106 TERTIARY INSECTS OF NORTH AMERICA. 



warmer climate formerly than the locality now enjoys. Only three species 

 of white ants, and of these only one belonging to the section with branched 

 scapular vein, have been recorded from the United States north of the Gulf 

 margin, excepting on the Pacific coast, where one or two more extend as 

 far north as San Francisco. Yet seventeen species in all are recorded from 

 North America by Hagen in 1861, and some have since been added to the 

 list; while his South American list (nearly all from Brazil) includes thirty- 

 one species, of which five are repeated from the North American list. Flor- 

 issant is situated in 39 north latitude, and Hagen says that the family 

 only rarely (tvenig), and that only in the northern hemisphere, extends be- 

 yond the fortieth degree of latitude. One species occurs as far north as 

 Manitoba. (September, 1881.) 



TabU of the genera of Termitina. 

 Scapular vein branched. 



Subraarginal vein present 1. Parotermes. 



Submarginal vein absent 2. Hodoterme*. 



Scapular vein unbranched 3. Eutermes. 



1. PAROTERMES Scudder. 



Parotermes Scudd., Proc. Amer. Acad. Arts and Sci., XIX, 135 (1883). 



Head rather large, short-oval in form, almost as broad anteriorly as 

 posteriorly, well rounded behind ; eyes small, ocelli wanting ; antennae 

 longer than the head, but shorter than the head and prothorax, slender, per- 

 haps slightly broader in the middle than at either end, composed of about 

 twenty equal joints, shorter than broad. Prothorax from a half to a third 

 as long as the head, narrower than or only as broad as it, broader in front 

 than behind, subquadrate, with the hinder angles rounded off. Wings 

 slender and straight, subequal, less than half as long again as the body, four 

 times as long as broad ; basal scale obscure in most specimens examined, 

 moderately large, as long as the prothorax, its costal margin convex ; costal 

 margin of wing straight nearly to the tip, which tapers to a well-rounded 

 point ; marginal and mediastinal veins both present, the latter distinct and 

 reaching nearly to the middle (sometimes only to the end of the basal third) 

 of the costal border ; scapular vein running parallel to the costal margin to 

 the tip of the wing and emitting from five to seven very oblique gently 

 curving superior branches at pretty regular intervals, the second arising 

 before the middle of the vein ; it also emits a couple of inferior branches 



