Bottom-Life. 



Mciiihmnipora Vincaia, Lin. 

 llanuiiorfest (1S1)4). 



Moiiliranipora arctica, D'Okhic.ny. 

 Kvu'imnyeri, on alg^ac; The Nortli Cape (1894); Nordkyn (1894). 



Mc»il»(i)iipurft crdticulit, Aldeh. 

 On an ascidian near Hammerfest (1894); The Lakse Fiord 

 (collected by Spakkk Schneider). 



Mcmhran'tpora ri/mlKicfoiDiis, IIincks. 

 The North Cape (1894) on alirae. 



Memhnmqmm infuluim. S. Wnon. 

 The Ostnes Fiord. 50 — 70 in.; Ditiormiilen, 100—150 m.; 

 Stoncsbotn. 40— 8n m.: The Jokel Fiord III, 100 m.; Hammerfest 

 (1894). 



MrnihriDi'iiHim mlnu.r. Brsic. 



I'l. Ill, fiu-. II). 



Rost n, 150 m.. on Wahllicimid : Mosken.strømmen II, 150 m., 

 on Wahlheiniia : Digermnlen. 100— loi» m., on stone; Malangen, 

 1011 — 200 m.. on WdhJIieimia. 



Lepralia (Menihraniporella) nitida, .Johnston.') 

 Rost II, 150 m.; Nordkyn (1894). 



Gcphyrotes (CrihnTum) nifido-p/mcfata, Smitt. 

 Moskenstrommen II, 150 m.; Nordkyn (1894). Loven had 

 specimens from Hammerfest. 



Crihrilina c-ryptooecium, Noeman.-) 

 The K.jolle Fiord (1894); Nordkyn (1894). 



Crihrilina aiiuulata. Fabk. 

 The North Cape (1894). 



Microporella ciliata. Pallas. 

 Svolvær (1894), Sværholt (1894). 



Microporella impressu, Audouin. 

 Inuohavet. 300 m., on stones; Breisund, 100 m.. on stones. 



I)or//iiorclla^) spatulifera, Smitt. 

 Breisund, loo m.. on Ehijnchonella psittaæa. An excellent 

 illustration of tlie zooecia in this peculiar species, will be found 

 in ^^'Al•E^!s (liryozoa from Franz-Josef Land- Journ. Linn. Soc, 

 XXVIII, pl. 12. titr. 0). 



Harnieria*) xcutulaia. Busk. 

 Nordkyn (1894), on stones. 



TegMroiloma tjracile. M. Saks. 

 M(ntsund III, 100 m.; Digermulen, 100—150 ni.; The Sa,<? 

 Fiord, 200 m., on dead bi'anches of Mdella hippuris: Tranodybet, 



607-640 

 100—200 



on dead branches 

 luyohavet, 300 m. 



)f Isidcllu liippurif: Malans/en, 



1) Cfr. Norman, Finnmrk Polyzoa, p. 100. 



2) Notes on the Natural History of East Finmark. Aun. Mag. Nat. Hist., 

 .Ser. 7, Vol. XII, p. 102. 



3) Norman, Finmark Polyzoa. p. lOH. 

 ■•) NOR.MAN, Finmark Polyzoa. p. 107, 



Farina tubitlosa, Nousian. 

 Hammerfest (1894); The Lakse Fiord (collected by Sparhe- 

 Schneidek). 



Hipjjotlioa lii/aliiia, Lin. 

 Groto. <•>— 24 m., on akae; The Trokl Fiord Sund, 30— 40 m., 

 on alyae; Breisund, 100 m.. on an a.^cidian. This species has some- 

 times been mentioned as a Sclii-oporella. sometimes as a Celleporella. 



HijilKitlind (liraricata. LAMoritor.x. 

 Tromso (collected iiy Schneideu); The Lakse Fiord (collected 

 by Schneider). 



Sclii-oporella ahlcri, Busk. 

 Moskenstrommen, 90 m., on stones; The Ostnes Fiord, SO- 

 TO m.; Hammerfest (1894); Ingohavet, 300 ra.; Sværholt (1894). 



Schizoporclla s-iiiuosa, BrsK. 



PI. Ill, flgs, 9. 10, 



iloskenstrommen, 90 m., on stones and Waldheimia; The 

 Ostnes Fiord, 50—70 m., on stones and coal; Digermulen, 100— 

 150 m., on stones; Malangen, 100 — 200 m., on Modiola modiolus. 

 Operculum (cfr. fig. 10) presents a divergent appearance from the 

 genus Schi.:oporcJld. and the species sinuosa ought indeed to be 

 removed. 



Schizoporclla linearis. Hassall. 

 PI, V, fig, 26, 



Moskenstrommen, 90 m., on shells. 



Schizoporella n)iicor)ii.s. .Iohnston. 

 PI. V, figs. 23—20, 27. 



„Glea" (Rost), on the beach. 



The specimens from Røst differ somewhat from those I have 

 collected in the Hjelte Fiord, near Bergen, but the variations are 

 not so great as to make a new species necessary. Besides tig. 23 

 agrees well with Hincks' figures in Brit. Mar. Pol. 



On comparing opereula') of Schizoporella aiiicornis from the 

 Hjelte Fiord and from Røst, it Avas found that those from the 

 latter place were somewhat larger. (Cfr. tigs. 24, 27). The 

 zooecia in the specimens from Røst also had a rather wider sinus 

 on the proximal edge of the oral aperture. The species has a 

 \\-ide distribution and probably varies very considerably. Lofoten 

 is up to the present the northern known limit, both for unicornis 

 and linearis. 



Schitoporclla Candida. Smitt. 



Pl, IV tigs (>, 7. 

 Mollia rutf/aris. forma Candida. Smitt. Ofvers. Kgl. Vet. 

 Akad. Forh. 18G7 (Bihaiig) pp. 1C>. 107. pi. 25, fig. 83. 



1) It is practical to measure the maximum breailth (Ij, pl. V, figs. 26, 27) and 

 the ma.ximum height (h), when comparing opercula. These measurements may 

 also be found useful in determining species, for, not taking their absolute value 

 into account, in some species b wU be larger than h (b ^- h), in others they 

 will be equal in size (b = h) and in others less (b < h). It is also somethnes 

 useful to take similar measurements of the ma.xinium breadth and height of the 

 mandibles. 



