PLATE IV. 



CTENOSTOMATA. 



Nolella (= Cylindroecium auctt.). 



(Figs i — iS and 20 were drawn with a Zeiss A Obj., Fig. 19 with a Zeiss C Obj. All the figures 

 «rere afterwards reduced ' ... The scales, in ,a, are indicated at the foot of the Plate.) 



Fig- 3 



Fig. 4. 



Fig. I. Nolella annectens n. sp. (p. 57). — 3S0. I. 1 , Stat. 47. A young and much elongated zooecium. 

 Fig. 2. „ „ „ » » i) Growing end of a branch. The dilated part 



represents the commencement of a zooecium, 

 and already shows a young polypide-bud. 

 „ v „ „ „ v Zooecium with long peristome. The retracted 



collar is seen in the vestibule. 

 v r „ r „ „ Zooecium with shorter peristome, showing 



the polypide, the retracted collar and the 

 muscles. 

 v v „ r „ A similar specimen, in side view. 



r v „ r „ „ A zooecium with shorter peristome, showing 



the retracted collar. 

 A similar zooecium in side view. 



T) ïï Tï V V 77 



„ „ T v r „ A zooecium with very short peristome, in 



side view. 

 B „ „ „ „ B Distal end of a zooecium with protruded collar. 



Nolella papuensis Busk (p. 53). — 337. G. 2 , Stat. 71. Zooecium with regenerated distal end, in 



which are seen two embryos. An egg occurs 

 close to the distal end of the old part. 

 „ „ , T v v Part of a similar zooecium, containing distally 



an embryo and, near the proximal end ot 

 the regenerated part, one or two eggs. The 

 outline is irregular in this region, indicating 

 that Iarvae have probably escaped here. 

 r „ „ r v v Distal end of a zooecium with three embryos. 



„ v n v „ v Proximal end of a zooecium, showing 



branches. 

 Stat. 164. Young zooecium, with branches. 

 Stat. 250. A long and slender zooecium. 

 Stat. 164. An elongated zooecium. 

 • 337. G. 2 , Stat. 71. A similar zooecium, showing, near the middle 

 of its length, two embryos which appear 

 to be about to escape. 

 r „ , An old and much shortened zooecium. 



- 108. P. Stat. 144. A zooecium, more highly magnified, showing 

 several rounded bodies, possibly eggs, in 

 the vestibule. 

 „ „ „ Several zooecia, from the same slide, magnified 



to the same extent as figs 1 — 18. 



Fis. 11. 



hig. 12. 

 Fig. 13- 



Fig. 14. 



Fig. 15. 



Fig. 16. 



Fig. 17. 



130. H. 3 

 276. A., 

 130. H. 3 



Fig. 

 Fig. 



18. 

 19. 



(? sp.). 



Fig. 20. 



