ENT0M08TRACA.* 



Si/ii. Entomostuaca, Milller, Eutomostraca, 1785. 



— Latreille, Precis des Caracteres geiier. ; Hist. Nat. 



gen. et part, des Crustac. ; Genera Crustac. et 

 Insectorum ; Cuv. E-egne Animal. 



— Leach, Edinburgh Encyclop. ; Encyclop. Britanu. ; 



Diet, des Sc. Nat., xiv. 



— Bumeril, Zoologie analytique. 



— Wmo, Hist. Nat. des Crust, des Envir. de Nice. ; 



Hist. Nat. de I'Eur. raerid. 



— Dcsmarest, Consid. gen. sur les Crust' 



— /. E. Gray, Syuops. of Cont. of Brit. Mus., 1842. 

 AspiDOSTRACA or Entomostraca, and Sipiionostoma, Bunneister, 



Organization of Trilobites (Ray Society's 

 edit.), p. 34. 

 MoNOCULUS, Liiinmis, Syst. Nat., 1st edit., 1735 ; et edit, subseq. ; 

 Eaun. Suec, 1st edit., 1740. 



— Fabriclits, System. Entomolog. ; Entomolog. Systemat. 



— Cuvier, Tab. element. 



— Cuvier et Bumeril, Anatomic comparee. 



— Geoffroy, Hist, abreg. des lus. des Envir. de Paris. 



— Manuel, Encyclop. method. 



BkanchiopteRES and Entomostraces, Blainville, Princ. d'Anat. 



comp. 

 Les Monocles, Jurine, Hist. Nat. des Mouoc. des Envir. de Geneve. 

 Crustaces sessiliocles, Lamarck, Syst. Anim. s. Vert., 1801. 

 Branchiopodes, Lamarck, Hist. An. s. Vert., 1st edit., 1818. 



— Bosc, Man. de I'Hist. Nat. des Crust. 



Character. — The Entomostraca may be characterised 

 by their being all aqnatic ; by their being covered with 

 a shell or carapace, which is of a horny or coriaceous 

 textiu^e, and formed of one or two pieces, in some ap- 

 proaching in appearance to a bivalve shell, in others being 

 in the form of a buckler, which completely or in great 

 part envelopes the body of the animal ; by their having 

 branchiae attached either to the feet or organs of masti- 

 cation ; by then- feet being jointed, and all more or less 



* From f.vTo\ioz, an insect ; and oor^axov, a shell. 



