AKT. 8. ON BOECKELLA AND PSEUDOBOECKELLA MARSH. 27 



of birds carrying them in mud attached to their feet, there is little 

 evidence that this actually occurs, while observed facts seem to 

 indicate that the ordinary means of distribution of fresh-water 

 copepods is by water transportation. It seems most probable, 

 therefore, that the genera traveled from the Antarctic Continent, and 

 the species have become differentiated in the various localities. 



It may be noted that inasmuch as in. the development of the 

 Centropagidae there is a tendency to reduction of the endopodites 

 of the fifth feet of the male, from a phylogenetic standpoint Pseudo- 

 hoeckella would be considered more primitive than Boeckella. 



LITERATURE ON BOECKELLA AND PSEUDOBOECKELLA. 



Brady, G. S. 



1875. Note on Entomostraca from Kerguelen's Land and the South Indian 



Ocean. Ann. Mag. Nat. Hist., vol. 16, p. 152. 

 1879. An account of the petrological, botanical, and zoological collections made 

 in Kerguelen Land and Rodriguez during the transit of Venus expeditions, 

 1874-75. Philos. Trans. Roy. Soc. London, vol. 168, pp. 215-218. 

 1906. On the entomostracan fauna of the New Zealand lakes. Proc. Zool. Soc. 

 London, 1906, pp. 692-701. 

 Dad AY, E. 



1901. Diagnoses praecursoriae Copepodorum novorum e Patagonia. Term^szetr. 

 Fuzetek, vol. 24, pp. 345-350. 



1902. Mikroskopische S iisswasserthiere aus Patogonien gesammelt von Dr. 

 Filippo Silvestri. Termeszetr. Fuzetek, vol 25, pp. 201-310. 



Ekman, Sven. 



1905a. Cladoceren und Copepoden aus antarktischen und subantarktischen 



Binnengewiissern gesammelt von der schwedischen antarktischen Expedition 



1901-1903. Wiss. Ergebn. schwed. Siidpolar-Exped., vol 5, pt. 4, pp. 1-40. 



19056. Die Systematik und Synonymik der Gopepodengattung Boeckella 



und verwandter Gattungen, Zool. Anz., vol. 29, pp. 593-604. 



GiESBRECHT, W., and Schmeil, O. 



1898. Copepoda. I. Gymnoplea. Das Tierreich, pt. 6, p. 169. 

 DeGuerne, J., and Richard, J. 



1889. Revision des Calanides d'eau douce. Extrait des memoires de la Soci^t6 

 Zool. de France, vol. 2, p. 129. 

 Henry, Marguerite. 



1919. On some Australian freshwater Copepoda and Ostracoda. Journ. and 



Proc. Roy. Soc. of New South Wales, vol. 53, pp. 29-48. 

 1922. A monograph of the freshwater Entomostraca of New South Wales. Part 

 2, Copepoda. Proc. Linn. Soc. New South Wales, vol. 47, pt. 4, 1922, pp. 

 551-570. 

 Lubbock, J. 



1854. On the fresh water Entomostraca of South America. Trans. Entomol. 

 Soc. London, new ser., vol. 3, pp. 232-240. 

 Marsh, C. Dwight. 



1906. Les lacs des hauts plateaux de TAmerique du Sud, par Dr. M. Neveu- 

 Lemaire, Soudier, Paris. Cop^podes par C. Dwight Marsh, pp. 175-188. 

 Mrazek, Al. 



1901. Siisswasser-Copepoden. Ergebn. Hamburg Magalhaens, Sammelr., pt. 

 6, No. 2, 29 pp. 



