developed and domeshaped. 



M. de Fromentel places the genus Clausastrcea amongst the 

 ZoantJiaria Tabulata on account of the dissepiments taking the 

 position of tabulee. In my specimen, though they are on nearly 

 the same planes, they preserve the character of true dissepiments, 

 and can scarcely be said to form tabulee. 



Family Fungid^. 



Genus Thegoseris, E. de From. 

 M. de Fromentel thus characterizes this genus. Corallum elevated 

 and regularly turbinate. Calicular fossa, when it exists, round. 

 Most commonly the septa are united in the centre of the calice, and 

 form a false columella. They are fine, numei'ous, often anasto- 

 mozing, and finally denticulated. They are never exsert, and the 

 calice is generally concave. The epitheca is strong, well developed, 

 in folds, and reaching to the margin of the calice. ' 



