112 On Polyzoafrom Icelayid and Labrador. 



13. Cellepora ovata, Smitt, 



The specimens of this form from Labrador and Iceland are 

 identical in character. 



Cyclostoinata. 



14. Crista eburnea, Linn. 

 [Mediten*anean ; Madeira ; Australia.] 



15. Tubulipora JlabeJlai'iSj Jolmst. 



16. Discoporella verrucaria, Fabr. 



Of the foregoing species eight, or half the number, are not 

 included in Packard's list of the Polyzoa of South Labrador. 

 Fourteen arc common to the American coast and the Arctic 

 seas. Ten arc British. Two are Mediterranean forms, both 

 of them having a very wide range. 



EXPLANATION OF THE PLATES. 



Plate X. 



Fiff. 1. Lepralia porifera, Smitt. 



Fig. 2. The same, showing the ovicell. 



Fiji. 3. Lcprtdia reticichto-punctata, Ilincks. 



Fig. 4. The same, more highly magnified. 



Fig. 5. Lepralia propinqua, Smitt. 



Fig. C. The same, more highly magnified. 



Fig. 7. \jax^e &\\c\i[axmvii oi Lepralia pi'opinqua. 



Fig. 8. Ditto of Eschara Landshorovii, Johnston. 



Figs. 0-14. Lepralia radiatula, Hincks. 



Plate XI. 



Fig. 1. Lepralia trispinosa, Johnston, var. 



Fig. 2. Lepralia (LUscopora) sincera, Smitt. 



Fig. 3. Cellepora plicata, Smitt. 



Fig. 4. The same. 



Fig. 5. Cellepora ovata, Smitt. 



Fig. 6. Cellepora bilnniinata, a, Hincks, 



Fig. 7. The same, h. 



Fig. 8. Lepralia tubulosa, Norman. 



Fig. 9. JRetepora Walliehiana, Busk, MS. 



Fig. 10. The same ; a portion of the dorsal surface. 



Fig. 11. The same, a fragment of about the natural size, showing the 



shape of the fenestras. 

 Fig. 12. The same, a single cell and ovicell. 

 Fi(/. 13. The same, avicularium in profile, showing the strongly developed 



beak. 



i 

 I 



