BRYOZOA OF WOODS HOLE REGION. 26 1 



EXPLANATION OF PLATES. 



PLATE XVIII. 



Fig. I. Loxosoma davenporti. 



Fig. 2. Loxosoma minula, n. sp., drawn to same scale as fig. i. 



2a. The same, much enlarged, in contracted condition. 

 Fig. 3. Pedi'ce/ijKa cernaa, ordinary form of zooecium. 



3a. The same, smooth form, the glabra of Hincks. 



3b. The same, with spinous stalk, the echinala of Sars. 



3c. The same, with spinous calyx, the hirsxila of Jullien. 



3d. The same, with spinous stalk and calyx. 

 Fig. 4. Barentsia major. 

 Fig. 5. Barentsia discreta, partially expanded. 



5a. The same, detail of stalk. 

 Fig. 6. Crista eburnea, portion of a branch. 



6a. The same, ooecium. 



6b. The same, ooeciostome much enlarged. 

 Fig. 7. Crisia cribraria, portion of colony, showing the long sinuate intemodes. 



7a. The same, ooecium. 



7b. The same, ooeciostome much enlarged. 

 Fig. 8. Crisia denticulata, portion of branch showing oviccll and ooeciostome, from an English specimen. 

 Fig. 12. Stomaiopora diasloporoides, colony, size of specimen i/i inch. 



12a. The same, detail of portion of colony at edge. 

 Fig. 13. Lichenopora verrucaria, colony, size of specimen J » inch. 



13a. The same, two views of a zooecial tube. 



T3b. The same, ooeciostome, at same magnification as 13a. 



PL.\TE -XIX. 



Fig. 9. Tubulipora atlaniica, specimen from Crab Ledge. Drawn by H. J. Shannon. 

 9a. The same, detail of ovicell and ooeciostome. Drawn by H. J. vShannon. 



PLATE XX. 



Fig. 10. Tubulipora litiacea. a colony from Vineyiml Sound, characteristic of the species in this region. 

 Drawn by H. J. Shannon, 

 loa. The same, detail of ovicell and ooeciostome. Drawn by H. J. Shannon. 

 Fig. II. Tubulipora fllabcllaris, detail of oviccll and ooeciostome. DrawTi by H. J. Shannon. 



PLATE XXI. 



Fig. 14. ,Eka anguina, a single zooecium showing the basal enlargement. 



14a. The same, showing membranous ooecium with embryo. 

 Fig. IS- Eucraica chclala, after Hincks. 



