NODELEA. 
311 
PI. XIY. Pig. 7. Part of a brancli with irregularly arranged 
zooecia, many of which are closed by a two-pored cap ; X 10 dia. 
Middle Chalk : Chatham. Gamble Coll. D. 351. 
PI. XIV. Pig. 8. Part of a zoarium with a broken gonocyst; 
X 16 dia. Middle Chalk : Chatham. Gamble Coll. D. 3997. 
PI. XIY. Pig. 9. Part of the base of a zoarium; the base of 
the erect stem is seen by the lower edge of the figure : x 7 dia. 
Middle Chalk : Chatham. Gamble Coll. D, 4243. 
PI. XIY. Pig. 10. A branch with a piriform gonocyst ; X 12 dia. 
Middle Chalk : Chatham. Gamble Coll. D. 3996. 
PI. XIY. Pig. 11. Part of a branch covered by a thin epithecal 
crust ; X 1 0 dia. Middle Chalk : Chatham. Gamble Coll. D. 3992. 
PI. XIY. Pig. 12. Part of a thin branch with a broken gonocyst ; 
X 10 dia. Middle Chalk : Chatham. Gamble Coll. D. 359. 
PI. XIY. Pig. 13. Part of a branch with a complete, ovoid 
gonocyst; X 10 dia. Middle Chalk: Chatham. Gamble Coll. 
D. 359. 
LIST OP SPECIMENS. 
D. 2718. A fragment with mostly closed zooecia, a zooecium with a suhoral 
pore, and a gonocyst. Middle Chalk. Chatham. Vine Coll. Figd. 
PI. XIY. Fig. 4. 
D. 4112. A typical fragment (on flint). Middle Chalk. Chatham. Gamble 
Coll. Figd. PI. XIV. Fig. 0 . 
D. 2699. A branch with ringed closures and some zooecia with a central pore. 
Middle Chalk. Chatham. Vine Coll. Figd. PL XIV. Fig. 6. 
D. 351. Two fragments with the closed zooecia ; many of the closed zooecia 
have double pores. Middle Chalk. Chatham. Gamble Coll. 
Figd. PI. XIV. Fig. 7. 
D. 3997. A branch, on an irregular variety, with gonocyst (on slide). Middle 
Chalk. Chatham. Gamble Coll. Figd. PI. XIV. Fig. 8. 
D. 4243. A base on an echinid fragment. Middle Chalk. Chatham. Gamble 
Coll. Figd. PI. XIV. Fig. 9. 
D. 3996. Two branches, one with gonocyst (on slide). Middle Chalk. 
Chatham. Gamble Coll. Figd. PI. XIV. Fig. 10. 
D. 3992. Three fragments (on slide). The largest specimen is partly covered 
by ail epithecal crust, beneath which the apertures are marked only 
bv small spiny elevations. Middle Chalk. Chatham. Gamble 
Coll. Figd. PI. XIV. Fig. 11. 
D. 359. Two fragments with gouocysts (on slide). Middle Chalk. Chatham. 
Gamble Coll. Figd. PI. XIV. Figs. 12 and 13, one broken with 
three internal apertures. 
D. 354. Three specimens (on slide), one showing transverse and another 
longitudinal sections. Middle Chalk. Chatham. Gamble Coll. 
