ENTOMOSTRACA.* 
Syn. Entomostraca, Muller , Entomostraca, 1785. 
— latreille , Precis des Caracteres gener. ; Hist. Nat. 
gen. et part, des Crustac. ; Genera Crustac. et 
Insectornm ; Cnv. Begne Animal. 
— Leach, Edinburgh Encyclop. ; Encyclop. Britann. ; 
Diet, des Sc. Nat., xiv. 
— Dumeril, Zoologie analytique. 
— Risso, Hist. Nat. des Crust, des Envir. de Nice. ; 
Hist. Nat. de l’Eur. merid. 
— Desmarest, Consid. gen. sur les Crust’ 
— J. F. Gray, Synops. of Cont. of Brit. Mus., 1812. 
Aspidostraca or Entomostraca, and Siphonostoma, Burmeister, 
Organization of Trilobites (Bay Society’s 
edit.), p. 31. 
Monoculus, Limans , Syst. Nat., 1st edit., 1735 ; et edit, subseq. ; 
Eaun. Suec., 1st edit., 1716. 
— Fabricius, System. Entomolog. ; Entomolog. Systemat. 
— Cuvier , Tab. element. 
— Cuvier et Dumeril , Anatomie comparee. 
— Geoffroy, Hist, abreg. des Ins. des Envir. de Paris. 
— Manuel, Encyclop. method. 
BranchiopteRES and Entomostraces, Blainville, Princ. d’Anat. 
comp. 
Les Monocles, Jurine, Hist. Nat. des Monoc. des Envir. de Geneve. 
Crustaces sessiliocles, Lamarck, Syst. Anim. s. Yert., 1801. 
Branchiopodes, Lamarck, Hist. An. s. Yert., 1st edit., 1818. 
— Bose, Man. de l’Hist. Nat. des Crust. 
Character . — The Entomostraca may be characterised 
by their being all aquatic ; by their being covered with 
a shell or carapace, which is of a horny or coriaceous 
texture, 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 their feet being jointed, and all more or less 
* From f vrofioQ, an insect ; and oorpaxov, a shell. 
