BRYOZOA OF THE CAPE YERDE ISLANDS. 45 



Fig. 4. Tubulipora Lamourouxii, X 25. (ocec.) ooeciostome. (a) x 3. 

 5. Do. do. x 25. Dorsal surface of fig. 4. 

 0. Do. do. x 25. The lower part is obscured by Lithothamnhim growth. 



7. Tubulipora incrassata, x 25. The magnification of this is the same as of 



figs. 4, 5, 6, 10. (Juv.) is the early growth of T. Lamourouxii, Aud., and the 

 difference in the size of the zooscia of the two species is very marked. 



8. Tubulipora pulchra, X 8. 



9. Do. do. x 25. Dorsal surface. 



10. Tubulipora Lamourouxii, X 25. (a) x 3. 



11. Do. do. X 12. Primary and a few zocecia. 



Plate 4. 



Fig. 1. Liehenopora irregularis, var. composita, var. no v. This form is bi-multiserial, 

 X about 4. 



2. Liehenopora irregularis, X about 4. This form is uniserial and there are ovicells. 



3. Do. do. X 2-5. Small uniserial colony. 



4. Liehenopora irregularis, var. composita, var. nov. Uniserial form showing the 



elongate extension of the subcolonies. 



5. Liehenopora irregularis, x 3 - 5. Ovicells showing several pits. 



6. Do. do. Ovicell of fig. 2, more magnified. 



7. Do. do. Showing pit at the base of which the upper wall of an ovicell is 

 seen, proving the existence of a subcolony at a lower level. 



8. Do. do. x 25. Zooecia showing the spinous elevation surrounded by 

 cancelli. 



9. Thalamoporella Rozierii, X 25. Dorsal surface, showing through the walls 



bundles of spicules near the opesiules. (a) Spicule nearly straight, X 85; 

 (b) spicule "curve," x 250; (c) bent spicule, X 250. It should be noticed that 

 the last two are more magnified than (a). 



10. Adeonella contorta, x 85. Aperture. 



11. Do. do. x 25. Zooecia near growing end. 



12. Do. do. x 85. Mandible. 



13. Do. do. X 25. Operculum. 



14. Do. do. X 25. Lateral view, showing large vicarious avicularia. 



15. Do. do. Natural size. 



