i8o TABULATE CORALS. 



united by their walls, and its possession of rudimentary spini- 

 form septa, of tabulse, and oi 7nur at pores. In the second place, 

 we have here a coral which really fulfils Goldfuss's ideal of 

 Calamopora — " diaphragmatibus transversis, e siphone proli- 

 fero ; " if it were at all possible to revive this name with justice 

 or advantage. It is, however, quite certain that not one of the 

 forms included by Goldfuss under the name of Calamopora — 

 not even his Calamopora [Rcemeria) infundibulifera — really 

 possesses a central siphonal tube, formed by the junction of a 

 vertical series of funnel-shaped depressions of the tabulae in 

 the middle line. Mr Hinde's specimens, however, place it 

 beyond a doubt that, in his SyiHngolites Huronensis, we have 

 precisely such a form ; and we are thus presented with a true 

 member of the Favositidce, which, in one of the most striking 

 points of its organisation, offers a distinct approximation to 

 certain of the forms included under the genus Syringopora. It 

 need only be added here that the present form is generically 

 distinguished from all those ordinarily ranged under Syringo- 

 pora, not only by the close union of the polygonal corallites 

 and the total absence of connecting-processes, but also by the 

 possession of mural pores in all respects resembling those 

 found in the type-species of the genus Favosites. 



Genus Laceripora, Eichwald, i860. 

 (Lethsea Rossica, p. 490.) 



Gen. Char. — " Corallum thick, elongated, curved, ramose, of 

 almost cylindrical branches ; the calices angular, unequally- 

 sized, united with one another [by their walls], and provided 

 with two, three, or more rudimentary vertical lamellae. The 

 corallites radiate regularly from a cellular or porous central 

 axis, and are intersected by thick tabulae, which are placed at 

 the same level in different tubes, so as to form a succession of 

 superimposed layers. The margins of the calices are crenu- 

 lated or uneven ; they may or may not be provided with rudi- 



