OELLULAEINE AND OTHEE POLYZOA. H61 
Plate 19. 
The originals of Figs. 40-42, 51 and 52 were treated witli Eau de Javelle. 
Scale of figures as in PI. 18. 
Fig. 'iO.—Menipea triseriata (Simon's Bay, S. A-frica, ' Challeng-er/ B.M. 87.12.9.99). 
Lateral view of two zoceoia with ovicells and frontal avicularia. 
Fig-. 41. — Mempea triseriata (same slide). Basal -view, showing an internal aviculariiim 
(i.av.), a lateral avicularium {Lav.), and the origin of a marginal rootlet (»•.). 
Fig. 42. — Menipea triseriata. Frontal view of the same zooecia; f.av. frontal avicularium; 
z'.ay., internal avicularium; l.av., lateral avicularium, above which is seen the 
origin of a rootlet. 
Fig. 43. — Menipea marionensis (Simon's Bay, ' Challenger,' B.M. 87.12.9.99). Frontal view; 
cr., cryptocyst; f.av., normal frontal avicularium; i.av., base of an internal 
avicularium, showing the origin of its muscles from the frontal surface. 
Fig. 44. — Menipea marionensis (Cape of Good Hope, 'Challenger,' Stat. 142, B.M. 99.7.1.698). 
Basal view, showing two internal avicularia (i.av.), with their mandibles. 
Fig. 45. — Menipea marionensis (same slide as fig. 43). An old zocecium, showing an 
excessive development of the internal calcareous spines; cr., cryptocyst; 
p., proximal end of the next distal zocecium, connected with the edge of the 
opesia (e.) by a calcareous film ; f.av., frontal avicularium ; lav., lateral 
avicularium. 
Fig. 46. — Amastigia kirkpatricki (Lev., MSS.), n. sp. (Marion Id., ' Challenger,' B.M. 
87.12.9.97). Young zocecium, with 5 oral spines. 
Fig. 47. — Amastigia kirkpatricki (same slide). Basal view, showing vibracula, the upper- 
most axillary. 
Fig. 48. — Amastigia kirkpatricki (same slide). Frontal view, showing a gigantic frontal 
avicularium and two ovicells. 
Fig. 49. — Amastigia rudis (Victoria, B.M. 97.5.1.462). Part of a zocecium, with scutum, in 
frontal view. 
Fig, 50. — Amastigia nuda (Victoria, B.M. 97.5.1.246). A similar preparation, frontal view. 
Fig. 51. — Amastigia nuda (same slide as fig. 50). Lateral view of two zooecia, with 
frontal avicularia (paired). 
Fig. 52. — Amastigia rudis (same slide as fig. 49). A similar view of two zooecia with 
frontal avicularia. 
