JOURNAL OF MICROSCOPICAL SCIENCE. 



DESCRIPTION OF PLATES I AND II, 



Illustrating " Notes on a Peculiar Form of Polyzoa closely 

 allied to Bugula {Kinefoskias, Kor. and Dan.)." 



Fig. 1.»— Front view of Einetoskias cyathus, C. W, T. 



a. a, a, a, «. The flexor muscle. 



b. b, b. The step-like projection for the avicularium. 



c. The natural position of the avicularium when at rest. 



Fig. 2.— Front view of E. pocillum, Bk. 



Fig. 3. — Zoarium of E. cyatlms, natural size. 



Fig. 4. — Portion of zoarium of K. cyathus at the edge of the connecting 

 web. 



a, a. Descending radical tubes. 



b, b. Upper edge of the web. 



Fig. 5. — Bifurcation of a branch of B. pocillum viewed in front. 



a, a, a, a, a. Commencement of radical or connecting tubes. 



a, a, a, «, a, a. Coalesced connecting tubes. 



(All the avicularia but one have become detached.) 



Fig. 6. — Lower part of zoarium of Bttgula mirabilis, Bk. 



a, a. The corresponding ends of one of the radical tabes springing 

 from the base of the primordial zooscmtn, and dividing into its 

 terminal twigs. 



Fig. 7. — Bugula reticulata, Bk. 



a, A connecting tube terminating, as it occasionally does, in tendril- 

 like twigs. 



Fig. 8. — Bugula unicornis, Bk. Showing the usual mode of connection by 

 tendril-like twigs. 



Fig. 9. — Portion of a frond of Carbasea ovoidea, Bk. 



a. One of the abortive marginal cells, with two tubular ones arising 



from it. 



b. The growing extremity of a tubular cell filled with germinal 



sarcode. 



c. A joint representing those of an ordinary radical tube. 



d. Two zocecia arising from one, as at a. 



