150 P- L- Kramp 



Specimens, they are usually reliable, though sometimes one must wonder at what he 

 has overlooked (e.g. in " Hippocrene platygaster " and " Thaumantias eschscholtzii ", 

 see below). 



Occasionally some of the specimens in the Copenhagen collection have been re- 

 examined, partly by me (Kramp, 1919; 1926; 1947, specimens from the northern 

 Atlantic), partly by Cl. Hartlaub (1913, northern Pandeidae) and by G. Stiasny 

 (1922 a, some East- Asiatic Scyphomedusae). Remarks on some tropical Atlantic 

 forms will also be published by me in the near future {Atlantide Reports and Discovery 

 Reports, in press). 



A revision of the whole collection may, however, be useful to future workers on 

 medusae, and in the present paper I shall give a complete list of that part of the old 

 collection which is still in existence. Fortunately, as seen from the list, none of the 

 specimens, which have disappeared, belonged to species which are not represented 

 in the preserved collection. The succession of the species follows the order in which 

 they are mentioned in Haeckel's monograph and with Haeckel's generic and specific 

 names as head-lines, with the exception of the Narcomedusae, none of which were 

 finally determined by him. In square brackets [ ] is added the correct name of each 

 species as found by the revision, in so far as it differs from the name given by Haeckel 

 or in cases where this latter turned out to comprise two or more species. The figures 

 in common brackets ( ) refer to the numbers in the list. 



It is very understandable that Haeckel, in his worship of beauty, was attracted by 

 these pretty animals. His " System der Medusen ", followed immediately by his work 

 on deep-sea medusae in the Challenger Reports (1881), is a mile-stone in the progress 

 of our knowledge of the medusae, and this progress soon became rapid, especially 

 when one great expedition after another was sent out to explore the oceans and their 

 inhabitants. No wonder that the knowledge contained in Haeckel's works was soon 

 considerably augmented, and the reliability of his apprehension of the observations, 

 or even of the observations themselves, were considered open to doubt. In the present 

 paper I hope to contribute to the removal of some of these cases of doubt. 



When the next monograph of medusae appeared in A. G. Mayer's " The Medusae 

 of the World " (1910), H. B. Bigelow^ had just published his outstanding work on the 

 medusae of the eastern tropical Pacific (1909) to be followed {provisionally until 1940) 

 by many other papers, to which the student of medusae must continually refer for 

 valuable information. 



ANTHOMEDUSAE 

 Codonium princeps Haeckel. 

 1879, p. 13, PI. I, figs. 1, 2. 

 [Sarsia princeps (Haeckel).] 

 The description is based entirely on specimens in the Zoological Museum, Copen- 

 hagen. Specimens are still retained from the following localities: 

 (8 and 13) Greenland? Mus. zootom. Hafn. 3 specimens. 



(9) Davis Strait and Baffin Bay; Borch, 1859. 2 specimens. 



(10) Greenland; 1865. 7 specimens. 



(12) Umanak, Greenland; Fleischer, 1865 (Neotype). 1 specimen. 



(137) Godhavn, Greenland; Olrik, 1860. 12 specimens. 



(138) Greenland. 4 specimens. 



