418 
CLArSA. 
places somewhat irregular. The apertures are circular, or the 
lower edge may he straight. Dactylethroc few and scattered. 
Eelow the aperture is a depression or facet. The suiiace of 
the zoarium may he marked into lozenge-shaped areas by tlie 
interzooecial sutures. 
Dimensions. 
Diameter of branch ... ... ... l-l'o mm. 
Diameter of zooecia ... ... ... ,, 
Diameter of aperture ... ... ... *l ,, 
Figuke. 
Fig. 59. Longitudinal section of a branch, x 11 dia. 
Maastrichtcr Kreide : ^laastricht. Vine Coll. D. 1379. 
Fig. 59 . — Claum vaykdnUs (Hag.). Longitudiual section. 
Disteibution. 
Senoniau — Maastrichtiau : Maastiicht ; St. Pierre ; Falkeuberg. 
Affinities. 
This species resembles C. irregularis in the characters of the 
dactylethrge. One of them below the aperture has a tumid 
covering, which externally appears like a facette, and the species 
thus presents a certain resemblance to the Eleidae ; but the longi- 
tudinal section (Fig. 59) shows that the zooecial characters are 
different. 
LIST OF SPECIMENS. 
- 
D. 
1379. 
Two fragments (on slide). 
Vine Coll. Figd. J^o. 59. 
Maastrichter 
Kreide. 
Maastricht. 
D. 
1382. 
Three fragments (on slide). 
Vine Coll. 
Maastrichter 
Kreide. 
Maastricht. 
