9) 
f] 
The present paper therefore contains only the enumeration of 
the species collected and, so far as necessary, the description of 
their most striking peculiarities. 
This list may be considered as an addition to the paper publis- 
hed by Thomas Hincks on the Polyzoa of Barents-Sea that were 
collected by Mr. Grant(!) and offered to Mr. W. D’Urban (Ann. a. 
Magaz. of Nat. History N°. 34 Oct. 1880). 
The greater part of the species described by Hincks in his list, 
are also found and noticed by me; nevertheless his results differ in 
many respects from mine. 
For my determinations I have made use chiefly of the works of 
G. Johnston (History of British Zoophytes 2nd ed. 1849) G. Busk 
(Catalogue of the Marine Polyzoa in the Brit. Mus.) F. A. Smitt 
(Bryozoa marina in regionibus arcticis et borealibus viventia 1867, 
and: Kritisk Förtecekning öfver Skandinaviens Hafs-Bryozoer) and 
Th. Hincks (a History ofthe British marine Polyzoa, 2 volumes 1880). 
It is especially the latter invaluable work of the laborious and 
able English naturalist, which has rendered me important services; 
and as this monograph is the most recent and extensive publica- 
tion on the Polyzoa, I have adopted in the following list its clas- 
sification and nomenclature. Before being able to commence my 
task, I was obliged to separate the Polyzoa from a large collection 
of other invertebrate forms, with which they were mixed. 
This preliminary work of assorting has required much time and 
has caused a considerable delay in the publication of my paper. 
FOLYZOA IV. TEHOMESON. 
Subelass I. ECTOPROCTA, Nitsche. 
Order: @ymnolaemata , Allman. 
Suborder I. CYCLOSTOMATA, Busk. 
Group I. Radicellata, d’Orbigny. 
Family 1. CRISIIDAE. 
Genus: Crisia, Lamouroux. 
l. Crisia eburnea, Linnaeus. Var, produeta Smitt. 
