110 TERTIARY INSECTS OF NORTH AMERICA. 



the others, the vein commencing to branch at a considerably earlier point, 

 all the specimens agree so well in every other particular that these would 

 appear to be individual variations. It is the largest species of the genus. 

 Length of body, 11.5 mm ; breadth of thorax, 2.5 mm ; of abdomen, 3.3 mm ; 

 length of antennae, 4.25 mm ; of front wing, 13.3 mm ; breadth of same, 3.35 wra ; 

 length of middle tibia, 2 mm ; of tarsi, 1.25 mm ; of abdominal appendages, 

 0.65 mm . 



Florissant. Four specimens, Nos. 400, 7752, 9041, 14400. 



2. PAROTERMES HAGENII. 

 PL 12, Fig. 2. 



Parotermes hagenii Scudd., Proc. Amer. Acad. Arts and Sci., XIX, 139-140 (1883). 



Head roundish obovate, very regularly rounded, scarcely half as long- 

 again as broad, broadest at the eyes, which are scarcely behind the middle, 

 and are deeply set, their outer border projecting but little beyond the con- 

 tour of the head. Antennae nearly as long as head and pronotum taken 

 together, composed of about twenty-six joints, subequal beyond the base, 

 a little tapering at the tip. Pronotum more than twice as broad as long, 

 fully as broad as the head, the front margin slightly concave, the hind 

 border and sides forming a regular broad curve. Mesonotum and metano- 

 tum shaped exactly as in P. insignis, and with a similar impressed line. 

 Abdomen obovate, but with more parallel sides than in P. insignis, being 

 only a little broader than the thorax, and nearly as long as the rest of the 

 body, including the head. Abdominal appendages tolerably slender, equal, 

 bluntly pointed, composed of five or six joints, the last of which appears 

 to be two or three times as long as the others, which are equal ; the whole 

 is about half as long as the pronotum. Legs short, but longer than in P. 

 insignis, the tibiae being about as long as the width of the thorax, but they 

 are imperfectly preserved on all the specimens. 



Wings a little more than four times longer than broad, the middle of 

 the front pair scarcely reaching the extremity of the abdomen, broadest in 

 the middle, tapering almost as much apically as basally, the tip roundly 

 pointed, the costal margin pretty straight until shortly before the tip, the 

 lower margin broadly curved. The basal scale is of the same shape and 

 size as in P. insignis, but with a stronger costal curve. The scapular vein 

 and its superior branches are stout, its inferior branches and the veins below 



