yODELEA. 
307 
]. Nodelea semiluna, d’Orbigny, 1853. 
SrXOXTMY. 
Xodili-a semihuKi, cl’Orbiguy, 18-53. Bit. Cret. p. 611, pi. 735, figs. 9-11. 
,, ,, Bucaille, 1890. Bry. Seine-Inf. : Bull. Soc. Sci. uat. Rouen, 
VOl. XXV. p. oil. 
^[dicel•^tit(-.s compi'f'xxa, pars, Pergens, 1890. Revision, p. 394. 
,, ogicaUo, d'Orbigny, 1853. Bry. Cret. p. 624, pi. 737, figs. 8-10. 
Diagnosis. 
Branches dichotomous, fairly stout. 
Apertures semicircular or subtriangular, and arranged in regular 
transverse series, disturbed only near the gonoecia. The 
rows are crowded. Peristomes well raised. 
Zooecia rhomboidal to hexagonal, with a small triangular front 
wall below the aperture. 
Gonoecia about thrice the size of the zooecia. 
1)IMENSI0NS. 
Fide Pergens 
{compressa). 
Diameter of branch ... — 
Diameter of zooecia ... *22-*24 mm. 
Diameter of aperture: transverse -11 ,, 
B.M., D. 4831. 
2 mm. 
•25 „ 
•15 „ 
Figoee. 
Fig. 34. 
X 10 dia. 
Fig. 34. — Nodelen semiluna, Orb. 
Part of a somewhat worn branch showing the gonoecia ; 
Turonian — Craie marneuse : Yillardin. D. 4831. 
Distkibutiox. 
Senonian — Maastriclitian : Royan, Charente-Inferieure. 
Santonian : Saintes, Charente-Inferienre. 
Coniacian: Tours, ludre-et-Loire ; Les Roches, Loir- 
et-Cher. 
