Parasitic Copepoda 5 l 



Krc^yer was the next to present a "Conspectus Crustaceorum Groenlandiae', 

 in the Naturhistorisk Tidsskrift, vol. 2, 1838-39, p. 249. This portion did not 

 include any copepods, but the second and third portions pubhshed in Danske 

 Videns. Selskab. Natur. og Math. Afhand., vol. 7, 1839, included both free 

 swimming and parasitic forms, but only a few species. 



In 1857 H. Rink published in Copenhagen a volume entitled "Greenland 

 geographisk og statistisk beskrevet," to which various authors contributed. 

 The Natural History supplement contained (p. 28-49) a list of Greenland 

 Crustacea, Annelids and Worms by J. Th. Reinhardt. 



In 1875 T. R. Jones published in London a similar "Manual of the Natural 

 History, Geology and Physics of Greenland and the Neighbouring Regions." 

 In the Appendix, p. 146-165, appeared a hst of the Crustacea of Greenland by 

 Chr. Llitken, which embraced both free swimming and parasitic forms. And 

 finally, in 1913, K. Stephensen presented in the Meddelelser om Greenland, 

 vol. 22, a "Conspectus Crustaceorum et Pycnogonidorum Groelandise," which 

 included all that had previously appeared and added many new species. 



These publications were concerned with the fauna of a single country 

 which had been studied far more often and in greater detail than any other 

 portion of the polar regions. But there have also been the reports of numerous 

 expeditions sent by the various nations of the world either to the North or the 

 South Polar regions. Great Britain, the United States, Norway, Sweden, 

 Denmark and Germany have all taken part in these polar explorations and each 

 has contributed its quota to our knowledge of their fauna and flora. 



And there have been a few reports on collections made by private individuals 

 or by various museums. From all of these the following list has been compiled. 

 Probably it could be augmented by some of the species found in northern 

 Norway and Sweden, if their geographical distribution were sufficiently known. 

 The Kara Sea and the Murman Coast also suggest promising possibilities, but 

 while the Russian author, Birula, has written several papers upon the Decapod 

 Crustacea from those localities and from Spitzbergen, practically no attention 

 at all has been given to the parasitic copepods. 



As here given the list includes 28 Lernseopodoida, 20 Monstrilloida, 18 

 Caligoida, 11 Notodelphyoida and 2 Harpacticoida, all the groups which possess 

 any parasitic forms being represented. 



There are also two species which cannot be referred to any of the groups 

 with certainty or even probability. 



The name Lernseopodoida has been substituted for the group designated 

 as Lernseoida by Sars in 1901, in accordance with a suggestion made by Rev. 

 T. R. R. Stebbing in his General Catalogue of South African Crustacea, published 

 in the Annals of the South African Museum, vol. 6, 1910, p. 561. 



The life history of the genus Lerncea as given by the present author in 

 Bulletin U.S. Bureau of Fisheries, vol. 35, 1917, p. 165-198; pi. 6-15, shows 

 conclusively that this genus and the family Lernseidae belong to the Cahgoida. 

 Hence the name cannot be used to designate another of the groups or divisions. 



Parasitic Copepods from Polar Regions. 



COPEPODA LERN^OPODOIDA. 



Chondracanthus cornutus (Miiller). 



Lerncea cornuta, Mtjllbr, 0. F. "Zoologiee Danicae Prodromus," 1776, 



p. 227. 

 Chondracanthus cornutus, LtJTKEN", Ch. "The Crustacea of Greenland." 



T. R. Jones' Manual of Greenland, 1875, Appendix, p. 162. 

 Found on the gills of various flounders on the coasts of Greenland and 

 Labrador. 



