PLATE XLVIII. 



Clavulina. 



Figures 1-13. — Clavulina communis, d'Orbigny, . 



Figs. 1, 2. Lateral aspect ; fig. 6, oral aspect, 



Eig. 3. Lateral aspect, . 



Fig. 4. Arrested specimen. 



Fig. 5. Monstrous specimen, _ . 



Figs. 7, 8. Longitudinal sections of the test, 



Figs. 9, 10. Long specimens, lateral aspect ; fig. 11, oral 

 aspect, . . 



Fig. 1 2. Similar specimen laid open to show the interior 



Fig. 13. Portion of a longitudinal section more highly 

 magnified, showing the minute structure of the 

 test, .... 



x 100 



., 14 18. — Clavulina ■ parisiensis, d'Orbigny, 



Figs. 14, 15. Lateral aspect ; fig. '16, oral aspect, 

 Figs. 17, \$<t. Lateral aspect ; h, oral aspect, 



x 18 

 x 30 



395 



,, 19-21. — Clavulina parisiensis, var. humilis, nov., 



Figs. 19, 20, 21 a. Lateral aspect; h, oral aspect. 



x 40 



39.5 



•22-24. — Clavulina angularis, d'Orbigny, . 



Figs. 22, 23, 24 a. Lateral aspect : //, oral aspect. 



X •'..) 



396 



,, 25-31. — Clavulina angularis, var. difformis, nov., 



Figs. 25-27. Lateral aspect ; figs. 28-31, oral aspect. 



x 40 



396 



.. 32-38. — Clavulina cylindrica, Hantken, . 



Figs. 32-35. Lateral aspect ; figs. 36, 37, oral aspect, . 

 Fig. 38. Longitudinal section, showing the minute 



structure of the test and the arrangement of the 



chambers, . 



396 



20 



15 



