CLASS I. CRUSTACEA. 
77 
ot Insects: 1. Les Entomostracis (of Muller): 2. Les Crustac'ts: 3. Les 
Myriapodes. 
In that excellent little work Le Tableau Elementaire dc FHistoire 
uturelle des Antmaux, par G. Cuvier (1797), the Crustacea axe arranged 
the Insecta, Aruchnuidea, and Myriapoda, under a division entitled 
nscetes pounms de Mackoircs, et sans Aiks,’ where they are placed at 
le . Lead of the Insects, in a limited and well defined section (A.), 
llc h he afterwards, in his Lemons d' Anatomic Comparer, established 
011 anatomical principles, as a distinct class, named Crustacea, 
. 1798 Fabricius published a Supplement to his last work, in 
t llc h, by the aid of-the Baron de DaldorfT, he established several new 
8°ncra, and amended the arrangement of the whole. 
, Lamarck in his Systems des Animaux sans Vertebra (1001) adopted 
Crustacea as a peculiar class. Tins system was adopted by 
,, Bose, who in the same year published his Histvirc Naturelle des 
„ rust acisjaisant Suite d F edition dc Bnffon par Caste/, in which for the 
rat time we are made acquainted with his interesting genus Zoea. 
. Latreille in his Histoire Naturelle des Crustaces et des lnseclcs, tom. 3. 
in • ^ a ^°l’L’d the class Crustacea, and distributed the genera compos- 
es 't'nto two subclasses: 1. Entomostracis: 2. Malacostraces: exclud- 
u g however the Tetraecres , ( Ascllidte , and Oniscidie,) which he referred 
°o au h -(, lass of Insects. 
1 ,^ uui( " r h ( Zuologic Analytiquc, 1800) arranged tliese animals into 
■ Entomostracis, and 2 . Astacoides, excluding Onisais, Armadillo, &c. 
nch he placed with the apterous insects. 
Latreille in the same year produced his celebrated Genera Crus- 
!j**orum et Inscctorum, where they are divided into Entomostracu and 
la lucostracu, the Tetracera being referred to the Insects. 
Wi 
* The 
author in his Considerations Generates, 8cC, (1810) fol- 
’^ed the same divisions, referring however the Tetracera to the Arach- 
''"idea. 
( "cc !/' t * le j 3evenl 'h volume of the Edinburgh Encyclopadiu, article ‘Crus- 
^Ol/lo. 
’SU/ Dr. Leach distributed the Crustacea into three Orders : 1. En- 
o strata : 2. Malacostraca : S. Myriapoda : in which the Tetracera 
- ere included. 
,, 1 ^* jLe Myriapoda (which he established as a distinct Class), am 
the , ’•hem with the Malacostracaia an Order named Gasteruri, wher 
the 
In tire Appendix, however, he divided the Tetracera 
and 
here 
c Were associated with the Commends, and considered the Mala- 
** a| id Entomostracu as sub-classes. This opinion he has since 
Q( ,,. lai ned in a paper published in the eleventh volume of the Trans- 
>ons of the 
Linnean Society of London, in the first volume of the Sup- 
f ® en t 1° the Encyclopedia Britannica, and in the Bulletin des Sciences 
r 1816. 
(B*r/fLu nV *ll e j n jug B ro d rom c d'une Nouvelle Distribution Systematiifhe 
Lias dCS Sci V ,ce *’ $ c - 18 1G) has arranged the Crustacea into three 
SCS: L Dccapodes : 2. Heteropodes; 3. Tetrudecopodes.” 
