CTRNOI'HORA. 



83 



Will. Lundbeck. — On the "Daiiniaik" Expedition it was observed in September 1907 at the 

 "Skibshavn" (76°47'N., i8°26'W.) in considerable nnmbers and in different sizes. 



This species is distribnted over the whole of the Northern Atlantic, from Spitzbergen and 

 Greenland down along the American Coast to the Gnlf of Georgia, at least, and on the European 

 side to the Danish and British Seas, and most probably to the Mediterranean. From the Bering-Strait 

 it is known through Mertens, so that it is evidently circumpolar. Regarding its vertical distribution 

 Damas & Koefoed (Op. cit. p. 415) state that it goes beyond a depth of 200'". 



5. Beroe CUCUmis Fabricius. 



Bcroe aic/iiii/s. O. Fabricius. F'auna groenlandica. 1780. p. 361. 



— — f O. Fabr. M. Sars. Beskrivelser og lagttagelser . . . 1835. p. 30. PI. 6. Fig. 15 a— d. 

 Idyia roseola. L. Agassiz. Contributions Nat. Hist. U.S. America. II. i860, p. 270— 288. PL I— II. 



— — Agass. A. Agassiz. North American Acalephae. 111. Cat. ;\Ius. Comp. Zool. II. 1865. p. 36. 

 f — cyathina A. Agass. — Ibidem, p. 38. 



? Idyopsis Clarkii KgdiSS. -— Ibidem, p. 39. 



Beroe ovaia 'Eschsch. Chun. Ctenophoren d. Golfes v. Neapel. 1880. p. 308. Taf. XIV. Figs. 1 — 2. 



— cucumis Fabr. — Ctenophoren d. Plankton-Expedition. 1898. p. 26. 



— ovata Bosc. — Ibid. p. 26. 



— cucumis Fabr. Vanhoffen. Die gronlandischen Ctenophoren. Bibl. Zool. VIII. H. 20. 1895. p. 20. 



— — — — Ctenophoren. Nordi&ches Plankton. 1903. XI. p. 7. 



— — — Romer. Die Ctenophoren. Fauna Arctica. III. 1903. p. 81. 



— ovata Bosc. — Ibidem, p. 84. 



— — Eschscii. Mo sen Die Ctenophoren d. Siboga-Expedition. 1903. p. 20. 



— cucuviis Fabr. — Ibidem, p. 21. 



— ovaia Bosc. — Japanische Ctenophoren. 1908. p. 22. 



— cucumis Fabr. — Ibidem, p. 23. 



— — — — J^tenophores de la Bale d'Amboine. Rev. Suisse de Zool. 16. 1908. p. 10. 



— — — — Ctenophoren d. deutschen Siidpolar-Exped. 1909. p. 154. 

 f — C7ff;-/7 L. Agass. — Ibidem, p. 157. Taf. XXI. Fig. 16— 17. 



The question about the possible identity of Bcroe cucumis Fabr. and the Mediterranean B. ovata 



Bo.sc. was raised by Vanhoffen. In his paper "Die gronlandischen Ctenophoren" (p. 20) he says: 



"Die kraftigere Bcroe o%>af(i der warmeren Meere mag, bis weitere Untersuchungen vorliegen, als 



eigene Art gelten, da ich kein gemiigendes Vergleichsmaterial habe, diese Frage zu entscheiden, 



obwohl ich mir uicht verhehlen kann, dass der von Chun (Ctenoph. Golfes Neapel, p. 305) zwischeu 



B. ovata und B. roseola (= cucumis) angegebene Unterschied, das F'ehlen eines Gefassnetzes auf der Magen- 



wand von B. roseola nicht stichhaltig ist. Sowohl bei der gronlandischen Bcroe wie auch bei den Exem- 



plaren von Kiel habe ich die die Magenwand umspannenden Aste der von den Meridionalgefassen 



ausgehenden Prolifikationen nachweisen konnen". 



Objecting to this cautious suggestion of the po.ssible indentity of the two species Chun (Die 



II* 



