POLYZOA. 141 



REPTOCEA LOBOSA, sp. nov. 

 (Plate vii. fig. 15, a. 6.) 



Description. Polyzoarium encrusting, but developing upwards 

 into more or less clavate lobes, which may again divide into bi- or 

 tri-lobed prominences. A somewhat botryoidal aspect may thus 

 be produced. 



The cell apertures are obliquely set, expanded and trumpet- 

 mouthed ; in outline sub-triangular or broadly pyriform. They 

 stand in quincunx order. 



The form of the whole cell-colony, as well as the shape of the 

 cell-apertures, at once distinguish this species. 



Locality. Brickhill. 



HETEROPORA (MULTIZONOPORA) RAMOSA, Roemer. 



Heteropora ramosa, Rom. 1836. Oolit. Supplement, pi. 17, f. 17. 

 Ceriopora arborea, Dunker and Koch. 



Multizonopora ramosa, d'Orb. Pal. Fr. Terr. Cret v. p. 927, 

 pi. 772, f. 13. 



The semizonary arrangement of the cell-mouths is not always 

 clear, but may be seen in many specimens. 

 Localities. Up ware. 



N. Europe. Schoppenstedt, Brunswick. 

 S. Europe. St Croix, Yonne, Haute Marne. 



HETEROPORA (MULTICRESCIS) MICHELINI, d'Orbigny. 

 Heteropora cryptopora, Michelin (non Goldfuss). 

 Multicrescis Michelini, d'Orb. 



Localities. Upware (?), Brickhill, Farringdon. 

 S. Europe. Grandpre', Ardennes (Albien, d'Orb.). 



HETEROPORA COALESCENS, Reuss. 



Heteropora coalescens, Reuss, in Geinitz, Palceontographica, 1871, 

 i. p. 131, pi. xxxn., f. 10 12. 



A zonary arrangement of the cell apertures may be detected 

 over portions of the branches, but for the most part the cells are 

 scattered as in Geinitz's figure. 



Localities. Upware, Brickhill. 

 N. Europe. Dresden (Untere Quader). 



