434 
ADDENDA. 
XE 70, after the genus Filisparsa acid : 
riLICRISINA, d’Orhigny, 1853. 
[Bry. Cict. p. 910.] 
Diagnosis. 
Diastoporida) with the zoarimn composed of cylindrical or com- 
pressed branches, whicli are dichotomous, and may anastomose 
into a reticular zoarium. The obverse face is bare, and its 
walls are imperforate. 
Ax)ertures jdaced in com})lete, continuous rows across the obverse 
face. The reverse face bears only snndl pores of the exnthecal 
tnbnli. 
Type Species. 
Filicrisina rdifonnis^ d’Orbigny, 1853-4. Senonian : France. 
This genus differs from Filisparsa by Inning the reverse face 
strengthened by a series of rinlimentaiy zooccia whicli open by 
small pores. Tliis layer may be strengthened further by an 
epithecal lamina. 
Filicrisina verticillata, d’Orbigny, 1853-4. 
Synonymy. 
Filicrisina verticillata, d’Orbigny, 1853-4. Ihy. Cret. p. 911, pi. 769, 
figs. 5-10.^ 
,, ,, Staring, 1860. Bod. Nederl. vol. ii. p. 402. 
,, ,, Marsson, 1887. Bry. Eug. : Pal. Abh. vol. iv. p. 33. 
,, ,, Ubagbs, 1888. Bull. Soc. beige Geol. vol. i., Mem. 
p. 233. 
,, ,, rergeus, 1890. Eevision, p. 352. 
Diagnosis. 
Zoarium op)en and dichotomous; the branches are cylindiical. 
The apertures are large and occur in transverse rows of from 
four to six. The reverse face is marked by lozenge-shaped 
areas and by small ridges; the tubuli are scattered irregularly. 
Dimensions. 
B.M., D. 3269. 
Diameter of branch ... ... ... ... 1 mm. 
Diameter of zooecia ... •16-*25 ,, 
Diameter of aperture ... ... ... ... -12--16 ,, 
^ Marssou excluded fig. 8 as a Melicertitcs, interpreting the pores of the tubuli 
as zooecial apertures. 
