DEFINITION OF THE TERM INSECT. 3 
animals. His Hnazma, or animals that have blood, he 
divides into Quadrupeds, Birds, Fishes, Cetacea, and 
Apods or reptiles ; though he includes the latter, where 
they have four legs, amongst the quadrupeds?; and his 
Anaima, or animals without blood, into Malachia, Ma- 
_ lacostraca, Ostracoderma, and Entoma. The first of 
these, the Malachia, he defines as animals that are ex- 
ternally fleshy and internally solid, like the Enaima; and 
he gives the Sepia as the type of this class, which answers 
to the Cephalopoda of the moderns. The next, the Ma- 
lacostraca, synonymous with the Crustacea of Cuvier and 
Lamarck, are those, he says, which have their solid part 
without and the fleshy within, and whose shell will not 
break, but splits upon collision®. The Oséracoderma, 
corresponding with the Testacea of Linné, he also de- 
fines as having their fleshy substance within, and the 
solid without; but whose shell, as to its fracture, re- 
verses the character of the Malacostraca. He defines his 
last class Hintoma, in Latin Insecta, with which we are 
principally concerned, as animals whose body is distin- 
guished by znczsures, either on its upper or under side, 
or on both, and has no solid or fleshy substance separate, 
but something intermediate, their body being equally 
hard both within and without*. This definition would 
include the Annelida and most other Vermes of Linné, 
except the Zestacea, which accordingly were considered 
as insects by those Zoologists that intervened between 
Aristotle and the latter author. The Stagyrite, however, 
* Hist. Animal. 1.1. c.5, 6: compare |. v. c.3 and 33, and De 
Partibus Animal. |\.iv. c. 1 and 11. 
® To de axaneoy autay & Seavsov arru Drusov. 
* Hist. Animal. 1. iv. c. 1. 
BQ 
