160 P- L. Kramp 



Genus Pegantha Haeckel. 



In its modern sense the genus Pegantha comprises all the four genera, Polycolpa, 

 Polyxenia, Pegasia and Pegantha, which in Haeckel's monograph constitute the 

 family Peganthidae. A considerable advance towards a revision of the numerous species 

 of this group was made by H. B. Bigelow in several papers, first and foremost in his 

 beautiful work on the medusae collected in the eastern tropical Pacific by the S.S. 

 Albatross in 1904 and 1905 (Bigelow^, 1909), in which adequate descriptions with 

 pretty and elucidating figures are given of several species, in most cases based on his 

 own examination of the specimens in life, or at least in the fresh condition. Valuable 

 additions to our knowledge of these medusae are given in Bigelow^'s subsequent 

 papers, and by means of the extensive material collected by the Discovery expeditions 

 I have recently been able to carry through an almost complete revision of the species 

 belonging to Pegantha (to be published in the near future in the " Discovery Reports "). 

 This has enabled me to identify the specimens previously examined by Haeckel. 

 None of these specimens were, however, provided with definite specific, or even 

 generic, names, as will be seen from the following notes, and none of the localities are 

 recorded in Haeckel's monograph. 



There are four species o{ Pegantha in the collection; they are mentioned here under 

 their proper names, as I have identified them, not according to the denominations 

 given by Haeckel in the list. 



Pegantha martagon Haeckel. 

 Pegantha martagon Haeckel, 1879, p. 332. 

 (92) 29-31° N. 33-34° W. Hygom. 3 specimens, determ. Polyxenia'^. sp. 

 (99) Atlantic Ocean north of the equator; Warming, 1866. 1 specimen, determ. 

 Cunina sp. 



Pegantha triloba Haeckel. 

 Pegantha triloba Haeckel, 1879, p. 333. 

 (95) Atlantic Ocean south of the equator; Friis, 1861. 2 specimens, determ. 

 Aegineta'] 



Pegantha laevis H. B. Bigelow. 

 Pegantha laevis H. B. Bigelow, 1909, p. 97, PI. 16, fig. 1, PI. 20, figs. 4-6, 



PI. 27, figs. 1-7. 

 (90) 20° N. 40° W., between Africa and the West-Indies; Hygom, 1860. 2 



specimens, determ. Cuninal sp. 

 (94) 22° N. 22° W., between the Canary Islands and the Cape Verde Islands; 

 Hygom. 1 specimen, determ. Aegineta sp. 



(97) 25° 05' N. 30° W., N.W. of the Cape Verde Islands; R. Nielsen, 1868/69. 



2 specimens, determ. Polyxenial sp. 



(98) No locality given; Mathiasen. 1 specimen, determ. Polyxenia sp. 

 (115) West-Indies; Suensson. 1 specimen, determ. Cuninal sp. 



(160) 8° 38' N. 24° 58' W., S.W. of the Cape Verde Islands; Mathiasen, 1848. 

 4 specimens, determ. Cunina sp. 



