152 ZOOPHYTOLOGY. 
culum spine strong and clavate, stretching upwards and outwards from the 
lower and inner lip of the cell-aperture. Connecting horny tube between 
the internodes double. Ovicell spherical, with a richly granular surface, 
imbedded among the cells, on the cavities of two of which it encroaches. 
Van Dieman’s Land; rather abundant, and in fine con- 
dition: Dr. Harvey. New Zealand; abundant; Dr. Joliffe. 
5. M. tricellata, Busk. 
3. Serupocellaria, Van Beneden. 
a,—Operculate. 
1. §&. serupea, Busk. 
Frequent on Algze and Polyzoa. 
Bass’s Strait; Dr. Harvey. New Zealand; Dr. Joliffe. 
2. 8. ornithorhyncus, n. sp. 
Cell-mouth rather small, oblique, a tuberculated crescentic plate below 
the lower lip. Upper margin fringed with four to five long spines; pedun- 
culate operculum prolonged upwards into a spine, which, with the superior 
spines, almost completes the circle round the true opening of the cell. 
Lateral avicularia very large. Vibracula small and obscure. Ovicell 
smooth. 
A delicate transparent species, frequent, in small tufts, on 
sea-weeds and Polyzoa. 
Bass’s Strait; Dr. Harvey. 
4. Canda, Lamouroux. 
l. C. arachnoides, Lamx. 
Sect. 2. Continua. 
Subsect. 1. Uniserialaria. 
4, Fam. Scrupartap#, Gray. 
1. Scruparia, Oken. 
1. §. chelata, L. 
2. Hippothoa, Lamouroux. 
l. H. Patagonica, Busk. 
3. Altea, Lamouroux. 
1. A. anguina, L. 
2. A. ligulata, Busk. 
Subsect. 2. Bi-Multiserialaria. 
5. Fam. Fanrciminarrapm, Busk. 
1. Farciminaria, Busk. 
2. F. aculeata, Busk. 
