NOTES ON A PECULIAR FORM OF POLYZOA, 3 
ocecium is sub-globular and affixed to the upper and outer 
border of the zocecium, arching, as it were, over the 
aperture.” 
The anterior muscle above mentioned is described as lying 
between a fine exterior membrane and the proper ectocyst. 
This membrane, again, is said to pass down from one 
zocecium to another, and as connecting the branches together, 
being finally continued into the stem. 
Amongst other particulars, the authors state that the ovary 
is attached to the endocyst on the upper and anterior part 
of the surface of the zocecium, consisting of an agglomeration 
of cells wherein the ova are developed. The testis, on the 
other hand, they state, is situated at the bottom of the 
zoccium, and is formed of similar cells to those forming the 
ovary, but filled with spermatozoa. 
Kinetoskias, therefore, is regarded by them as a complete 
hermaphrodite. 
The incurvation of the branches of the zoartwm towards 
their termination is ascribed to the action of the anterior 
muscles above noticed. There is, they observe, no common 
colonial muscular system. 
2. Kinetoskias arborescens is described as having a 
flexible zoarium, supported on a very short stem, from 
which radiate four large main branches which sub-divide 
dichotomously. The zoccia, which are biserial and alternate, 
are 0°58 mm. long by 0°31 broad above, and 0°18 mm. 
below. They are of a narrow form, and nearly pointed 
below, especially when viewed from behind ; above they are 
broad and rounded, the upper border being oblique in a 
direction from within upwards and outwards, so that the 
upper and inner angle is rounded off, and the outer rendered 
more acute ; there is no spine on this angle. From the 
middle of the upper convex border of the zocecium nearer the 
anterior margin is a strong, horny, obtuse conical process 
or apophysis, which is said to give attachment to a muscle, 
which, as in A. Smittiz, is described as spreading out over 
the anterior surface of the superjacent zocecium. 
The anterior surface is said to be covered with scattered 
calcareous granules, and the posterior surface, which is very 
convex, is strongly striated transversely. The striz or 
ruge are elevated and oblique from below upwards and 
inwards. 
The avicularia are placed on the upper and outer angle 
of the zoecia. They have the form of an eagle’s head, and 
are supported on a short articulated stem. No occia were 
observed, 
