352 ORISMOLOGY. 
* * Areolets of the Intermediate Area. 
1. Protomesal {Protomesce). First series of the mid- 
dle areolets [Areola media), often consisting of 
three, and then divided into upper, middle, and 
lower, areolets. Plate X. Fig. 8, 9. a. 
2. Deuteromesal {DeuteromescE). Second series of 
the same, often consisting of two, and then divided 
into upper and lower. Ibid. b. 
3. Tritomesal ( Tritomcscc). Third series of the same. 
Ibid. c. 
K. Stigma. 
1. Blind {Ccecuni). When the stigma is wholly opaque, 
and neither begins nor terminates in a minute 
areolet. — Ex. Most Hymenoptera. 
2. Fenestrate {Fenestratum). When the stigma be- 
gins or terminates in a minute areolet. Plate X. 
Fig. 11. m m . 
L. Number. 
1. Apterous (Aptera). Having no wings. 
2. Dipterous {Dipt era). Having two wings. 
3. Tetratterovs' {Tet7-aj)tcra). Having Jour wings. 
/. legs [Pedes). 
A. Number. 
1. Tetrapod {Tetrapus). An insect having only four 
perfect legs. — Ex. Vanessa. 
2. Hexapod {Hexapus). An insect having six legs. — 
Ex. Insects Proper in general. 
3. Octopod {Octopus). Having eight legs. — Ex. Ara- 
neidea. 
