$86 SYSTEM OF INSECTS. 
which arefurnished with lateral spinulze,—thus, as hesup- 
poses, connected with the Polypods ; and with the Ano- 
plura by others (Epizoaria Lam.) in which appendages 
appear somewhat analogous to the legs of Hexapods, as 
in Cecrops Leach, and which like them are parasitic ani- 
mals*, But the right of these worms to be considered 
as members of the same Class with the Hexapods and 
Polypods at present appears rather problematical, and 
requires further examination. 
Der. Metamorphosis subcomplete?. 
Body consisting of numerous segments. 
Mouth perfect. 
Eyes compound or aggregate. 
Antenne distinct. 
Legs six on the trunk, many on the abdomen. 
I must next say something on the Orders of the Arach- 
nida. Every one, at first sight, sees that spzders and 
scorpions are separated by characters so strongly marked, 
that they look rather like animals belonging to different 
Classes than to the same: these form the two primary 
Orders of the Arachnida, and they appear to be con- 
nected by two secondary or osculant ones,—on the one 
side by Galeodes, and on the other by Thelyphonus and 
Phrynus‘. ‘This Class, although there is an appearance 
* Hor. Entomolog. 286. > The number of segments 
and legs acquired by these insects in their progress to their last state, 
distinguishes their metamorphosis from that of other Aptera, and re- 
quires a distinct name. | © Vora lit p. 418. 
* When I said (Vor. TIE. p. 31.) that Phrynus probably belonged 
to the true Arachnida, it escaped my recollection that Latreille had 
placed that genus there. 
