352 ORISMOLOGY. 



** Areolets of the Intermediate Area. 



1. PROTOMESAL [Protomesce]. First series of the mid- 



dle areolets (Ar coles mediae), 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 ( Tritomesce). Third series of the same. 



Ibid. c. 



K. Stigma. 



1. BLIND (Coscum). When the stigma is wholly opaque, 



and neither begins nor terminates in a minute 

 areolet. Ex. Most Hymenoptera. 



2. FENESTRATE (Fenestratwri). When the stigma be- 



gins or terminates in a minute areolet. PLATE X. 

 FIG. 11."'. 



L. Number. 



1. APTEROUS (Aptera}. Having no wings. 



2. DIPTEROUS (Diptera). Having two wings. 



3. TETRAPTEROUS (Tetraptera). Having four wings. 



t. LEGS (Pedes). 

 A. Number. 



1. TETRAPOD (Tetrapus). An insect having oidyfour 



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- 



neiclea. 



