A revision of Ernst Haeckei's determinations of a collection of Medusae 1 59 



Liriope rosacea. 



1879, p. 290. 



[Liriope tetraphylla (Chamisso & Eysenhardt).] 



The record of L. rosacea in the monograph is only a quotation from Eschscholtz 



( 1 829), who described it from near the equator in the Pacific Ocean as Geryonia rosacea ; 



but in our collection are several specimens identified by Haeckel as L. rosacea from 



the following two localities: 



(62, 63) 10= N. 105' E., in the Gulf of Siam; Strandgaard, 1860. 2 specimens. 



(67) Red Sea; H. Koch, 1872. 6 specimens. 



I agree with the authors who unite all the numerous " species " o^ Liriope into one: 

 L. tetraphylla Chamisso & Eysenhardt. 



Liriope crucifera Haeckel. 

 1879, p. 290. 

 [Liriope tetraphylla Chamisso & Eysenhardt.] 

 The description of this new species was based on the following specimen: 



(150) 35° S. 24° 30' E., near Algoa Bay on the south coast of Africa; Andrea, 

 1870. 1 specimen. 

 The description is in good accordance with the appearance of the specimen, but I 

 see no reason for keeping the species distinct from L. tetraphylla. 



Glossocodon lUtkenii Haeckel. 



1879, p. 293, PI. XVIII, fig. 5. 



[Liriope tetraphylla Chamisso & Eysenhardt.] 



(65) 30° N. 17° W., north of the Canary Islands; Hygom, 1857. 1 specimen. 



(66) 36-40° N. 26-45° W., west of the Azores; Andrea, 1861. 1 specimen. 



(68) 35° N. 27° W., south of the Azores; Hygom, I860. 1 specimen. 



The new genus Glossocodon, of which this is the type-species, was said to differ 

 from Liriope by the absence of interradial tentacles in the adult stage, whereas they are 

 present in young specimens (like that from No. 68); evidently these tentacles were lost 

 by preservation in the other specimens. The species lUtkeni is further characterized 

 by its very broad gonads, which have a peculiar distal incurvation, forming two lateral 

 angular dilatations. There is no trace of this conformation of the gonads in the 

 specimens Nos. 65 and 68, and in the specimen No. 66 it is distinct in only one of the 

 four gonads. Accordingly there is no reason to retain L. liitkeni as a separate species. 



NARCOMEDUSAE 



Pegasia sieboldii Haeckel. 

 1879, p. 331. 

 This new species was described from a single specimen collected by Hygom in the 

 tropical Atlantic. The specimen is not in our collection, and no " Pegasia " is mentioned 

 in the list. According to Mayer (1910, p. 444) the species is probably identical with 

 Pegasia dodecagona Peron &. Lesueur; this is, however, a doubtful species. Haeckel's 

 description seems to me to indicate that Pegasia sieboldii should be referred to Peg- 

 antha triloba Haeckel. 



