21 



Denne Art, saavel som L. jiiirjiiirea. er afbildet at' 

 Prof. G. O. Savf! under Nordh.-Exp., og fra disse hans 

 Tegninger maa enkelte Træk af Diagnoserne hentes, da de 

 ophevarede Exemplarer er i en temmelig daarlig Forfat- 

 ning. Paa VW Tegning af on Blastostyl hos L. sarsii, ser 

 man. at Æggene, der forlader Gonoforerne paa et meget 

 tidhgt Stadium af sin Udvikling, forbliver en Tid fæstede 

 til disses Munding 



Findested. St. 248. 



Lampra atlantica, n. sp. 



(Pl. II, Fis. 4). 

 Foreløbig Beskrivelse, Bomievio ('i'.)). 



Trophosome. Hydrocaulus ca. 8 cm. lang, næsten 

 jevn tyk i hele sin Længde, ca. 3 mm. i Diameter, purpur- 

 farvet med morke Længdestril)er. Jevn Overgang til Hy- 

 drantiien, som har ca. 10 proximale Tentakler, 1 — 2 cm. 

 lange, og distale Tentakler i flere tætstillede Kredse. Ca. 

 10 Blastostyler, 4 — 6 mm. lange og med tydeligt Hulrum, 

 staar i en Kreds indenfor de pro.ximale Tentakler. 



Gonosome. Fastsiddende pseudoniedusoide Gonoforer, 

 uden Tentakel; flere Æg udvikles i hver. 



Denne Art har, som man vil se af Diagnosen, stor 

 Lighed med L. sarsii; men de adskillos ved Gonoforernes 

 Bygning, idet disse lios L. afJaid/ai er aldeles glatte, 

 medens de lios L. sarsii har en Tentakel, som af og til 

 kan naa en betydelig Udvikling. 



Mine Undersøgelser over Slægten Laiiipras eiendomme- 

 lige Gonoforer og disses. Anlæg er gjort ved Snitserier 

 gjennem Blastostyler af denne Art, og Fig. 4, a— c, illu- 

 strerer, hvad der tidligere er udtalt herom. 



Findested. St. 40. 



Lampra purpurea, n. sp. 

 (Pl. iir, Fig. 1). 



Forelobig Beskrivelse, Bonnevie (2!)). 



Trophosome. Hydrocaulus ca. 10 cm. lang, noget 

 fortykkede i den proximale Ende. purpurfiirvet med niorke 

 Længdestriber. Jevn Overgang til Hydrantlien, der bærer 

 ca. 30 proximale Tentakler, 3—4 cm. lange, og distale 

 Tentakler i to vel adskilte Kredse. Blastostyler. ca. 10, 

 3 — 4 cm. lange, meget tynde. 



Gonosome. Fastsiddende pseudoniedusoide Gonoforer, 

 der sidder meget tæt paa de lange Blastostyler, uden nogen 

 Tentakel. Flere Æg udvikles i liver Gonofor. 



This species, as also L. purpurea, lias l)een drawn 

 by Prof. G. 0. Sårs during the N. Atlan. Exp. As the 

 spccimens presei-ved are in a rather imperfect condition, 

 a few particulars in the definition must be tåken from his 

 drawings. In tlie drawing of a bhistostyle of L. sarsii, it 

 will be seen that the eggs, which leave tlie gonopiun-es at 

 a very early stage ot their development, remain for a time 

 attached to tiie nionth of the gonopliores. 



Locality. Station 248 



Lampra atlantica, n. sp. 



(Pl. II, fifj. -I). 



Prcliminary doscription, Bonnevie (-'J). 



Trophosome. Hydrocaulus about 8 cm. in length, 

 of an almost even thickness tlirougiiout, aliout 3 mm. in 

 diameter; colour purple witli dark longitudinal stripes. 

 Gradual transition to tlie hydranth which lias about 10 

 proximal tentacles from 1 to 2 cm. long, and distal ten- 

 tacles in several circles standing close together. About 

 10 blastostyles, from 4 to 6 mm. in length, and with a 

 distinct cavity, stand in a ring witliiu the circle of proxi- 

 mal tentacles. 



Gonosome. Fixed pseudo-medusoid gonophores, with- 

 out tentacles; several eggs are developed in each gonophore. 



Tliis species, as tlie definition shows, bears a great 

 resemblance to L. sarsii, but tliey are distinguished from 

 one anotlier by the structufe of the gonophores, tliese 

 being quite smootii in L. atlantica, vvhile in L. sarsii they 

 have one tentacle, which sometimes attains a considerable 

 degree of development. 



My examination of the peculiar gonopliores of the 

 genus Lampra. and their rudimentary stage, was made by 

 nieans of sections of blastostyles of this species; and fig. 

 4_ a — c, illustrates wliat has been previously stated about 

 them. 



Locality. Station 40. 



Lampra purpurea. n. sp. 



(Pl. III, fig. I). 

 Preliminary description, Bonnevie (29). 



Trophosome. Hydrocaulus about 10 cm. in length, 

 somewhat tliickened at its proximal end; colour purple, 

 with dark longitudinal stripes. Gradual transition to the 

 hydranth, which carries about 30 proximal tentacles, 3 — 4 

 cm. in length, and distal tentacles in two clearly-defined 

 circles. About 10 blastostyles, 3 — 4 cm. in length, and 

 very thin. 



Gonosome. Fixed pseudo-medusoid gonophores, stan- 

 ding very close together on the long blastostyles, without 

 tentacles. Several eggs are developed in each gonophore. 



