402 Mr. F. M'Coy on some new Mesozoic Radiata. 



Meandrina vermicularis (M^Coy). 

 Sp. Char. Corallum forming depressed rounded masses 3 or 4 

 inches in diameter; upper surface covered with vermicular 

 contorted ridges about half a line in diameter, from 1 to 2 

 lines apart, and about 1 line high, variously connected at in- 

 tervals, their sides very finely and regularly striated by the 

 minute lamellae (about eight or nine in the space of one line), 

 and a single row of little stars in the valleys between each pair 

 of ridges. 



The extreme slenderness of the ridges and their strong con- 

 tortion give this coral the appearance of a mass of little marine 

 worms, and separate it easily from all known species ; it far ex- 

 ceeding the M. venustula (Mich.) and M. Lotharinga (Mich.) in 

 those respects, and I know no other species to which it makes 

 any approach. 



Rare in the inferior oolite of Leckhampton. 

 {Col. University of Cambridge.) 



Montlivaultia (Lamx.). 



I have satisfied myself, from the examination of a large suite of 

 both foreign and British species, that the Montlivaultice of La- 

 mouroux are identical in generic character with those corals to 

 which Miinster, Goldfuss, Esper, Blainville, &c. have restricted 

 the name Anthophyllum of Schweigger, the different ages of the 

 A. decipiens (Gold.) for instance demonstrating the identity of 

 the groups in a single species. This renders the synonymy of 

 the genus Anthophyllum more clear and definite than it has been. 

 That genus was originally established by Schweigger in his 

 ' Beobachtungen, &c. Anat. phys. Untersuchungen iiber Co- 

 rallen' (tab. 6), and defined as agreeing with Turhinolia, except 

 in being fixed and having the margin of the cells dilated; he di- 

 vided it into five groups : the 1st, " cylindri turbinati subsolitarii" 

 since formed into the genus Cyathina (Ehr.) ; 2nd, " cylindri tur- 

 binati in ramos connexi,'* being, from the species referred to, equi- 

 valent to the later genus Cladocora (Ehr.) ; 3rd, " cylindri turbi- 

 nati, e basi stirpis diver gentes, versus basin concreti,^ might I think 

 be united to his 5th group, which is similarly defined except that 

 the tubes are ^^ lamellis calcareis horizontalibus juncti/* a differ- 

 ence which disappears on examining specimens of the species he 

 refers to as examples of the groups ; the 4th group, founded on 

 the C. calycularis, is referred by Ehrenberg to his Caryophyllia. 

 It is unfortunate that the characters of this group as origi- 

 nally given are not applicable to any natural genus. Ehrenberg 

 in his 'Beitrage zur Kenntniss der Corallenthiere des rothen 

 Meeres ' having formed the 1st group into one genus, the 2nd and 



