284 
HAMMIA. 
The structure of the zoarium is illustrated by the longitudinal 
section shown on Fig. 29, in which, however, the separation of 
the axial bundle is too sharply marked. 
LIST OF SPECI^klENS. 
B. 3477. 
Two fragments (in tube). Maastrichter Kreide. Maastricht. ^ an 
Breda Coll. 
B. 3629. 
Three fragments (in tube). Maastrichter Kreide. ^laastricht. an 
Breda Coll. 
B. 3532. 
Two fragments with clasping bases (on slide). ^Maastrichter Kreide. 
Maastrichter. Van Breda Coll. 
B. 3535. 
Two fragments (on shde). Maastrichter Kreide. 3Iaastricht. ^ an 
Breda Coll. 
B. 3637. 
Twenty fragments (in tube) and one slide containing a longitudinal 
section. ^laastrichter Kreide. Maastricht. Van Breda Coll. 
B. 3538. 
Eleven fragments (in tube). ^Maastrichter Kreide. Maastricht. 
Van Breda Coll. 
B. 3561. 
Two fragments (on slide). Maastrichter Kreide. ^laastricht. Van 
Breda Coll. 
B. 3562. 
Two fragments (on slide) . Maastrichter Kreide. 31aastricht. Van 
Breda Coll. 
B. 3563. 
Two fragments (on slide). Maastrichter Kreide. ^Maastricht. Van 
Breda Coll. 
B. 3569. 
Fifty fragments and two slides with longitudinal and transverse 
sections. Maastrichter Kreide. Maastricht. Van Breda Coll. 
B. 3573. 
Figd. Ko. 29, p. 283. 
A branched Avorn fragment (on slide). Maastrichter Kreide. 
Maastricht. Van Breda Coll. 
B. 3778. 
A small worn fragment (on slide) . Maastrichter Kreide. Maastricht. 
Gamble Coll. 
B. 3559. 
The basal part of a zoarium. Maastrichter Kreide. Maastricht. 
Van Breda Coll. 
B. 1380. 
Two fragments (on shde). Maastrichter Kreide. ^ Maastricht. 
Vine Coll. 
B. 3331. 
A branched fragment (in tube). Maastrichter Kreide. Maastricht. 
Van Breda Coll. 
B. 3493. 
Two fragments (on slide). Maastrichter Kreide. Maastricht. Van 
Breda Coll. 
D. 3631. A thick branched fragment (on shde). Maastrichter Kreide. 
Maastricht, Van Breda CoU. 
D. 3533. A branch (on slide). Maastrichter Kreide. Maastricht. Van 
Breda Coll. 
B. 3534. Three fragments (on slide). Maastrichter Kreide. Maastricht. Van 
B. 6447. 
Breda Coll. 
Two branched fragments (on shde). Maastrichter Kreide. Maastricht. 
Busk Coll. 
B. 6447. 
