NYE OG MINDRE BEKJENDTE 

 COELENTEßATEß 



beskrevne af 



M. 8AE 8 '). 



6V9 



I. OM DE NOKSKE ARTER AP AMME- 

 SLÆGTEN OORYMORPHA. 



A f denne mærkelige af mig allerede i 1835 opstillede 

 -£■*■ Hydroideslægt har jeg foruden den først opdagede 

 C. nutans S. til forskj eilige Tider iagttaget ved vore Kyster 

 endnu 3 andre Arter, hvoraf en kort Characteristik er given 

 i Christ. Vid. Selsk. Forh. f. 1859. Hertil kommer endnu 

 den af O. Schmidt ved Loppen i Finmarken iagttagne og 

 i hans „Handatlas der vergleichenden Anatomie" Jena 1854, 

 Tab. 9, fig. 2 under Benævnelsen Amdlthæa uvifera afbil- 

 dede Hydroide, som utvivlsomt er en, og som det synes, 

 ny Art af Slægten Corymorpha. Antallet af de norske 

 Arter stiger saaledes herved til ikke mindre end 5. Man 

 antog længe, at denne Slægt kun var indskrænket til de 

 nordlige Have, indtil Steenstrup i Aaret 1854 (Vidensk. 

 Meddelelser fra den naturhist. Forening i Kjøhenhavn, 1854 

 pag. 46) bekjendtgjorde en ny tropisk Art af denne Slægt 

 fra Rio Janeiro under Navnet Corymorpha Januarii Stp. 

 Foruden de anførte Arter kj ender man endnu 2 herhen 

 hørende Former, nemlig den ved de britiske Øer levende 

 Corymorpha nana Alder (Catalogue of the Zoophytes of 

 Northumberland and Durham, 1857 pag. 18) og den nord- 



*) Anmærkning. De følgende Beskrivelser over norske Coelen- 

 terater have i mange Aar ligget færdige fra min Faders Haand til 

 Indførelse i nærværende Hefte af Fauna litoralis Norvegiæ. Udgi- 

 velsen af Hæftet er imidlertid af forskj ellige Aarsager og navnlig 

 paa Grund af Lithographens Langsomhed bleven Aar efter andet 

 udsat, saa at det først nu, mange Aar efter den Tid, da det oprin- 

 delig tænktes færdigt til Trykken, er bleven muligt at faa samme 

 udgivet. Imidlertid har nu Videnskaben ogsaa i denne Branche 

 gaaet fremad med Kjæmpeskridt, og det vil derfor være saare 

 naturligt, om disse Beskrivelser ville synes Nutidens Zoologer 

 noget antiqverede; de havde ganske sikkert fremkommet under en 

 temmelig forskj ellig Form, om Udarbeidelsen havde skeet senere. 

 Jeg har dog ikke troet paa egen Haand at burde foretage nogen 

 gjennemgribende Forandring ved min Faders Manuskript, men vil 

 blot her bemærke, at man ved Bedømmelsen af denne Del maa 

 erindre, at den oprindelig stammer fra en meget tidlig Periode og 

 at der selvfølgelig ikke har kunnet tages noget Hensyn til de mange 

 nyere Arbeider, som imidlertid ere fremkomne paa dette Felt. 



G. O. Sars. 



NEW AND LITTLE KNOWN 

 CCELENTERATES 



DESCRIBED BY 



M. 8AES 1 ). 



OP THE NOBWEGXAN SPECIES OF THE 

 GENUS CORYMORPHA. 



/|F this remarkable Hydroid-genus established by me in 

 ^ 1835 I have at various times observed on our coasts, 

 besides the first discovered C. nutans, S., 3 other species 

 of which a short characteristic is given in "Christ. Vid. 

 Selsk. Forh." for 1859. To these must be added the 

 Hydroid noticed by 0. Schmidt at Loppen in Finmark, and 

 delineated in his "Handatlas der vergleichenden Anatomie," 

 Jena, 1854, Tab. 9, fig. 2. under the denomination Amal- 

 thoea uvifera which undoubtedly is a species, and apparently 

 a new species, of the genus Corymorpha. The number of 

 the Norwegian species is thus not less than 5. It was 

 for a long time supposed that the genus was limited to 

 the northern seas, until Steenstrup in the year 1854 

 (Vidensk. Meddelelser fra den naturhist. Forening i Kjøben- 

 havn, 1854, pag. 4G) made known a new tropical species 

 of this genus from Rio Janeiro under the name Cory- 

 morpha Januarii, Stp. Besides the species mentioned, 2 

 other forms belonging to the same genus are known, 

 namely the Corymorpha nana Alder, living near the British 

 Islands (Alder, Catalogue of the Zoophytes of Northumber- 



J ) Note. The following descriptions of Norwegian Cælenterates 

 were completed many years ago by my Father, with a view to 

 their being inserted in this part of Fauna litoralis Norvegiæ. The 

 publication was- however delayed from year to year by various 

 impediments, and especially by the tardy execution of the litho- 

 graphic plates; so that it has not been possible to get it brought 

 out until now, that is to say until many years after the time when, 

 according to the original estimate, it ought to have been ready for 

 the press. Meanwhile science has, in this branch also, been advan- 

 cing with giant strides ; and these descriptions may therefore very 

 naturally appear somewhat antiquated to the zoologists of the 

 present day ; certainly they would have appeared in a rather diffe- 

 rent form if they had been more recently elaborated, I have not 

 felt justified in making any essential alterations in my Father's 

 manuscript, but will here only remark, that in appreciating this part 

 of the work, we must remember that it originally dates from a 

 very early period, and that consequently it has not been possible 

 here to take any notice of the numerous more recent works which 

 in the meantime have appeared in the same field. 



G. O. Sars. 



