450 Rev. Canon Norman—A Month on 
falls back, forming here,as Busk says, “a sort of step;”’ from 
this point it arches very gently forward, terminating in a spine- 
point; this spine-point is rather larger than in the last species 
and extends beyond the anterior margin of the zocecium ; 
viewed laterally (fig. 8) it is seen that the back of the zocecium 
is very convex, the form being spoon-shaped and reminding 
one of that of the cell in Mollia patellaria, Moll*. The 
avicularium (fig. 7) is much shorter and stouter than in 
the last species, and is attached behind the middle of the 
zocecium to the “ step” described; when directed forwards 
it does not nearly reach the end of the lateral margin. 
Thus both in form of zocecium and avicularium this species 
is quite distinct from K. Smittz. 
The figures of the avicularia in the ‘ Challenger’ Report 
are very inexact. ‘They are represented as mounted on a 
pedicel, and in some instances an articulation is drawn at the 
summit of the pedicel. There is nothing of this. The avicu- 
larium itself tapers downwards to a very small point, which 
point is the attachment to the zocecium. 
I do not see in my specimens of K. Smitti that the “ lower 
narrower part of the posterior surface” is “ transversely 
striated,” as described by Danielssen and Koren, and referred 
to by Busk as perhaps of specific importance to distinguish 
that species from A’. cyathus. 
An interesting point in Kinekoskias is the development of 
the mass of root-fibres by which the species anchor themselves 
in the mud. Observations on this subject will be found in 
Busk’s paper in Quart. Journ. Micr. Sci. I do not remember 
any other Polyzoa which have rootlets of this character, though 
different species have very varied modes of attachment. But 
it is an interesting fact that among many classes of mud- 
inhabiting animals similar modes of anchoring are found. 
The throwing out of a bundle of fibrous processes which, 
permeating through the fine mud in all directions, act in the 
way of roots to support the animal in an upright position, 
occurs not only in Kinekoskias among the Polyzoa, but also 
among the Echinodermata in Rhzzocrinus lofotensis, M. Sars, 
among the Hydrozoa in Aglaophenia radicellata, G. O. Sars, 
and among the Spongozoa in many species, preeminently in 
Stylocordyla borealis, Lovén, and WS. stipitata, Carter. 
* Why is Diachoris, Busk, 1851, used for this genus instead of Mollia, 
Lamouroux, 1816? The fact that the name has been misapplied by some 
authors is no reason why it should not be rightly used, and Lschara patel- 
laria, Moll, is the type of Lamouroux’s genus. 
