POLYZOA 195 
GENUS Hucratea 
E. chelata. A small, delicate species rising from a creeping stem. 
It has branches composed of single rows of horn-shaped cells having an 
oblique aperture on the side. Found at extreme low-water mark on 
hydroids, shells, stones, and Fucus. (Plate XLIX.) 
GENUS Cellularia 
C. ternata. Zoarium filamentous, spreading, about one inch high, 
white, calcareous, branched in a forking manner; cells long, narrowest 
at base, arranged in series of three and on the same plane, apertures 
oblique and facing one way; horny joint between each cluster of cells. 
This species grows in deep water from Cape Cod northward, and is found 
on objects washed upon the beach. (Plate XLIX.) 
Genus Caberea 
C. Ellisii. Zoarium erect, with fibrous base, leaf-like, branches in a 
forking manner; branches straight, stiff, narrow, spreading; cells ar- 
ranged in rows of three, adherent throughout; long bristles emanate 
from near base of many cells; egg-capsules globular, smooth, pearly. 
Common from Cape Cod northward in deep water. (Plate L.) 
Gxenus Bugula 
B. turrita. This is a very abundant species, found everywhere along 
the coast from Maine to North Carolina. Large quantities of it are 
2 3 
1, Bugula turrita, enlarged ; 2, the same, a branchlet, highly magnified ; 
3, the same, a branchlet, bearing ovicells. 
