448 Rev. Canon Norman—A Jlonth on 
side, which we none of us recognized as such, its character 
being so entirely different from any previously known 
form of that organ. Alder represented on fig. 6 certain 
organs on the back of these zocecia, which apparently I could 
not see, as I did not describe them. These, I take it, 
were the central avicularia appearing through by  trans- 
mitted light, and their position rather altered by refraction. 
Lastly, the very small imperfect lateral avicularia, which I 
had mistaken for broken spines, Hincks rightly recognized 
as avicularia. 
2. Kinekoskias Smitti, Danielssen. (Pl. XLX. figs. 2-5.) 
1867. Kinekoskias Smitt?, Danielssen, Férhandl. Vidensk.-Selsk. Chris- 
tiania, 1867, p. 23 (quoted from Dan. & Kor.). 
1868. Bugula Smittt (Kinekoskias, Dan.), M. Sars, Forsatte Bemeerk. 
over dyriske Livs Udbred.i Havets Dybder (Vidensk.-Selsk. Forhand. 
1868), p. 255 (name only). 
1877. Kinekoskias Smit, Dan. & Koren, Fauna Littor. Norvegire, 
3die Hefte, p. 104, pl. iu. figs. 12-44, pl. xii. figs, 4-8, 
I had the satisfaction of procuring several perfect examples 
of this rare and remarkable Polyzoon in about 70 fathoms at 
Rédberg. I was previously indebted to Dr, Danielssen for 
the head of a specimen of the species he had described, but 
had not seen the perfect form until I went to Trondhjem. 
Other known localities for this species are Stotholmen 
Fiord, Nordland, 80 fathoms (Danielssen), Kors Fiord, en- 
trance to Bergen Fiord, 150-200 fathoms (Danielssen and 
Koren), 800 fathoms, no locality (AZ. Sars). 
Among the Polyzoa of the ‘ Challenger’ Expedition two 
species attracted great attention— Cephalodiscus dodecalophus, 
M‘Intosh,and one which Wyville-Thomson described as Naresta 
cyathus, and which Busk afterwards found to be so closely allied 
to Kinekoskias Smittd that he had some doubt whether it was 
distinct or not. It will be well therefore to clear up this 
matter, and I am indebted to the British Museum for a small 
fragment of the type of 'Thomson’s species which enables me 
to make direct comparison. I shall take it for granted that 
the descriptions already given of the two species have been 
consulted, and shall only draw attention to points of differ- 
ence or corrections of errors. 
A. Kinekoskias Smittt?, Dan. (Pl. XIX. figs. 2-5.) 
The total height is 44 inches; of this the first three quarters 
of an inch is composed of the dense mass of fine rootlets which 
are distributed through the mud and hold the zoarium in its 
position ; the next three inches are the stem, which is about 
