HISTORY OF ENTOMOLOGY. 4-75 
the Acarina, with the exclusion of Hydrachna a . It is 
remarkable enough that his Class as it stands, with a 
slight alteration, returns into itself, thus forming a circle; 
for his first Order {Gnathaptera) contains Hydrachna 
and the Thysanura^ and his last (Aptera) ends with the 
Anoplara^ and Acarina. 
All the French Entomologists have followed Olivier 
and Latreille in adopting, with some variation, Geof- 
froy's system with regard to the Coleoptera, which has 
rendered them all more or less artificial. Dumeril has 
constructed a table of the Order, arranged differently 
from that above given b of Latreille ; but not more na- 
tural, for the very same reason. 
Our learned countryman, Dr. Leach, by his zoolo- 
gical labours has thrown much light on the natural dis- 
tribution of the Animal Kingdom, and no department 
of that kingdom is more indebted to him than the 
Anmdosa ; of which I have before stated to you his 
Classes c . I shall now give a table of his Orders ofArach- 
nida and Insecta Latr. and also his families, &c. of his 
Classes Mijriapoda and Arachnides d . 
Class. Order. Family. 
{C Glomerides. 
Chilognatha < Iulides. 
r Polydesmides. 
C Cermatides. 
Syngnatha < Scolopendrides. 
( Geophilides. 
3 Anat. Comp. i. t. viii. 
b Expos, d'mie Meth. Nat. 17- 
c Vol. III. p. 19. 
d Linn. Trans, xi. 376. N. B. I have transferred from the Arach- 
nida his suborder N'otostomata, as he subsequently placed it at the 
end of Insccla, under the Omaloptcra. 
