PLATE XXII. 



Rhabdammina — Jaculella. 



Figures 1-G. — Rhabdammina linearis, Brady, 



Figs. 1-4. Specimens illustrating the range of form, 

 Fig. 5. Test laid open to show the interior, 

 Fig. 6. Portion of the surface more highly mag- 

 nified, . . . x 60 



„ 7-10. — Rhabdammina discreta, Brady, .... 268 



Figs. 7, 8, x 10 diam.; fig. 10, . . . . x 8 



Fig. 9. Test laid open to show the interior, . . x 1 



., 11-13. — Rhabdammina cornuta, Brady, .... 270 



Figs. 11, 13, x IS diam.; fig. 12, . . x 13 



,, 14-18. — Jaculella acuta, Brady, . . . x 12 255 



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

 Figs. 17, 18. The test fractured transversely. 



19-22. — Jaculella obtusa, Brady, . . . x 12 25G 



Figs. 19, 20. Adult specimens. 



Figs. 21, 22. Young or broken tests; the bulbous 

 extremities armed with sponge spicules. 



