376 
PETALOPOEA. 
Foreign. 
D. 4630. A fragment of the form royana (on slide). Turonian : Craie marneuse. 
Villardin, Loir-et-Cher. Purchased 1898. 
J). 4628. Six fragments (on slide). Senonian: Craie de Villledieu. Luyues, 
Indre-et-Loire. Pm-chased 1898. 
D. 4631. A fragment of the form royana (on slide). Turonian : Craie 
marneuse. Villardin, Loir-et-Cher. Purchased 1898. 
D. 4460. Six branches (on slide) . Senonian: Quadermergel. Salzberg, uoar 
Quedlinhurg. Presented by Prof. H. Credner. 
2. Petalopora cunningtoni, nov. 
Diagnosis. 
Zoarium of stout, short, cyTindrical, dichotomous branches, which 
tend to grow in a single plane. Ridges imperfectly developed. 
Apertures uniformly distributed and sometimes in transverse 
rows. Maculae about three or four pairs to each zooecium. 
Dimensions. 
Diameter of branch ... ... ... *8-1-6 mm. 
Diameter of zooecia ... ... ... *15 ,, 
Diameter of aperture ... ... ... *08 ,, 
Disteibution. 
Lower Greensand : Farringdon ; ? Folkestone. 
Figtjees. 
PI. XII. Fig. 11 <7, a zoarium, nat. size. Fig. Hi, part of the 
same, X 10 dia. Lower Greensand : loc. (probably Folkestone). 
Harford Coll. D. 2301. 
PI. XII. Fig. 12. A longitudinal section, X 10 dia. Lower 
Greensand : Farringdon. Cunnington Coll. D. 5130. 
PI. XII. Fig. 13. Part of a branch, X 10 dia. Lower 
Greensand : Faningdon. Cunnington Coll. D. 7104. 
Affinities. 
This species is allied to P. costata by the unifoiTQ distribution 
of the aperfures ; hut the branches are shorter and stouter, and 
the longitudinal ribs are less developed. 
LIST OF SPECIMEXS. 
D. 2301. A zoarium and a fragment of another. Lower Greensand. Loc. r 
Harford Coll. Figd. PL XII. Fig. 11. 
D. 5130. A longitudinal section. Lower Greensand. Farringdon. Cunnington 
Coll. Figd. PI. XII. Fig. 12. 
