A revision of Ernst Haeckei's determinations of a collection of Medusae 161 



Fegantha clara R. P. Bigelow. 

 Pegantha clara R. P. Bigelow, 1909, p. 80, 2 figs. 

 Fegantha smaragdina H. B. Bigelow, 1909, p. 90, PI. 14, f^gs. 1-2, PI. 19, 



figs. 1-9, PI. 22-26. 

 (93) 3^ S. 27° W., N.E. of Cape San Roque, Brazil; Hygom. 1 young specimen, 

 determ. Polyxenia'? sp. 



Aeginopsis lawentii Brandt. 

 1879, p. 342. 

 (145) Greenland; Holboll, 1841. 3 specimens. 

 Haeckel has only determined these specimens as Aegina sp. ?, and they are not 

 mentioned in the monograph. They belong to the high-arctic species Aeginopsis 

 lawentii Brandt, 1838. 



SCYPHOMEDUSAE 



In the collection of the Zoological Museum of Copenhagen are several ancient 

 specimens of Stauromedusae, mainly identified by J. Steenstrup. They were not 

 sent to Haeckel, and the localities where they had been taken are not mentioned in 

 his monograph. They will therefore not be mentioned here. 



Some of the specimens belonging to other groups of Scyphomedusae and examined 

 by Haeckel have been re-examined and correctly identified by G. Stiasny, Leiden, 

 whereas I am responsible for the revision of the others. 



Periphylla hyacinthina. 



1880, p. 419, PI. XXIV. 



[Periphylla periphylla (Peron & Lesueur). 



The collection contains several specimens of this species; all of them had previously 

 been labelled as Charybdea hyacinthina by Steenstrup who had, however, never 

 published any account of them. In the list as well as in his monograph Haeckel has 

 altered the name to Periphylla hyacinthina Steenstrup, and since the time of Haeckel 

 this name has usually been accepted. On a previous occasion (Kramp, 1947, pp. 40 IT) 

 I have discussed the generic as well as the specific name of this medusa. I retained the 

 generic name Periphylla, but I came to the conclusion that the specific name hyacin- 

 thina had to be altered, because Steenstrup, who applied it to his specimens, never 

 published it but merely wrote it on the labels of the specimens and in the hand-written 

 journals of the museum, the "Acta Mus. Hafniensis " 1837 and 1842. which are 

 quoted by Haeckel. As a specific name hyacinthina was first used for this species 

 by LtJTKEN (1875) and then by Haeckel (1879), but the species had been described 

 several times before under different names (for details, see Kramp, 1947), and to avoid 

 further confusion I stuck to the first indubitable name, periphylla Peron & Lesueur, 

 1809. In my opinion the correct name of this medusa must be Periphylla periphylla 

 (Peron & Lesueur). 



With one insignificant exception (Greenland, without further particulars, 1842) 

 the specimens determined by Haeckel are all in our collection, and since the localities 

 have not previously been published in details, it may be desirable to give them here. 



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