114 
DESMEPORID^. 
D. 3949, A few brauches of a zoarium, showing numerous sections in different 
directions. Middle Chalk — zone of Micraster cortestudinarium. 
Chatham. Gamble Coll. 
D. 4344. A zoarium in flint. Middle Chalk — zone oi Micraster cortestudinarium. 
Chatham. Gamble Coll, 
D. 4380. A zoarium in chalk. Lower Chalk — zone of Holaster planus. Dover. 
Presented by William Hill, Esq., F.G.S. 
D. 4381. Another zoarium with less raised fasciculi. Chalk — zone of Holaster 
planus. Dover. Presented by William Hill, Esq., F.G.S. 
D. 4411, D. 4412. Three specimens. Chalk. Dover. Old Coll. 
D. 7285. A long branch in chalk. Upper Chalk. Loc. ? Toulmin Smith 
Coll. 
D. 11,797. Upper Chalk. Beachy Head. Presented by Dr. J. W. Gregory. 
Foreign. 
D. 5802. A fragment on slide. Seuonian. Riigen. A. Laur Coll, 
D. 6308. A fragment on slide. Senonian. Riigen. A. Laur Coll. 
D. 6309 A fragment on slide. Seuonian. lliigeu. A. Laur Coll, 
D. 6310. A fragment on slide. Seuonian. Riigen. A. Laur Coll, 
60,384. A zoarium. “Chalk.” Xear Le Mans (?j. Tesson Coll. 
2. Desmepora blackmorei, Gregory, 1909. 
Synonymy. 
Desmepora blackmorei, Gregory, 1909. New Cret. Bry. : Geol. Mag. dec. 5, 
vol. vi. p. 62. 
Diagnosis. 
Zoarium of flat, broad branches. The apertures open on the 
ends of short ridge-like lateral processes, which project along 
the sides of the stems ; these lateral processes are irregularly 
elliptical ; the apertures are generally biserial, with about 
eight apertures in each row, and the series are placed 
horizontally. 
The reverse surface is covered by crowded rows of small round 
pores (cancelli), and the surface is slightly concave. 
mm. 
14 
5 wide X 2*5 thick 
about 5 
„ 5 
„ 8 
1 - 1-2 
•1--15 
Dimensions. 
Length of branch of type-specimen 
Diameter of branches 
Length of pinnules 
Vertical width of pinnules 
Horizontal width of pinnules 
Distance of centres of adjacent lateral processes.. 
Diameter of apertures 
