EEVISION or NEAECTIC TERMITES. 11 



DESCRIPTION OF SUBFAMILIES, GENERA, AND SPECIES. 



Subfamily Termopsinae. 



Genus TERMOPSIS Heer. 



Winged. — Head without fontauelle or ocelli; clypeus very short, 

 five or six times as broad as long: gula much longer than broad, 

 labium large, tip truncate; antennae of over 20 joints; front mng 

 scales much longer than the pronotuni, twice as large as the hind 

 pair. Legs reach beyond body. Tibia of legs with several spines 

 before tip. Wings large, densely reticulate, margin not ciliate; the 

 radius runs out beyond middle of wing, without branches: the radial 

 sector has several long superior branches, and one or m_ore less distinct 

 inferior branches; the median vein is far back of radial sector, and 

 from near middle has several branches; the cubitus runs out long 

 before tip: cerci long, live or six jointed. 



Soldier. — Head large, labrum. broad, truncate on tip: no fontanelle; 

 mandibles long, toothed unlike; antennae over 20 joints: gula plainly 

 narrowed in middle; tibia with spines before tip; cerci prominent, 

 three or more jointed. 



KEY TO SPECIES. 



Winged. 



1. Body with long erect hairs, a few above on head; eyes about one-half their short 



diameter from lower head margin; anterior corners of pronotum hardly rounded 



laticeps. 



Body with only very short fine hairs, practically none on head above; eyes about 

 short diameter from the lower liead margin; anterior corners of pronotum 

 rounded 2. 



2. Body pale yellowish, wings gray angnsticollu. 



Body darker, wings also darker nevadensis . 



Soldiers. 



1. Pronotum angulate on anterior lateral corners; femora not much swollen; basal six 



or eight antennal joints as the others, plainly longer than wide laticeps. 



Pronotum rounded on anterior corners; femora greatly swollen; basal six or eight 

 joints of antennae hardly longer than wide ungusticollis. 



TERMOPSIS ANGUSTICOLLIS Hagen. 



Winged. — Castaneous; head rather darker in front, pronotum not 

 as reddish, femora also more yellow. Wings uniform dark gray or 

 pale brown; the costal area more yellow. Head much broader above 

 eyes than below. Eye fully one and one-half times higher than 

 broad, about its short diameter from lower margin; (fig. 1 h) antennae 

 as long as head plus pronotum, about 25 to 27 joints, second, third, and 

 fourth joints very short, beyond middle longer, the last joint smaller 



