VIXE : NOTES ON FOSSIL POLTZOA. 
381 
Phillips', formed one of the earliest of my studies of Palseozoic 
fossils ; and nearly the whole of the material that I shall use in this 
paper have lain by me for years. As, however, it will be necessary 
to redescribe the whole of the Yorkshire Calamoporee, I must be 
forgiven if I follow m}- own methods in doing so. 
Genus Monticulipora, P'Orb, 1850. 
S^e Nicholson for references. "Tabulate Corals," 1879, pp. 
269-70. " Genus Monticulipora," 1881. For structure and affinities 
see his last work, the " Genus Monticu'ipora." 
1. — Monticulipora tu:mida, Phill. 
CcUamopora tumida, Geo. of Yorks., Vol. TI., pi. I. 
Monticulipora tumida, Nicholson : " Genus Monticulipora," 
p. 120 (restricted), PI. III., Figs. 1 & 2. 
Corallum dendroid, stems cylindrical or depressed ; varying in 
thickness from one-and-a-half to two lines ; occasionally tumid at 
varying distances. Calices irregularly polygonal, circular or oval ; 
from four to five calices occupy the space of half a line. Peristome 
or walls of calice entire, surrounded by a number of blunt spines, 
which in transparent or semi- trans ^jarent sections occupy the intervals 
between the calices. Monticules " and ''Maculae," occasionally 
developed. 
Localities: Richmond and Hurst. 
The above characters are drawn up from my Hurst and Richmond 
specimens only, but with Nicholson's description of his 31. tumida 
before me. Besides that described, I have also specimens of the so- 
called M. tumida, Phill. for comparison from Redesdale : Haltwhistle, 
two distinct forms ; Derbyshire : and from Halken in Wales. I 
have the Scotch forms from several horizons, but in consideration of 
Mr. Young's work, the whole of these are excepted. So far as the 
external features can be taken as guides for identification, I am not 
at all surprised that Phillips' Culamopora has been, and perhaps will 
continue to be, a source of bother to collectors. My special labours 
on the species, however, have more direct reference to the closer 
comparisons necessitated by the analytical methods which modern 
Palaeontological researches demand, especially so from my own 
standpoint with regard to the future placement of Palaeozoic Mon- 
