95 



Gonangicrne udgaar. som ovenfor nævnt, enten fra 

 Ilydroeladierncs første Led ved Basis af dettes Hydrothek, 

 der ligesom de ovrige Hydrotheker er omgivet af tre Ne- 

 matopliorer, eller fra særskilte Grene, der udgaar fra sainme 

 Sted. Disse Grene er af omtrent samme Læugde som 

 Hydroeladierne; de er meget ioinefaldende, da deres Ret- 

 ning er en anden end Hydroeladiernes, idet de danner en 

 næsten ret Vinkel med Hovedstammens Længderetning. 

 De har som Regel først endel Internodier, der kun hærer 

 Nematophorer, og i deres distalc Del udsendes et Par al- 

 terneret stillede, korte Grene, der bærer Hydrotheker af 

 samme Bygning som de almindelige Hydrocladiers. Ved 

 Basis af første Hydrothek paa disse smaa Grene fiiules da 

 Gonangiorne fæstet ved en kort Stilk, med 2 — 3 Ringe. 



Findested. St. 313. 



Aglaophenia formosa, AUm.* 



Trophosome. Kolonien ijærformet, oftest ugrenet: 

 Hydrocaulus sammensat, ndgaar fra en Hydrorhi/.a, dannet 

 af fint forgrenede Ror. Hydrocladier alternerende. Hy- 

 drotheker næsten cylindriske, regelmæssig tandede i Kanten. 

 Laterale Neraatophorer rager neppe over Hydi-othekernes 

 Rand. mediane naar til ca. ^/s af deres Hoide; den sidste 

 er ved et Septum delt i en proximal og en distal Del. 



Gonosome. Gonangier kegleformige med cirkelrund 

 Aaljning i distale Ende, bæres i Vinklerne af dichotomisk 

 forgrenede Phylactocarjjer, der udgaar fra Basis af Hydro- 

 eladiernes første Hydrothek. som mangler median Nema- 

 tophor. 



Denne Art, som efter Alhiiiins Beskrivelse kan naa 

 en Hoide af 10 cm., er i Nordli. -Exp.s ilateriale repre- 

 senteret ved et lidet Exemplar. 3 — -t cm. hoit. Den er 

 let at kjende paa de ensartede Tænder, der findes langs 

 hele Hydrothekranden, og ligesaa ved de dichotomisk for- 

 grenede Phylactocarper, der — i Modsætning til de samme 

 hos A. co)iq)ressa — danner en A'inkel med Hovedstammen, 

 der er mindre end Hydroeladiernes. 



Pindested. St. 357. 



The gonangia, as mentioned above. issue either from 

 the first joint of the hy(hdcla(Hum, at the Ijase of its hy- 

 drotheca, which, like the otiicr liydrnthecæ. is surrouuded 

 by three nematophores, or from separate branches, issuing 

 from tiie same spot. These branches ai-e of about the 

 same length as the hydrocladia, and are very conspicuous. 

 owing to the fact that they grow in a difterent direction 

 to that of the hydrocladia. and are at almost right angles 

 to tile longitudinal direction of the main stem. They have 

 first, as a rule, soiiu' iiiteriiodos which (iiily bear nemato- 

 phores, and on their (Hstal part grow a paii' of alternately 

 placed sliort branches. beariiig hydrothecæ of the same 

 structure as those of the ordinary hydrocladia. At the base 

 of the first hydrotheca on these small branciies, the gonangia 

 are fonnd attached by a sliort stalk ^vith 2 or 3 rings. 



Locality. Station 313. 



Aglaophenia formosa. AUm.- 



Tropbosome. Ooloiiy pinuate. generally unramified. 

 hydrocaulus compound, growing from a hydrorhiza formed 

 of finely ramified tubes. Hydrocladia alternating. Hydro- 

 thecæ almost cylindrical, regularly dentated rouiid the 

 margin. Lateral nematophores scarcely project beyond the 

 margin of tlie hydrothecæ. median attaiiiing about V-, tlieir 

 heiglit; the last is divided by a septum into a proxinial 

 and a distal part. 



Gonosome. Gonangia conical. with circular opening 

 at tiie distal end, stand in the angles of dichotomously 

 ramified phylactocarps, issuing from the liase of the liydro- 

 cladia's fir.st hydrotheca, which has no median nematophore. 



This species. which, according to AlJmctn, may attain 

 a lieight of 10 cm., is represented in' the N. Atlaii. Exp. 

 coUection liy a small specimen. between 3 and 4 cm. high. 

 Tt is easily recognisable by the uniform denticles that are 

 found all along the margin of the hydrotheca, and also Ijy 

 tiie dichotomously branched piiylactocarps, which. unlike 

 those in ^4. compressa, make an angle with the main stem. 

 which is less than that of the hydiocladia. 



Locality. Station 357. 



Aglaophenia myriophyllum, Lin 



Trophosome. Kolonien fjicrformet, oftest ugrenet; 

 Hydrocaulus sammensat, udgaar fra en Hydrorhiza, dannet 

 af fint forgrenede Tuber, bærer alternerende Hydrocladier. 

 Hydrotheker cylindriske; deres Kant er svagt bugtet og 

 har midt foran en bredt afskaaren Tand. Laterale Nema- 

 tophorer rækker lidt ovenfor Hydrothekernes Rand, mediane 

 ikke fuldt til deres halve Hoide. 



lUustratioiienie til denne Avt er ved en Feiltagelse trykt under 

 Afhaudliugen ,,Keuc norwegische Hydroideir- i Bergens Blus. 

 Aarb. 1898., 



Aglaophenia myriophyllum, Lin 



Trophosome. Colony pinnate, generally umbrauclied; 

 hydrocaulus compound, growing out of a hydrorhiza, for- 

 med of finely ramified tubes, and bearing alternating hy- 

 drocladia. Hydrotheca^ cylindrical, their edge is slightly 

 curved, and has a broadly truncated denticle in the middle 

 of the front. Lateral nematophores reach a little beyond 

 the edge of the hydrothecæ. the median ones not quite to 

 half their lieight. 



The drawings of this speeies have. liy an error. beeu printed in 

 the paper, ,.Neue norwegische Hydroideir- in the Year-book nf 

 the Bergen Museum, 1898, 



