NO. 2063. yORTH AMERICAN PARASITIC C0PEP0D8— WILSON. 597 



and Argulus. But while locating them thus wrongly, he at the same 

 time pointed out their close relationship to the Entomostraca, and 

 thus made a notable advance over his predecessors. De Blainville 

 pubUshed in the Bulletin des Sciences, Paris, 1816, a new classification 

 of the animal kmgdom in which he placed the Lernaeopodidae with 

 other copepod parasites, in a subclass Epizoaires under the class 

 Tetradecapods and the group Articulates. Later he made a special 

 study of the Lernaeidae and gave (Journal de Physic[ue, 1822) the first 

 good account of tlieir anatomy. He divided the family into a large 

 number of new genera, which he arranged according to their morphol- 

 ogy and the nearness with wliich they approached Caligus. The 

 seventh of these was the new genus LernaeoiJoda, the type of the present 

 family. Latreille in Cuvier's Regne Animal keeps the Lernaeans 

 among the intestinal worms even as late as 1830. 



He admits that other authors have claimed that these parasites 

 are Crustacea, as is shown by the males, but he adds, "pour consacrer 

 cette opinion, il foudrait pouvoir retrouver ces males" (vol. 3, p. 256). 



He introduces with Oken's Clavella the new genera Anchorella and 

 BrachieUa, which belong to the Lernaeopodidae and are of course 

 ascribed to Cuvier. In 1831 he published a Cours d'Entomologie 

 in his own name wherein he described the Siphonostoma as an order 

 of the section Edentata of the class Crustacea. He calls the second 

 family of this order Lernaeiformes, but does not include in it any of 

 the Lernaeidae, thus failing to recognize their relationship with the 

 Siphonostomata and other Crustacea. 



Desmarest, in his monograph of the Crustacea (1825), after showing 

 that the Lernaeidae belong with the Caligidae among the Crustacea, 

 finally places them under the Poecilopoda, an order of the subclass 

 Entomostraca. Wiegmann, in his Grundriss der Zoologie (1823), 

 was the first to give the Lernaeidae their proper position, partly 

 agreeing with Blainville, partly with Desmarest, and partly with 

 other German investigators hke Nitzoch and Leuckart. He was fol- 

 lowed by Nordmann (1832) and Burmeister (1833), who confirmed 

 the position assigned, to the Lernaeidae, and added many of the facts 

 necessary to confirm their views. Nordmann established the new 

 genera AcJitheres, Basanistes, and Tracheliastes, and described new 

 species in several of the old genera. Burmeister at the close of his 

 paper adds some general considerations in which he gives us the first 

 division of the group Siphonostoma into five famihes. The second 

 of these, the Lernaeoda, corresponded almost exactly with the modern 

 family Lernaeopodidae, but included, beside the true Lernaeopod 

 genera, Chondracanihus and Lernanthropus. 



Mine Edwards was thus furnished with a large amount of necessary 

 data which enabled him in his great work, Histoire Naturelle des 

 Crustaces (1840), to perfect the classification of the parasitic cope- 



