330 NATHAN BANKS. 



8. — Subcostal accessory veinlet of fore wings with four branches... Isogeiins. 



Subcostal accessory veiulet of fore wini^s with less than four brandies 9. 



9. — Two ocelli P^^eudoperla. 



Three ocelli I'trla. 



10. — All tarsal joints equally long;. Tseniopteryx. 



Second joint shorter than others 11. 



11. — Anal space of hind winjjs small, veins of pterostigma simple L<euctra. 



Anal space of hind wings larger, veins of pterostigma form an X. 



Neiuoiira. 

 Suborder COERODENTIA. 

 Super-family TERMITINA. 



This embraces two families, vvliich may be separated as follows: 



Tarsi four jointed TERMITID^. 



Tarsi three jointed BMBID^ 



TERMITID^. 



These are termed " white ants," since they live somewhat on the 

 plan of the true ants. The workers and soldiers are wingless, the 

 males and females winged. They are mostly tropical, but one spe- 

 cies is common all over the United States. 



Our genera may be separated as follows: 



1. — Ocelli absent Terinopsisi. 



Ocelli present 2. 



2. — Costal area veined, tarsi with apical plautula, prothorax large, oblong. 



Caloterines. 

 Costal area free, plantula absent, prothorax cordate Term«'S. 



EMBID^. 



Of this family we have but one genus ( Ollgotoma) and one species, 

 found in Florida. 



Super-family PSOCINA. 



This embraces two families, easily separated as below : 



Ocelli present, wings well developed PSOCIDjE. 



Ocelli absent, wingless or rudimentary wings ATROPID^E 



ATROPID^. 



The species of this group are similar to the true Psocidse. They 

 live usually in concealed places. Our genera may be separated as 

 follows : 



1. — Meso- and metathorax united, no wings Atropos. 



Meso- and metathorax separate, rudimentary wings 2. 



2. — Wings with veins Dorypleryx. ■ 



Wings veinless, in form of squamse or tiiberc^les 3. 



3. — Squamae small, hyaline C'lotliilla. t;/fr;T,i,U,< 



Squamse in the form of scars,'* .^ L.epiuotiis..^ ' 



Small tubercles iu the place of squamas H^peretes. 



