INTERS ASIA. 
353 
D. 1359. Two fragments (on slide). Maastrichter Kreide. Maastricht. 
Vine Coll. 
D. 1365. Two fragments (on slide). Maastrichter Kreide. Maastricht. 
Vine Coll. 
D. 6335. Three thick fragments (on slide). Maastrichter Kreide. St. Pierre, 
Maastricht. Busk Coll. 
D. 3320, A specimen of var. mUleporacea. Maastrichter Kreide. Maastricht. 
Old Coll. 
D, 3401. Eighteen branches of var. mUleporacea (in tube). Maastrichter 
Kreide, Maastricht. Van Breda Coll. 
D. 6330. Three thick fragments (on .slide). Maastrichter Kreide. St. Pierre, 
Maastricht. Busk Coll. 
D. 3413. A branched fragment of var, mUleporacea (on slide). Maastrichter 
Kreide. Maastricht. Van Breda Coll, 
D. 7099. A fragment of var. mUleporacea (on slide). Maastrichter Kreide. 
Maastricht. Van Breda Coll. 
D. 7100. A fragment of var. mUleporacea (on slide). Maastrichter Kreide. 
Maastricht. Vine Coll. 
D. 3396. A longitudinal section (on slide). Maastrichter Kreide. Maastricht. 
Van Breda Coll. 
])lAGNOSIS. 
Zoarium of thick, dichotomous hranches, which end bluntly. 
Zooccia hexagonal externally. The sutures raised. 
Apertures semicircular, arranged irregularly and obliquely to 
the main axis of the branch. The proximal portions of the 
zooecia are subcircular (not elliptical) in section. 
Avicularia triangular, broad at the base, tapering above, with 
concave sides. 
Dimensions. 
2. Inversaria orbicularis/ nov. 
Diameter of branch 
Diameter of zooecia 
Diameter of aperture 
External length of avicularium 
Distribution. — Upper Greensand : Warminster, Wilts. 
1 From the circular shape of ivorn zooecia. 
AA 
