278 Oy THE GLAND-LIKE BODIES IN THE BRYOZOA. 



EXPLANATION OF PLATE XIX. 



Fig. 1. Section through the avicularian chamber of Lepralia foUacea, Ell. & Sol. 

 m, mandible ; g, gland-like bodies, the left one is shown in section, 

 the right-hand one shows the surface ; c, " cellular body." X 250. 



2. Longitudinal section of the avicularian chamber of Lepralia foliacea 



cutting through the gland-like body. X 250. 



3. Avicularium of BiccUaria molitccensis, Busk. — on, &c. as above. X 125. 



4. Section of zooecium of Lepralia foliacea showing the avicularian chamber 



in situ. The polypide is given in order that the relative position may 

 be better understood, and although the different parts ai-e drawn 

 somewhat diagrammatically, all are taken from actual specimens. 

 The sacs are shown in section. X 85. 



5. Avicularian chamber oi Lepralia foliacea. X 85. 



6. Gland-like body of Schizoporella sanguinea, Norm. X 500. 



7. Operculum and distal end of Bchizopordla sanguinea. The gland-like 



bodies are shown in section. X 85. 



8. Ditto, showing (a) growth from tissue at the opercular end. The right 



gland-like body is shown in section and with an attachment to the 

 zooecial wall. X 85. 



9. The prolongation of this tissue has now grown into the median body 



(s), which lies diagonally across the upper part of the zocecium. 

 X 85. 



10. Ditto, (s) hangs from the centre attached merely by a fine cord. 



X 85. 



11. Longitudinal section of a median body from Schiso'porella sanguinea, 



showing the refracting masses. X 250. 



12. Ditto. Transverse section. X 250. 



13. Nucleated cells of gland of Schizoporella sanguinea. X 500. 



14. Section of Betepora cellulosa, L., showing vicarious avicularia with gland- 



like bodies. Each avicularium is connected through rosette-plates 

 to two zooecia. X 85. 



15. Distal end of Smittia nitida, var. opJiidiana, Waters. X 85. 



16. Distal end of Smittia trispinosa, Johnst. X 85. 



