AMERICAN PARASITIC ARG ULID.T^ WILSON. 64 1 



1891. Parker, G. H. The Compound Eyes in Crustaceans. 



- Bulletin of the Museum of Comparative Zoology Harvard, XXI, p. 77. 



Describes the eyes of an Argulus found on Fundulus heteroclitun in an aquarium. 

 1891. Van Benedkn, P. J. Un Argule nouveau des cotes d'Afrique. 



Bulletins de I'Academie royale de Belgiqne (3), XXII, p. 309. 



Describes and figures the new species A. melita. 



1891. Stithlmann, F. Gyropeltis ranarum. 



Zoologischer Jahrbiicher, Systematische, VI, pp. 152-1.>4. 

 Describes and gives text-figure of the new species. 



1892. Weber, L. Die Siisswasser-Crustaceen des indischen Archipels. 



Zoologische Ergebnisse, II, p. 544. 



Describes the new species A. indiem, but gives no figure save one of the posterior legs. 



1895. Carphin, J. Argulus foUaceus in the Edinburgh District. 



The Annals of Scottish Natural History, 1895, p. 255. 



Seven specimens of A. foUaceus, six free and one attached to a stickleback, found in a 

 canal among Anacharis, near Meggatlandgate. 



1896. Drybowski, B. Nowe poglady i tearye z zakresu anatoinii porownawczej. 



Kosmos polski, XX, XXI. 



Compares the appendages of Argulidae, Cladocera, Copepoda, etc. 



1897. BouviER, E. L. Observations sur les Argulides du genre Gyropeltis recueillis 



par M. Geay au Venezuela. 



Bulletin du Museum d'histoire naturelle, Paris, 1897, pp. 13-19, 7 text figures. 



Describes the new species (/cnyi and refers three other specimens to the species kollari 

 Heller. 

 1899. BoiTviER, E. L. Sur les Argulides du genre Gyropeltis recueillis ret'eminent par 

 M. Geay dans la Guyane. 



Bulletin du Museum d'histoire naturelle, Paris, 1899, pp. 39-41. 



Describes three new species, rrperfa, striata, and bidentata, and now claims that the three 

 specimens which were referred to koUari in 1897 are really a new species, for which he pro- 

 poses the name discoidalis. 

 1899. BouviER, E. L. Les Crustaces Parasites du genre Dolops, Audouin. 



Bulletin de la Socit§t6 Philomathique de Paris, 8th ser., X, pp. 53-81, and 9th ser., I, pp. 

 12-40. 



Restores the original name {Dolops) proposed for this genus by Audouin (1837). 



Describes and gives text-figures of the new species contained in the two preceding papers. 

 A fine summary of the genus and all known species. 

 1901. Thiele, Johannes. Diagnosen neuer Arguliden-Arten. 



Zoologischer Anzeiger, XXIII, pp. 46-48. 



Describes three new species of Argulus, africanus, japonicus, and scutiformis; establishes 

 the new genus Chonopeltis, and describes the single species inermis. No figures for any of 

 the species. 



ECOLOGY. 



The problems of parasitism and its attendant degeneration are among 

 the most interesting in the whole realm of ecology, and nowhere can 

 they be .studied to any better advantage than among the parasitic 

 copepods. 



We can find here every grade of parasitism and can easily follow 

 the resultant effects in the habits and morpholgy of the parasites 

 themselves. There are forms like A'rgulus which not only move about 

 all over the body of their host, but also change frequently from one 

 species of fish to another, and can even leave their host at will and 

 swim about freeh', sometimes for several days, before returning. 



Retaining thus completely their powers of locomotion we should 



not expect nor do we find in them any degeneration, but rather such 



Proc. N. M. vol. xxv— 02- 



