394 
SPAESICAVEA. 
zoarimn is thus cut up into hexagonal areas by the lines of 
maculae. The apertures may occur in the centre of these 
hexagonal areas, hut usually at the upper end, above a tumid, 
oval area like the front wall of a Lepralia or a Mucronella. 
Disteibution. 
Senonian — Maastrichtian ; Maastricht; Falkenberg; St. Pierre; Petit 
Lanaye; Heer ; J^^eu Warthau, Silesia [fide Drescher). 
Affinities. 
Yon Hagenow gave one figure of this species (Bry. Maastr. Kr. 
pi. V. fig. 15^), which has the general appearance of a Cheilo- 
stomatous Biyozoan ; but there are in the ^luseum collection 
a series of specimens which show that von Hagenow was correct 
in including in one species the different specimens figured by him. 
The apparently hexagonal zooecia and tumid front wall are due 
to the arrangement of the maculae, in zigzag, simple lines. 
Beneath the apertures there is accortlingly left a raised tubercle, 
free from maculae. 
The longitudinal series of apertures gives a somewhat Petalo- 
poroid aspect to worn specimens. 
LIST OF SPECIMENS. 
D. 3738. Two fragments, one very well preserved (on slide). Maastrichter 
Kreide. Petit Lanaye. Gamble Coll. 
D. 3294. Two branched zoaria (on slide) . Maastrichter Kreide. Maastricht. 
Old Coll. 
D. 3759. Three fragments (on slide). Maastrichter Kreide. Maastricht. 
Gamble Coll. 
D. 6338. Seven worn fragments (on slide). Maastrichter Kreide. St. Pierre. 
Busk CoU. 
D. 3355. The thick base of a zoarium. Maastrichter Kreide. Maastricht. 
Van Breda Coll. 
D. 1376. A branched fragment. Maastrichter Kreide. Maastricht. Vine Coll. 
D. 1378. Two fragments, one of which shows the well-preserved tubercles 
below the apertures. The other specimen has the maculse in 
sinuous, longitudinal series. Maastrichter Kreide. Maastricht. 
Vine Coll. 
D. 3457. A specimen (on slide). Maastrichter Kreide. Maastricht. Van 
Breda Coll. 
? D. 1284. Two very worn and rolled fragments. The specimen is labelled by 
Vine as from Le Mans, a Cenomanian locahty ; but the aspect of 
the specimens suggests that they came from Maastricht. Vine CoU. 
D. 6337. Several specimens (on slide). Maastrichter Kreide. Maastricht. 
Busk Coll. 
