428 
ZOKOPOKA. 
Diagi^osis. 
Zoarium branched ; the ridges of the screw are well rounded. 
Apertures irregularly arranged and crowded ; about four serit's 
in each band. The apertures do not occur in detinite vertical 
series, separated by grooves. 
Distribution. 
Senoniau — Maastrichter Kreide : Maastricht; Falkenberg. 
LIST OF SPECIMEXS. 
D. 3034. Three branches (on slide). Maastrichter Kreide. Maastriclit. Van 
Breda Coll. 
D, 3035. Thirty fragments, two shoAving the base and the thick, irregular 
basal branch. Maastrichter Kreide. Maastricht. Van Breda Coll. 
D. 3028. A branch (on slide). Maastrichter Kreide. Maastricht. Old Coll. 
J). 3309. Three branches (on slide). Maastrichter Kreide. Maastricht. 
Old Coll. 
D. 3751. A branched fragment (on slide). Maastrichter Kreide. ^Maastricht. 
Gamble Coll. 
,D. 3332. A branch (on slide) . Maastrichter Kreide. Maastricht. Van Breda 
Coll. 
D. 3310. Twelve branches. ]\[aastrichter Kreide. Maastricht. Van Breda 
Coll. 
D. 3335. Two malformed branches (on slide). ^Maastrichter Kreide. 
Maastricht. Van Breda Coll. 
60,158. Seventy-eight branches. Maastrichter Kreide. Maastricht. Van 
Breda Coll. 
D. 6396. Five fragments (on slide). Maastrichter Ki-eide. Falkenberg. 
Busk Coll. 
D. 1384-5. Three fragments (on two slides). Maastrichter Kreide. Maastricht. 
Vine Coll. 
DXREPRESEXTED AXD DOUBTFUL SPECIES. 
1. ? biformis (Bbmer), 1839. 
Syn. Pustulopora hiformis, Homer, 1839. Verst, nordd. Ool. : Xachtr. p. 12, 
pi. xvii. tig. 20. 
,, ,, Homer, 1840. Verst, nordd. Kr. p. 22. 
? Spiroclausa neocomietisis, de Loriol, 1863, Invert. Mt. Sal. p. 137, 
pi. xvii. tig. 7. 
Char. — Stems constricted. Apertures biserial or triserial bands. Dactylethrm (?) 
small, occupying the constricted portions of the stems. 
Distrib. — Neocomian — Hilsconglomerat : Schoppenstedt, Hannover ; La 
Varappe, Mont Saleve, Switzerland. 
