17 



The Porsanger Fiord, 200 in., on a stoiir. 



S-MiTT (1. c, p. 751 call.s attention to tlir fact that the octocy.st 

 in zooocia and ooefia arc tiiinnci- than in the i'oreuoiiiL' I'oini. 



In (irrtlni there are in the ooecia often tiansvei'se and loniri- 

 tndinal lines or sutnrcs. the.se too are mentioned by .S.\utt (1. e., 

 \\. 74. pi. 24, tit;-. 331. Smitt also says that tliesc lines .sometimes 

 oeenr in the ooecia of wKJuscida. bnt I have not noticed them. 



It is ea.sy to disting-nish between the two species. With regard 

 to size, it may be mentioned that tlie zooezia in arctka are 0.8 mm. 

 in length from the lower end to tlie tip of the oral denticle, and 

 tiie corresponding measurement in luajuxcitkt gives 0..5— O.u mm. 

 Ooecia in ardicn are rather oval, in mdjiixciila they are approxim- 

 ately ballshaped, in both species they are punctured like a thimble, 

 bnt this is coarser in niajuscula than in the other species. 



The perforation in the frontal wall of the zooecia of majuscula 

 is closer than in arrtica. where it is. indeed, somewhat ditferent. 

 HiNiKs (I. c. pi. 14. tiLi'. 2) lias illustrated the oral denticle as 

 beiiii;- pointed, and 1 found some of them of this shape in the colony 

 which I liatl under examination. 



( )perculuin in ardicu. I have not yet succeeded in isolating, in 

 mdJKsciilit. ou the other hand, it has a characteristic form, which 

 also differs from the usual one in the genus Smittina (fig. 37). 



A very evident difference bet^\-een to two species is that the 

 zooecia in majuscula are plainly separated, \\hile in ardica they 

 more evenly merge into each other. 



This species is most likely exclusively arctic. In addition to 

 the Porsanger Fiord, in Finmark, the following findingplaces are 

 mentioned, Spitzbergen, (Smitt), St. Lowrenee (Hixcks). 



Smitthia smitti. Kirchexpauee. 



PI. IV, fiK. 24. 



The Ogs Fiord I. 100 in. 



In „Bryozoen des westlichen Norwegens". I used a new name 

 for this form, Smittia leroiseni. as Kirchexpauer's name for Smitt's 

 Escharella Jegentilii, forma proiotijim had quite slipped out of my 

 memory, notwithstanding that I made a note of it several years ago. 

 NoRMAx') here too made the necessary correction. I beg reference 

 to NoRsiAx's list of synonyms, at the same time remarking that 

 Srhizoporella Hanmworthi, Waters, ought to be excluded fi-om it, 

 in accordance with what I have previously pointed aut, that this 

 must be = Scluzoporella reimiluto-[iundata. Hixcks. 



Each zooecium has 6—8 lateral rosette-plates. As far as I 

 could see, the two upper ones were bi-pored aud the two next oues 

 tri-pored. 



This species has not previously been found in Norway. 



Smittina jeff'rensi, Normax.-) 



The Porsanger Fiord, 70 m. 



The species was not previously found iu Norway. 



BhamphosfomeUa srnhm. (Fabk.). S.mitt. 



(PI. v. ti<;s. 8—11). 



1867. CeUepora scahra, Smitt (part.). Krit. fiiiteckn., p. 30, pi. 



28, figs. 183—185. 

 1886. Rhamphostomella scahra. Lorexz, Bryozoen von Jan Mayen, 



p. 93. 



') Finmark Polj'zoa, p. 12.3. 



3) Refer to synonym^ in ,.Finiiiar]i Polyzoa". p. 120. 



Disjcnnulen. on st(nie. 15(i in.: The .lokel Fiord 1. lu(t m.; 

 The Porsanirer Fiord. 7i) in. 



LuHKNz (li\ii|cd Smitts ( cUoiiurn Kcabra \n{Q two species, and 

 as for as I can jniigc this division is perfectly Justifiable. The 

 ditt'erence between them may be characterized as follows. 



7i'. rostata has an oral denticle (pi. V, fig. 22) but in xcatmi it 

 is wanting. In costufn the avicniarian mandible is about half as 

 long as it is wide, while in .«nhi-a the heiLdit is only very little 

 more than the width. 



The ooecia in rustata have usually more pores than those of 

 sndira have (cfr. figs. 9, 21). The rostrum in the latter .species is 

 shorter and blunter than in the former one. It is generally the 

 case too that the radial lines in costata are continued on the ro.strinn. 

 but this is not often so in the case of .scahra. Both species are 

 punctured on the basal wall of the zooecium ifig. lu) but more 

 closely iu scahra than in costata. 



BidexkapM has found /.'//. st,il,ra in the Lyn-cn Fiord. So 

 that the species is now known from the coast id' l''ininaik to 

 Lofoten. 



UhamjiJtostomella costata. Lorexz. 

 (PI. V. figs. 21, 22). 



1867. CeUcjioru scahra. Smitt (part). Krit. fiirteckn., pai^-. :U\. 



pi. 2s, tig.s. ISO — iss. 

 IScSG. Bhamphostomella costata, Lorexz, Bryozoen vou Jan ilayen. 



p. 12 (94), pi. 7, fig. 11. 

 ls92. JihamplwstomeUa costata, Hixcks, Polyzoa of St. Lawrence. 

 Ann. and Mag. Nat. Hist., ser. 0. vol. 3. p. 426. pi. 21. 

 figs. 6—8. 

 1900. Rhamphostomella cosfatn. Waters, Bryozoa from Franz 

 Josef Land. p. '.il. pi. ll. fios. 26. 27. 

 Tromsø, Mehavn (1894). 



Normax has taken this ibnii in the \'aranger Fiord, and 

 BiDEXKAP in Lyngen. The hitherto known southern limit for this 

 species is Tromsø. 



RlaovjihostoweUa plicata, Smitt. 



(Pl. v, lig-.s. 14, 15.) 



1S67. Cellcpora scahra. forma plicata. S.mitt, Krit. fiirt.. p. 30. 



pi. 28, figs. 189, 191, 195. 

 1S77. Cdlipora plicata. Hixcks, Polyzoa from Iceland and 



Labrador. Ann. and Mag. Nat. Hist., ser. 4, vol. 19, p. 



100. pi. 11, figs. 3, 4. 

 1886. Rhamphostomella plicata. Lorexz, Bryozoen von .Ian Mayen, 



p. 12 (94). 

 1900. Rluuriphostomclht plicata. Waters, Bryozoa from F. J. L., 



p. 92. pi. 11. figs. 28. 29. 



Nordkyn (18941, on an annelid tube. 



As is the case with costata. this species too has an oral den- 

 ticle, which is, however, longer aud narrower than in the species 

 mentioned. 



The ooecium is as a rule provided with a few pores. I was 

 not able to discover any punctures on the back side of the colony. 

 It is therefore probable that Smitts fig. 190 does not represent 

 this species. 



1) Lyngenfjordens evertehral fauna. Tromsø Mus. Aarb. 20, 1897, p. 92. 



