A history of the British sessile-eyed Crustacea . CVAMUS DELPHINII, G. M., MALE AND FEMALE. ISOPODA. 99 Order—ISOPODA. This order of Crustacea was first defined by Latreille,and was named Isopoda, in contradistinction to the Am-phipoda, from the Greek words laog, equal, and Trodig,feet, in allusion to the general conformity in size andfunction of the seven pairs of legs, the two anteriorpairs of which, as in the Amphipods, are the homologuesof the two outer pairs of foot-jaws of the Decapod Crus-taceans. If we were to adopt the ideas of some writers,that large size constituted the especial cha
A history of the British sessile-eyed Crustacea . CVAMUS DELPHINII, G. M., MALE AND FEMALE. ISOPODA. 99 Order—ISOPODA. This order of Crustacea was first defined by Latreille,and was named Isopoda, in contradistinction to the Am-phipoda, from the Greek words laog, equal, and Trodig,feet, in allusion to the general conformity in size andfunction of the seven pairs of legs, the two anteriorpairs of which, as in the Amphipods, are the homologuesof the two outer pairs of foot-jaws of the Decapod Crus-taceans. If we were to adopt the ideas of some writers,that large size constituted the especial character of atypical group, we should be compelled to regard the last-named animals as the types of the class Crustacea, andshould be, consequently, obliged to consider the Isopodsas further removed from the type than the Amphipods,in consequence of the former being destitute of branchialappendages, in the shape of vesicles, affixed to the baseof the legs (a character which constitutes a marked dis-tinction between the two orders which form the
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Keywords: ., bookauthor, bookcentury1800, bookdecade1860, booksubjectcrustacea
