32 Dana on the Classification of Animals 
Orders: Insects, Spiders, and Myriapods. 
Under Jnsects— | 
Suborders: 1 Pteroprosthenics, 2 Pterometasthenies, 8 Thy- 
sanures, 
*  Ordinules (confined to the Pteroprosthenics): 1 Apipens, 2 
Amplipens, 3 Attenuates or Neuropters. 
Apipens. Amplipens. Attenuates. Pterometasthenics. 
. Hy pt pidopters. Apipennif Coleopters. 
Tribes, je Dipters. Homopters. Amplipenniforms.| Hemipters. 
3. Aphanipters. frichopters. Perattenuates, Orthopters. 
The subdivisions of the three tribes under the Attenuates or 
Neuropters, (p. 22,) and those of the tribes of Orthopters, (p. 24,) 
may be all designated swbtribes; there is in the two higher of 
each a like reference to the higher tribes of Insects. 
This subject will come up again for further discussion. But, 
for comparison, I allude here to one other department of animal 
life—that of Mammals. 
] T enidontere 
no occasion for doubting that these subdivisions are codrdinates 
re is further reason for the many a 
Jogies, in t the 
base of their respective 
