The Classification of Butterflies 
subKingdom is known by naturalists under the name of the Arthro- 
poda. The word Arthropoda is derived from the Greek language, 
and is compounded of two words, apfyov (, arthron ), meaning a joint, 
and tfovg (pous ), meaning afoot. The Arthropoda seem at first 
sight to be made up of jointed rings and feet; hence the name. 
The subkingdom of the Arthropoda is again subdivided into 
six classes. These are the following: 
Class I. The Crustacea (Shrimps, Crabs, Water-fleas, etc.). 
Class II. The Podostomata (King-crabs, Trilobites [fossil], etc.). 
Class III. The Malacopoda (Peripatus , a curious genus of 
worm-like creatures, found in the tropics, and allied to the Myria¬ 
pods in some important respects). 
Class IV. The Myriapoda (Centipedes, etc.). 
Class V. The Arachnida (Spiders, Mites, etc.). 
Class VI. The Insecta (Insects). 
That branch of zoology which treats of insects is known as 
entomology. 
The Insecta have been variously subdivided by different scien¬ 
tific writers, but the following subdivision has much in it to com¬ 
mend it, and will suffice as an outline for the guidance of the 
advanced student. 
Class VI. Insecta (Insects proper) 
Heterometabola 
For the most part undergoing only a partial metamorphosis in the development 
from the egg to the imago. 
ORDERS 
1. Thysanura. 
Suborders: ^ 
Collembola (Podura, Springtails). 
Sympbyla (Scolopendrella). 
Cinura (Bristletails, etc.). 
2. Derniatoptera (Earwigs). 
3. Pseudoneuroptera. 
Suborders: 
Mallophaga (Bird-lice). 
-Platyptera (Stone-flies, Termites, etc.). 
Odonata (Dragon-flies, etc.). 
Ephemerina (May-flies, etc.). 
4. Neuroptera (Corydalis, Ant-lion, Caddis-flies, etc.). 
5. Orthoptera (Cockroach, Mantis, Mole-cricket, Grasshopper, Katydid, etc.). 
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